{"title":"AMPLIFIER MONO - NEW","description":"\u003ch5\u003e\n\u003cmeta charset=\"utf-8\"\u003eOur Mono Automotive Audio Amplifier is specifically designed to enhance the performance of your car’s audio system by providing powerful amplification for bass and other audio elements. Ideal for subwoofers and specific audio setups, this amplifier ensures that you experience a rich and cohesive sound\u003cbr\u003e\n\u003c\/h5\u003e","products":[{"product_id":"sp-1200-1d-1-ohm","title":"SP-1200.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e1200 watt RMS.\u003cbr\u003e\u003cem\u003eat 1 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel. All the current. 1200 W RMS into 1 ohm, from a single output stage built for one job: driving subwoofers. Class D, smart temperature-controlled fan, full filter set on board.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e400\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1200\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e EASY INSTALL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING FAN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e600 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e1200 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers its full rated power into 1 ohm: no bridging, no compromise between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling, not luck\u003c\/b\u003e\n\u003cp\u003eSmart Cooling System with a fan driven by temperature: it spins when the amplifier needs it and stays quiet when it does not. Heat is managed, not hoped away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eIt accepts any source\u003c\/b\u003e\n\u003cp\u003eInput sensitivity from 200 mV, input impedance 56 kOhm. Factory low-level sources and high-output head units both drive it, and the RCA output passes the signal on to a second amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection, and it works from 9 to 16 V. It defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eSP AUDIO AMPLIFIER USER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filter settings and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-1200.1D-1OHM-Manual-EN-2026.pdf?v=1790452607\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is in the box.\u003c\/b\u003e\n\u003cp\u003eThe SP-1200.1D is sold as a single unit: the amplifier with its side mounting brackets. Installation material is not included, because it is chosen for your vehicle.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIncluded:\u003c\/b\u003e SP-1200.1D amplifier · side mounting brackets.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and ground cable, speaker cable, inline fuse holder, RCA cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e400 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e600 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 1 ohm\u003c\/td\u003e\n\u003ctd\u003e1200 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e12 V negative ground, 9 – 16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-controlled fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (±3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB @ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input and RCA output (pass-through), remote level control socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e149 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSide brackets, 4 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · CONTINUOUS RMS ONLY · PEAK OR “BURST” FIGURES ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-12cc-800-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CC — 800 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cc-1000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CC — 1000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-4-awg\"\u003e\u003csmall\u003eCABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 4 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 — 1x0GA IN \/ 3x4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePower cable and fuse sized to the current.\u003c\/b\u003e Choose the power and ground cable section for the current this amplifier draws and the length of the run, and fit an inline fuse within 20 cm of the battery, sized to the cable. Never fit a fuse larger than the cable can carry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eA clean, short chassis ground.\u003c\/b\u003e Ground to bare metal on the body: sand off paint, use a proper terminal and a bolt, and keep the ground cable as short as possible and the same section as the positive. Most noise problems are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The Smart Cooling System moves air through the amplifier: keep the grille and the vents clear, never cover it with carpet, luggage or foam, and leave a few centimetres of free space around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain with an instrument, not by ear.\u003c\/b\u003e GAIN is not a volume control: it matches the amplifier to the output of your source. Set it with the source at about three quarters of its range, raise it until the sound is clean, then stop. Clipping kills voice coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e1 ohm. At 1 ohm it delivers 1200 W RMS, at 2 ohm 600 W RMS and at 4 ohm 400 W RMS. Going below 1 ohm triggers the protection and, if repeated, damages the output stage.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow many subwoofers can it drive?\u003c\/b\u003eAs many as keep the total load at 1 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich power cable and fuse?\u003c\/b\u003eA section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I adjust the bass from the driving seat?\u003c\/b\u003eYes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eA high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the minimum impedance? — SP-1200.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"1 ohm. At 1 ohm it delivers 1200 W RMS, at 2 ohm 600 W RMS and at 4 ohm 400 W RMS. Going below 1 ohm triggers the protection and, if repeated, damages the output stage.\"}}, {\"@type\": \"Question\", \"name\": \"How many subwoofers can it drive? — SP-1200.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As many as keep the total load at 1 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\"}}, {\"@type\": \"Question\", \"name\": \"Which power cable and fuse? — SP-1200.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\"}}, {\"@type\": \"Question\", \"name\": \"Can I adjust the bass from the driving seat? — SP-1200.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have? — SP-1200.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858357305687,"sku":"40000","price":265.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_8aa2e371-251b-49b5-b855-9afa3f7b7804.webp?v=1771937902"},{"product_id":"sp-1200-1d-2-ohm","title":"SP-1200.1D - @2 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e1200 watt RMS.\u003cbr\u003e\u003cem\u003eat 2 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel. All the current. 1200 W RMS into 2 ohm, from a single output stage built for one job: driving subwoofers. Class D, smart temperature-controlled fan, full filter set on board.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e400\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 8 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1200\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e EASY INSTALL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING FAN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e600 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e1200 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 2 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers its full rated power into 2 ohm: no bridging, no compromise between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling, not luck\u003c\/b\u003e\n\u003cp\u003eSmart Cooling System with a fan driven by temperature: it spins when the amplifier needs it and stays quiet when it does not. Heat is managed, not hoped away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eIt accepts any source\u003c\/b\u003e\n\u003cp\u003eInput sensitivity from 200 mV, input impedance 56 kOhm. Factory low-level sources and high-output head units both drive it, and the RCA output passes the signal on to a second amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection, and it works from 9 to 16 V. It defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eSP AUDIO AMPLIFIER USER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filter settings and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-1200.1D-2OHM-Manual-EN-2026.pdf?v=1790452607\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is in the box.\u003c\/b\u003e\n\u003cp\u003eThe SP-1200.1D is sold as a single unit: the amplifier with its side mounting brackets. Installation material is not included, because it is chosen for your vehicle.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIncluded:\u003c\/b\u003e SP-1200.1D amplifier · side mounting brackets.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and ground cable, speaker cable, inline fuse holder, RCA cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 8 ohm\u003c\/td\u003e\n\u003ctd\u003e400 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e600 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e1200 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e12 V negative ground, 9 – 16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-controlled fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (±3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB @ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input and RCA output (pass-through), remote level control socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e149 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSide brackets, 4 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · CONTINUOUS RMS ONLY · PEAK OR “BURST” FIGURES ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-12cc-800-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CC — 800 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cc-1000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CC — 1000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-4-awg\"\u003e\u003csmall\u003eCABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 4 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 — 1x0GA IN \/ 3x4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePower cable and fuse sized to the current.\u003c\/b\u003e Choose the power and ground cable section for the current this amplifier draws and the length of the run, and fit an inline fuse within 20 cm of the battery, sized to the cable. Never fit a fuse larger than the cable can carry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eA clean, short chassis ground.\u003c\/b\u003e Ground to bare metal on the body: sand off paint, use a proper terminal and a bolt, and keep the ground cable as short as possible and the same section as the positive. Most noise problems are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The Smart Cooling System moves air through the amplifier: keep the grille and the vents clear, never cover it with carpet, luggage or foam, and leave a few centimetres of free space around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain with an instrument, not by ear.\u003c\/b\u003e GAIN is not a volume control: it matches the amplifier to the output of your source. Set it with the source at about three quarters of its range, raise it until the sound is clean, then stop. Clipping kills voice coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e2 ohm. At 2 ohm it delivers 1200 W RMS, at 4 ohm 600 W RMS and at 8 ohm 400 W RMS. Going below 2 ohm triggers the protection and, if repeated, damages the output stage.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow many subwoofers can it drive?\u003c\/b\u003eAs many as keep the total load at 2 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich power cable and fuse?\u003c\/b\u003eA section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I adjust the bass from the driving seat?\u003c\/b\u003eYes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eA high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the minimum impedance? — SP-1200.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"2 ohm. At 2 ohm it delivers 1200 W RMS, at 4 ohm 600 W RMS and at 8 ohm 400 W RMS. Going below 2 ohm triggers the protection and, if repeated, damages the output stage.\"}}, {\"@type\": \"Question\", \"name\": \"How many subwoofers can it drive? — SP-1200.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As many as keep the total load at 2 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\"}}, {\"@type\": \"Question\", \"name\": \"Which power cable and fuse? — SP-1200.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\"}}, {\"@type\": \"Question\", \"name\": \"Can I adjust the bass from the driving seat? — SP-1200.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have? — SP-1200.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858360648023,"sku":"40001","price":255.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/2_a1340f0d-f6b3-44b1-8c5b-b7368273d592.webp?v=1771937670"},{"product_id":"copy-of-sp-1800-1d-2-ohm","title":"SP-2500.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e2500 watt RMS.\u003cbr\u003e\u003cem\u003eat 1 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel. All the current. 2500 W RMS into 1 ohm, from a single output stage built for one job: driving subwoofers. Class D, smart temperature-controlled fan, full filter set on board.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e800\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e2500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e EASY INSTALL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING FAN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 52%;\"\u003e1300 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e2500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers its full rated power into 1 ohm: no bridging, no compromise between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling, not luck\u003c\/b\u003e\n\u003cp\u003eSmart Cooling System with a fan driven by temperature: it spins when the amplifier needs it and stays quiet when it does not. Heat is managed, not hoped away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eIt accepts any source\u003c\/b\u003e\n\u003cp\u003eInput sensitivity from 200 mV, input impedance 56 kOhm. Factory low-level sources and high-output head units both drive it, and the RCA output passes the signal on to a second amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection, and it works from 9 to 16 V. It defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eSP AUDIO AMPLIFIER USER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filter settings and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-2500.1D-1OHM-Manual-EN-2026.pdf?v=1790452607\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is in the box.\u003c\/b\u003e\n\u003cp\u003eThe SP-2500.1D is sold as a single unit: the amplifier with its side mounting brackets. Installation material is not included, because it is chosen for your vehicle.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIncluded:\u003c\/b\u003e SP-2500.1D amplifier · side mounting brackets.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and ground cable, speaker cable, inline fuse holder, RCA cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e800 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e1300 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 1 ohm\u003c\/td\u003e\n\u003ctd\u003e2500 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e12 V negative ground, 9 – 16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-controlled fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (±3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB @ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input and RCA output (pass-through), remote level control socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e207 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSide brackets, 4 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · CONTINUOUS RMS ONLY · PEAK OR “BURST” FIGURES ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-12cx-2500-watt-rms-power\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CX — 2500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cx-3000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CX — 3000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eCABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 — 1x0GA IN \/ 3x4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePower cable and fuse sized to the current.\u003c\/b\u003e Choose the power and ground cable section for the current this amplifier draws and the length of the run, and fit an inline fuse within 20 cm of the battery, sized to the cable. Never fit a fuse larger than the cable can carry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eA clean, short chassis ground.\u003c\/b\u003e Ground to bare metal on the body: sand off paint, use a proper terminal and a bolt, and keep the ground cable as short as possible and the same section as the positive. Most noise problems are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The Smart Cooling System moves air through the amplifier: keep the grille and the vents clear, never cover it with carpet, luggage or foam, and leave a few centimetres of free space around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain with an instrument, not by ear.\u003c\/b\u003e GAIN is not a volume control: it matches the amplifier to the output of your source. Set it with the source at about three quarters of its range, raise it until the sound is clean, then stop. Clipping kills voice coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e1 ohm. At 1 ohm it delivers 2500 W RMS, at 2 ohm 1300 W RMS and at 4 ohm 800 W RMS. Going below 1 ohm triggers the protection and, if repeated, damages the output stage.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow many subwoofers can it drive?\u003c\/b\u003eAs many as keep the total load at 1 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich power cable and fuse?\u003c\/b\u003eA section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I adjust the bass from the driving seat?\u003c\/b\u003eYes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eA high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the minimum impedance? — SP-2500.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"1 ohm. At 1 ohm it delivers 2500 W RMS, at 2 ohm 1300 W RMS and at 4 ohm 800 W RMS. Going below 1 ohm triggers the protection and, if repeated, damages the output stage.\"}}, {\"@type\": \"Question\", \"name\": \"How many subwoofers can it drive? — SP-2500.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As many as keep the total load at 1 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\"}}, {\"@type\": \"Question\", \"name\": \"Which power cable and fuse? — SP-2500.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\"}}, {\"@type\": \"Question\", \"name\": \"Can I adjust the bass from the driving seat? — SP-2500.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have? — SP-2500.1D @1 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858368479575,"sku":"40004","price":379.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_7e81437e-3d34-4868-9080-2a35ce5c8671.webp?v=1771937851"},{"product_id":"copy-of-sp-2500-1d-1-ohm","title":"SP-2500.1D - @2 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e2500 watt RMS.\u003cbr\u003e\u003cem\u003eat 2 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel. All the current. 2500 W RMS into 2 ohm, from a single output stage built for one job: driving subwoofers. Class D, smart temperature-controlled fan, full filter set on board.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e800\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 8 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e2500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e EASY INSTALL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING FAN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 52%;\"\u003e1300 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e2500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 2 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers its full rated power into 2 ohm: no bridging, no compromise between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling, not luck\u003c\/b\u003e\n\u003cp\u003eSmart Cooling System with a fan driven by temperature: it spins when the amplifier needs it and stays quiet when it does not. Heat is managed, not hoped away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eIt accepts any source\u003c\/b\u003e\n\u003cp\u003eInput sensitivity from 200 mV, input impedance 56 kOhm. Factory low-level sources and high-output head units both drive it, and the RCA output passes the signal on to a second amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection, and it works from 9 to 16 V. It defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eSP AUDIO AMPLIFIER USER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filter settings and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-2500.1D-2OHM-Manual-EN-2026.pdf?v=1790452652\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is in the box.\u003c\/b\u003e\n\u003cp\u003eThe SP-2500.1D is sold as a single unit: the amplifier with its side mounting brackets. Installation material is not included, because it is chosen for your vehicle.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIncluded:\u003c\/b\u003e SP-2500.1D amplifier · side mounting brackets.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and ground cable, speaker cable, inline fuse holder, RCA cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 8 ohm\u003c\/td\u003e\n\u003ctd\u003e800 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e1300 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e2500 W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e12 V negative ground, 9 – 16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-controlled fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (±3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB @ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input and RCA output (pass-through), remote level control socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e207 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSide brackets, 4 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · CONTINUOUS RMS ONLY · PEAK OR “BURST” FIGURES ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-12cx-2500-watt-rms-power\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CX — 2500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cx-3000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CX — 3000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eCABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 — 1x0GA IN \/ 3x4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePower cable and fuse sized to the current.\u003c\/b\u003e Choose the power and ground cable section for the current this amplifier draws and the length of the run, and fit an inline fuse within 20 cm of the battery, sized to the cable. Never fit a fuse larger than the cable can carry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eA clean, short chassis ground.\u003c\/b\u003e Ground to bare metal on the body: sand off paint, use a proper terminal and a bolt, and keep the ground cable as short as possible and the same section as the positive. Most noise problems are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The Smart Cooling System moves air through the amplifier: keep the grille and the vents clear, never cover it with carpet, luggage or foam, and leave a few centimetres of free space around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain with an instrument, not by ear.\u003c\/b\u003e GAIN is not a volume control: it matches the amplifier to the output of your source. Set it with the source at about three quarters of its range, raise it until the sound is clean, then stop. Clipping kills voice coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e2 ohm. At 2 ohm it delivers 2500 W RMS, at 4 ohm 1300 W RMS and at 8 ohm 800 W RMS. Going below 2 ohm triggers the protection and, if repeated, damages the output stage.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow many subwoofers can it drive?\u003c\/b\u003eAs many as keep the total load at 2 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich power cable and fuse?\u003c\/b\u003eA section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I adjust the bass from the driving seat?\u003c\/b\u003eYes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eA high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the minimum impedance? — SP-2500.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"2 ohm. At 2 ohm it delivers 2500 W RMS, at 4 ohm 1300 W RMS and at 8 ohm 800 W RMS. Going below 2 ohm triggers the protection and, if repeated, damages the output stage.\"}}, {\"@type\": \"Question\", \"name\": \"How many subwoofers can it drive? — SP-2500.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As many as keep the total load at 2 ohm or above. Work out the wiring of the voice coils first, then check the total the amplifier sees.\"}}, {\"@type\": \"Question\", \"name\": \"Which power cable and fuse? — SP-2500.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A section chosen for the current and the length of the run, with an inline fuse within 20 cm of the battery sized to that cable, and a ground on bare metal. The manual has the wiring diagrams.\"}}, {\"@type\": \"Question\", \"name\": \"Can I adjust the bass from the driving seat? — SP-2500.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: there is a socket on the panel for the remote level control, next to the BASS BOOST, GAIN and crossover controls.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have? — SP-2500.1D @2 ohm\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and bass boost from 0 to 12 dB at 50 Hz, all variable on the panel.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858371690839,"sku":"40005","price":365.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_f39d881b-4386-4f30-9501-98c8031ab719.webp?v=1771937698"},{"product_id":"copy-of-sp-2500-1d-2-ohm","title":"SP-3500.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e3500 watt RMS.\u003cbr\u003e\u003cem\u003einto 1 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel, one subwoofer, all the current the car can give. Class D monoblock with forced cooling, variable filters and full protection — built for systems where the limiting factor is no longer the amplifier, but the electrical system behind it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e3500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1800\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FORCED COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FULL PROTECTION\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 29%;\"\u003e1000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 51%;\"\u003e1800 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e3500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eAll the current on one channel\u003c\/b\u003e\n\u003cp\u003eA single class D output stage delivers 3500 W RMS into 1 ohm: no bridging, no power split between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eForced cooling, not just fins\u003c\/b\u003e\n\u003cp\u003eSmart cooling system with a temperature-driven fan on top of the finned chassis. The fan only spins when the amplifier asks for it, and the output stage keeps working when the music does not stop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eFilters and levels on board\u003c\/b\u003e\n\u003cp\u003eVariable low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz, bass boost 0 – 12 dB at 50 Hz and gain, all on the panel. An RCA output passes the signal on to a second amplifier and a port takes the remote level control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eProtection against output short circuit, high supply voltage, low supply voltage and overheating. It works from 9 V to 16 V, so a starting dip does not become a repair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filters and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-3500.1D-1OHM-Manual-EN-2026.pdf?v=1790452652\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAmplifier first, installation material second.\u003c\/b\u003e\n\u003cp\u003eThe SP-3500.1D arrives ready to be mounted: chassis with four fixing feet, direct-insert screw terminals and the complete control panel. Everything that goes around it — cable, fuse, ground, distribution — is chosen on the car, not on the amplifier.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e amplifier · user manual (PDF above) · protective packaging.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder, RCA cable, distribution block and remote level control — installation material, chosen for your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 1 ohm\u003c\/td\u003e\n\u003ctd\u003e3500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e1800 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e1000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V – 16 V (12 V negative ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input terminals\u003c\/td\u003e\n\u003ctd\u003e1 × GND \/ REM \/ +12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high voltage, low voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB at 50 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input · RCA output · remote level control port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e228 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-0ga-red-100-ofc-30m-spool\"\u003e\u003csmall\u003ePOWER CABLE 30 M SPOOL\u003c\/small\u003e\u003cstrong\u003eSP 0GA RED 100% OFC\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 · 1×0GA IN, 3×4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCable section and fuse come first.\u003c\/b\u003e On an amplifier of this class the run from the battery is normally 0 AWG, with a main fuse within 20 cm of the battery sized to the cable. An undersized cable is the most common cause of voltage drop and disappointing bass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGround on clean metal, short.\u003c\/b\u003e Scrape the paint off, use the same section as the positive and keep the ground lead as short as you can. Most “noise problems” are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave the fan and the fins free.\u003c\/b\u003e The amplifier cools itself with a temperature-driven fan and a finned chassis: never cover it with carpet, luggage or foam, and leave air around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain last, and set it as a match, not a volume.\u003c\/b\u003e Bass boost at 0, source at about three quarters, then raise the gain until it is loud and clean, and stop there. The supply must stay between 9 V and 16 V while it plays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer impedance should I use?\u003c\/b\u003eAny load down to 1 ohm: 1 ohm = 3500 W RMS · 2 ohm = 1800 W RMS · 4 ohm = 1000 W RMS. Below 1 ohm the protection steps in and, if it is repeated, the output stage is damaged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDo I need to upgrade the battery and the alternator?\u003c\/b\u003eThe data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eLow-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I connect a second amplifier to it?\u003c\/b\u003eYes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat are the dimensions?\u003c\/b\u003e228 × 219 × 74 mm, with four fixing feet. The power input is a single GND \/ REM \/ +12 V terminal block.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which subwoofer impedance should I use — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Any load down to 1 ohm: 1 ohm = 3500 W RMS · 2 ohm = 1800 W RMS · 4 ohm = 1000 W RMS. Below 1 ohm the protection steps in and, if it is repeated, the output stage is damaged.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to upgrade the battery and the alternator — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\"}}, {\"@type\": \"Question\", \"name\": \"Can I connect a second amplifier to it — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\"}}, {\"@type\": \"Question\", \"name\": \"What are the dimensions — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"228 × 219 × 74 mm, with four fixing feet. The power input is a single GND \/ REM \/ +12 V terminal block.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858373951831,"sku":"40006","price":399.66,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_a434a2a1-3b50-4090-a8b1-b2bdf1df3ea8.webp?v=1771937823"},{"product_id":"copy-of-sp-3500-1d-1-ohm","title":"SP-3500.1D - @2 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e3500 watt RMS.\u003cbr\u003e\u003cem\u003einto 2 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel, one subwoofer, all the current the car can give. Class D monoblock with forced cooling, variable filters and full protection — built for systems where the limiting factor is no longer the amplifier, but the electrical system behind it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e3500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1800\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 8 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FORCED COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FULL PROTECTION\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 8 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 29%;\"\u003e1000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 51%;\"\u003e1800 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e3500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 2 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eAll the current on one channel\u003c\/b\u003e\n\u003cp\u003eA single class D output stage delivers 3500 W RMS into 2 ohm: no bridging, no power split between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eForced cooling, not just fins\u003c\/b\u003e\n\u003cp\u003eSmart cooling system with a temperature-driven fan on top of the finned chassis. The fan only spins when the amplifier asks for it, and the output stage keeps working when the music does not stop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eFilters and levels on board\u003c\/b\u003e\n\u003cp\u003eVariable low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz, bass boost 0 – 12 dB at 50 Hz and gain, all on the panel. An RCA output passes the signal on to a second amplifier and a port takes the remote level control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eProtection against output short circuit, high supply voltage, low supply voltage and overheating. It works from 9 V to 16 V, so a starting dip does not become a repair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filters and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-3500.1D-2OHM-Manual-EN-2026.pdf?v=1790452652\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAmplifier first, installation material second.\u003c\/b\u003e\n\u003cp\u003eThe SP-3500.1D arrives ready to be mounted: chassis with four fixing feet, direct-insert screw terminals and the complete control panel. Everything that goes around it — cable, fuse, ground, distribution — is chosen on the car, not on the amplifier.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e amplifier · user manual (PDF above) · protective packaging.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder, RCA cable, distribution block and remote level control — installation material, chosen for your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e3500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e1800 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 8 ohm\u003c\/td\u003e\n\u003ctd\u003e1000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V – 16 V (12 V negative ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input terminals\u003c\/td\u003e\n\u003ctd\u003e1 × GND \/ REM \/ +12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high voltage, low voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB at 50 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input · RCA output · remote level control port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e228 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-0ga-red-100-ofc-30m-spool\"\u003e\u003csmall\u003ePOWER CABLE 30 M SPOOL\u003c\/small\u003e\u003cstrong\u003eSP 0GA RED 100% OFC\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 · 1×0GA IN, 3×4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCable section and fuse come first.\u003c\/b\u003e On an amplifier of this class the run from the battery is normally 0 AWG, with a main fuse within 20 cm of the battery sized to the cable. An undersized cable is the most common cause of voltage drop and disappointing bass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGround on clean metal, short.\u003c\/b\u003e Scrape the paint off, use the same section as the positive and keep the ground lead as short as you can. Most “noise problems” are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave the fan and the fins free.\u003c\/b\u003e The amplifier cools itself with a temperature-driven fan and a finned chassis: never cover it with carpet, luggage or foam, and leave air around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain last, and set it as a match, not a volume.\u003c\/b\u003e Bass boost at 0, source at about three quarters, then raise the gain until it is loud and clean, and stop there. The supply must stay between 9 V and 16 V while it plays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer impedance should I use?\u003c\/b\u003eAny load down to 2 ohm: 2 ohm = 3500 W RMS · 4 ohm = 1800 W RMS · 8 ohm = 1000 W RMS. Below 2 ohm the protection steps in and, if it is repeated, the output stage is damaged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDo I need to upgrade the battery and the alternator?\u003c\/b\u003eThe data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eLow-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I connect a second amplifier to it?\u003c\/b\u003eYes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat are the dimensions?\u003c\/b\u003e228 × 219 × 74 mm, with four fixing feet. The power input is a single GND \/ REM \/ +12 V terminal block.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which subwoofer impedance should I use — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Any load down to 2 ohm: 2 ohm = 3500 W RMS · 4 ohm = 1800 W RMS · 8 ohm = 1000 W RMS. Below 2 ohm the protection steps in and, if it is repeated, the output stage is damaged.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to upgrade the battery and the alternator — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\"}}, {\"@type\": \"Question\", \"name\": \"Can I connect a second amplifier to it — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\"}}, {\"@type\": \"Question\", \"name\": \"What are the dimensions — SP-3500.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"228 × 219 × 74 mm, with four fixing feet. The power input is a single GND \/ REM \/ +12 V terminal block.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858375819607,"sku":"40007","price":419.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_299207b7-dbab-4153-bc75-f7b35daeedfb.webp?v=1771938061"},{"product_id":"copy-of-sp-3500-1d-2-ohm","title":"SP-6000.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e6000 watt RMS.\u003cbr\u003e\u003cem\u003einto 1 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel, one subwoofer, all the current the car can give. Class D monoblock with forced cooling, variable filters and full protection — built for systems where the limiting factor is no longer the amplifier, but the electrical system behind it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e6000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e3000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FORCED COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FULL PROTECTION\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 27%;\"\u003e1600 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e3000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e6000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eAll the current on one channel\u003c\/b\u003e\n\u003cp\u003eA single class D output stage delivers 6000 W RMS into 1 ohm: no bridging, no power split between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eForced cooling, not just fins\u003c\/b\u003e\n\u003cp\u003eSmart cooling system with a temperature-driven fan on top of the finned chassis. The fan only spins when the amplifier asks for it, and the output stage keeps working when the music does not stop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eTwo power input blocks\u003c\/b\u003e\n\u003cp\u003eThe power panel carries two GND \/ REM \/ +12 V terminal blocks, one on each side, so the current arrives on two runs instead of one and the connection stays cool under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eProtection against output short circuit, high supply voltage, low supply voltage and overheating. It works from 9 V to 16 V, so a starting dip does not become a repair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filters and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-6000.1D-1OHM-Manual-EN-2026.pdf?v=1790452652\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAmplifier first, installation material second.\u003c\/b\u003e\n\u003cp\u003eThe SP-6000.1D arrives ready to be mounted: chassis with four fixing feet, direct-insert screw terminals and the complete control panel. Everything that goes around it — cable, fuse, ground, distribution — is chosen on the car, not on the amplifier.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e amplifier · user manual (PDF above) · protective packaging.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder, RCA cable, distribution block and remote level control — installation material, chosen for your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 1 ohm\u003c\/td\u003e\n\u003ctd\u003e6000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e3000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e1600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V – 16 V (12 V negative ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input terminals\u003c\/td\u003e\n\u003ctd\u003e2 × GND \/ REM \/ +12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high voltage, low voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB at 50 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input · RCA output · remote level control port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e307 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15x-carbon-fiber-6000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15X CARBON — 6000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-0ga-red-100-ofc-30m-spool\"\u003e\u003csmall\u003ePOWER CABLE 30 M SPOOL\u003c\/small\u003e\u003cstrong\u003eSP 0GA RED 100% OFC\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 · 1×0GA IN, 3×4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCable section and fuse come first.\u003c\/b\u003e On an amplifier of this class the run from the battery is normally 0 AWG, with a main fuse within 20 cm of the battery sized to the cable. An undersized cable is the most common cause of voltage drop and disappointing bass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGround on clean metal, short.\u003c\/b\u003e Scrape the paint off, use the same section as the positive and keep the ground lead as short as you can. Most “noise problems” are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave the fan and the fins free.\u003c\/b\u003e The amplifier cools itself with a temperature-driven fan and a finned chassis: never cover it with carpet, luggage or foam, and leave air around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain last, and set it as a match, not a volume.\u003c\/b\u003e Bass boost at 0, source at about three quarters, then raise the gain until it is loud and clean, and stop there. The supply must stay between 9 V and 16 V while it plays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer impedance should I use?\u003c\/b\u003eAny load down to 1 ohm: 1 ohm = 6000 W RMS · 2 ohm = 3000 W RMS · 4 ohm = 1600 W RMS. Below 1 ohm the protection steps in and, if it is repeated, the output stage is damaged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDo I need to upgrade the battery and the alternator?\u003c\/b\u003eThe data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eLow-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I connect a second amplifier to it?\u003c\/b\u003eYes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat are the dimensions?\u003c\/b\u003e307 × 219 × 74 mm, with four fixing feet. It has two GND \/ REM \/ +12 V terminal blocks, one on each side of the power input panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which subwoofer impedance should I use — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Any load down to 1 ohm: 1 ohm = 6000 W RMS · 2 ohm = 3000 W RMS · 4 ohm = 1600 W RMS. Below 1 ohm the protection steps in and, if it is repeated, the output stage is damaged.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to upgrade the battery and the alternator — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\"}}, {\"@type\": \"Question\", \"name\": \"Can I connect a second amplifier to it — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\"}}, {\"@type\": \"Question\", \"name\": \"What are the dimensions — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"307 × 219 × 74 mm, with four fixing feet. It has two GND \/ REM \/ +12 V terminal blocks, one on each side of the power input panel.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858380210519,"sku":"40008","price":715.01,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_0cc7b3dd-42e8-40ee-bf46-fbfadfc83e64.webp?v=1771937792"},{"product_id":"copy-of-sp-6000-1d-1-ohm","title":"SP-6000.1D - @2 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · monoblock\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e6000 watt RMS.\u003cbr\u003e\u003cem\u003einto 2 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel, one subwoofer, all the current the car can give. Class D monoblock with forced cooling, variable filters and full protection — built for systems where the limiting factor is no longer the amplifier, but the electrical system behind it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e6000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e3000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 8 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CLASS D MONOBLOCK\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FORCED COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FULL PROTECTION\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 8 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 27%;\"\u003e1600 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e3000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e6000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 2 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eAll the current on one channel\u003c\/b\u003e\n\u003cp\u003eA single class D output stage delivers 6000 W RMS into 2 ohm: no bridging, no power split between two channels. Everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eForced cooling, not just fins\u003c\/b\u003e\n\u003cp\u003eSmart cooling system with a temperature-driven fan on top of the finned chassis. The fan only spins when the amplifier asks for it, and the output stage keeps working when the music does not stop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eTwo power input blocks\u003c\/b\u003e\n\u003cp\u003eThe power panel carries two GND \/ REM \/ +12 V terminal blocks, one on each side, so the current arrives on two runs instead of one and the connection stays cool under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eProtection against output short circuit, high supply voltage, low supply voltage and overheating. It works from 9 V to 16 V, so a starting dip does not become a repair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL · PDF\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, filters and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-6000.1D-2OHM-Manual-EN-2026.pdf?v=1790452652\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩  Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAmplifier first, installation material second.\u003c\/b\u003e\n\u003cp\u003eThe SP-6000.1D arrives ready to be mounted: chassis with four fixing feet, direct-insert screw terminals and the complete control panel. Everything that goes around it — cable, fuse, ground, distribution — is chosen on the car, not on the amplifier.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e amplifier · user manual (PDF above) · protective packaging.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder, RCA cable, distribution block and remote level control — installation material, chosen for your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e6000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e3000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 8 ohm\u003c\/td\u003e\n\u003ctd\u003e1600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V – 16 V (12 V negative ground)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower input terminals\u003c\/td\u003e\n\u003ctd\u003e2 × GND \/ REM \/ +12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high voltage, low voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB at 50 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003eRCA input · RCA output · remote level control port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e307 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15x-carbon-fiber-6000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15X CARBON — 6000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-0ga-red-100-ofc-30m-spool\"\u003e\u003csmall\u003ePOWER CABLE 30 M SPOOL\u003c\/small\u003e\u003cstrong\u003eSP 0GA RED 100% OFC\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION\u003c\/small\u003e\u003cstrong\u003eSP DB 01 · 1×0GA IN, 3×4GA OUT\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCable section and fuse come first.\u003c\/b\u003e On an amplifier of this class the run from the battery is normally 0 AWG, with a main fuse within 20 cm of the battery sized to the cable. An undersized cable is the most common cause of voltage drop and disappointing bass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGround on clean metal, short.\u003c\/b\u003e Scrape the paint off, use the same section as the positive and keep the ground lead as short as you can. Most “noise problems” are ground problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave the fan and the fins free.\u003c\/b\u003e The amplifier cools itself with a temperature-driven fan and a finned chassis: never cover it with carpet, luggage or foam, and leave air around it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain last, and set it as a match, not a volume.\u003c\/b\u003e Bass boost at 0, source at about three quarters, then raise the gain until it is loud and clean, and stop there. The supply must stay between 9 V and 16 V while it plays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer impedance should I use?\u003c\/b\u003eAny load down to 2 ohm: 2 ohm = 6000 W RMS · 4 ohm = 3000 W RMS · 8 ohm = 1600 W RMS. Below 2 ohm the protection steps in and, if it is repeated, the output stage is damaged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDo I need to upgrade the battery and the alternator?\u003c\/b\u003eThe data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eLow-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I connect a second amplifier to it?\u003c\/b\u003eYes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat are the dimensions?\u003c\/b\u003e307 × 219 × 74 mm, with four fixing feet. It has two GND \/ REM \/ +12 V terminal blocks, one on each side of the power input panel.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which subwoofer impedance should I use — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Any load down to 2 ohm: 2 ohm = 6000 W RMS · 4 ohm = 3000 W RMS · 8 ohm = 1600 W RMS. Below 2 ohm the protection steps in and, if it is repeated, the output stage is damaged.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to upgrade the battery and the alternator — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The data sheet gives the supply range (9 V – 16 V), not the current draw. On this power class, plan the electrical system first: cable section, main fuse, a clean ground and a battery and alternator that keep the voltage up while the amplifier plays.\"}}, {\"@type\": \"Question\", \"name\": \"Which filters does it have — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Low-pass 80 Hz – 10 kHz, high-pass 15 Hz – 80 Hz and bass boost 0 – 12 dB centred on 50 Hz, all variable on the panel, plus the gain.\"}}, {\"@type\": \"Question\", \"name\": \"Can I connect a second amplifier to it — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes: the panel has an RCA output next to the RCA input, so the signal can be passed on to another amplifier without a splitter.\"}}, {\"@type\": \"Question\", \"name\": \"What are the dimensions — SP-6000.1D\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"307 × 219 × 74 mm, with four fixing feet. It has two GND \/ REM \/ +12 V terminal blocks, one on each side of the power input panel.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858381586775,"sku":"40009","price":720.43,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_91ab42e8-f623-44d8-b19a-a11b87d8f4de.webp?v=1771938032"},{"product_id":"copy-of-sp-6000-1d-2-ohm","title":"SP-9000.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · competition mono\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e9000 watt RMS.\u003cbr\u003e\u003cem\u003eAt 1 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel, built for the loads that competition subwoofers present. The SP-9000.1D @1 ohm delivers its full rated power down to 1 ohm — and asks for an electrical system built to feed it: battery, alternator, cable section and fuses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e2300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e4500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e9000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CONTINUOUS RMS ONLY\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FULL PROTECTION SET\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 26%;\"\u003e2300 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e4500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e9000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω · THIS IS THE @1 OHM VERSION\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers 9000 W RMS into 1 ohm. No bridging, no two channels sharing a power supply: everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eBuilt around the electrical system\u003c\/b\u003e\n\u003cp\u003ePower like this is won or lost at the battery. Big battery, a strong alternator, generous cable section and correctly sized fuses are part of the amplifier, not accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling\u003c\/b\u003e\n\u003cp\u003eTemperature-driven fan and a thermal management system that ramps airflow only when it is needed — quiet on the street, ready when the level goes up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high and low supply voltage and thermal protection. It works between 9 V and 16 V and defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eSP-9000.1D @1 OHM · USER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eThe official SP-9000.1D user manual: wiring, loads and impedance, filters and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-9000.1D-1ohm-Manual-EN-2026.pdf?v=1790452596\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eThe amplifier, ready to wire.\u003c\/b\u003e\n\u003cp\u003eThe SP-9000.1D @1 ohm is sold as a single unit, packed for transport. What decides the result is what you put around it: battery, alternator, cable section, fuses and the subwoofer load.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e amplifier · mounting hardware.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cable — installation materials, chosen for your vehicle and your system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e1 × 2300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e1 × 4500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 1 ohm\u003c\/td\u003e\n\u003ctd\u003e1 × 9000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum supply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum supply voltage\u003c\/td\u003e\n\u003ctd\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB (50 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e392 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-12cxx-2800-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CXXX — 2800 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-afs-01-fuseholder-mini-anl-1x4ga-8ga-in-1x4-8-ga-out\"\u003e\u003csmall\u003eLINE PROTECTION\u003c\/small\u003e\u003cstrong\u003eSP AFS4 fuse holder\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBuild the electrical system first.\u003c\/b\u003e A healthy battery, a strong alternator and a generous cable section are what let this amplifier reach its rated power. Weak wiring means low voltage, and low voltage means protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInline main fuse within 20 cm of the battery\u003c\/b\u003e, sized to the cable, plus a ground point on bare metal. Use 0 AWG for the battery run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRespect the minimum load: 1 ohm.\u003c\/b\u003e A lower impedance triggers the protection and, if repeated, damages the output stage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eKeep the supply between 9 V and 16 V\u003c\/b\u003e, 12 V negative ground, and leave air around the amplifier so the fan can work. Professional installation is recommended: damage caused by improper installation is not covered by warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the difference from the @2 ohm version?\u003c\/b\u003eThis is the @1 ohm version: it reaches its full 9000 W RMS at 1 ohm. The @2 ohm version is a different product, rated for a different load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer load should I use?\u003c\/b\u003eAny load down to 1 ohm. At 1 ohm you get 9000 W RMS, at 2 ohm 4500 W and at 4 ohm 2300 W.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich cable and fuse?\u003c\/b\u003e0 AWG power and ground for the battery run, an inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDo I need a second battery or a bigger alternator?\u003c\/b\u003eAt this power level, yes in most cars. If the voltage drops below 9 V the amplifier protects itself and the level falls.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat are its dimensions?\u003c\/b\u003e392 × 219 × 74 mm. Plan the space with the fan free to move air.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the difference between the SP-9000.1D @1 ohm and the @2 ohm version?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This is the @1 ohm version: it reaches its full 9000 W RMS at 1 ohm, 4500 W at 2 ohm and 2300 W at 4 ohm. The @2 ohm version is a different product, rated for a different load.\"}},{\"@type\":\"Question\",\"name\":\"Which subwoofer load should I use with the SP-9000.1D @1 ohm?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Any load down to 1 ohm. At 1 ohm you get 9000 W RMS, at 2 ohm 4500 W and at 4 ohm 2300 W.\"}},{\"@type\":\"Question\",\"name\":\"Which power cable and fuse does the SP-9000.1D need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"0 AWG power and ground cable for the battery run, an inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal.\"}},{\"@type\":\"Question\",\"name\":\"Do I need a second battery or a bigger alternator for the SP-9000.1D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"At this power level, yes in most cars. The amplifier works between 9 V and 16 V: if the voltage drops below 9 V it protects itself and the level falls.\"}},{\"@type\":\"Question\",\"name\":\"What are the dimensions of the SP-9000.1D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"392 x 219 x 74 mm. Plan the space with the fan free to move air.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858382373207,"sku":"40010","price":879.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_0f6ad6a0-9f72-4e0c-9523-ac71c007edb5.webp?v=1771937765"},{"product_id":"copy-of-sp-9000-1d-1-ohm","title":"SP-9000.1D - @2 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · competition mono\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e9000 watt RMS.\u003cbr\u003e\u003cem\u003eAt 2 ohm.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eThe @2 ohm version of the SP-9000.1D: full rated power on a 2 ohm load, for systems built around dual voice-coil subwoofers wired to 2 ohm. Power like this is won at the battery — alternator, cable section and fuses are part of the project.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e2300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 8 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e4500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e9000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e CONTINUOUS RMS ONLY\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FULL PROTECTION SET\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 8 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 26%;\"\u003e2300 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e4500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e9000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 2 Ω · THIS IS THE @2 OHM VERSION\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers 9000 W RMS into 2 ohm. No bridging, no two channels sharing a power supply: everything goes to the subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eBuilt around the electrical system\u003c\/b\u003e\n\u003cp\u003eBig battery, a strong alternator, generous cable section and correctly sized fuses are part of the amplifier, not accessories. Weak wiring means low voltage, and low voltage means protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling\u003c\/b\u003e\n\u003cp\u003eTemperature-driven fan and a thermal management system that ramps airflow only when it is needed — quiet on the street, ready when the level goes up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high and low supply voltage and thermal protection. It works between 9 V and 16 V and defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eSP-9000.1D @2 OHM · USER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eThe official SP-9000.1D user manual: wiring, loads and impedance, filters and gain calibration.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-9000.1D-2ohm-Manual-EN-2026.pdf?v=1790452596\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eThe amplifier, ready to wire.\u003c\/b\u003e\n\u003cp\u003eThe SP-9000.1D @2 ohm is sold as a single unit, packed for transport. What decides the result is what you put around it: battery, alternator, cable section, fuses and the subwoofer load.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e amplifier · mounting hardware.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cable — installation materials, chosen for your vehicle and your system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 8 ohm\u003c\/td\u003e\n\u003ctd\u003e1 × 2300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e1 × 4500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e1 × 9000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum supply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum supply voltage\u003c\/td\u003e\n\u003ctd\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB (50 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e392 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-12cxx-2800-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CXXX — 2800 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-0-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 0 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-afs-01-fuseholder-mini-anl-1x4ga-8ga-in-1x4-8-ga-out\"\u003e\u003csmall\u003eLINE PROTECTION\u003c\/small\u003e\u003cstrong\u003eSP AFS4 fuse holder\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBuild the electrical system first.\u003c\/b\u003e A healthy battery, a strong alternator and a generous cable section are what let this amplifier reach its rated power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInline main fuse within 20 cm of the battery\u003c\/b\u003e, sized to the cable, plus a ground point on bare metal. Use 0 AWG for the battery run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRespect the minimum load: 2 ohm.\u003c\/b\u003e This is the @2 ohm version: do not wire it below 2 ohm. A lower impedance triggers the protection and, if repeated, damages the output stage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eKeep the supply between 9 V and 16 V\u003c\/b\u003e, 12 V negative ground, and leave air around the amplifier so the fan can work. Professional installation is recommended: damage caused by improper installation is not covered by warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the difference from the @1 ohm version?\u003c\/b\u003eThis is the @2 ohm version: its minimum load is 2 ohm and it reaches 9000 W RMS there. The @1 ohm version is a different product, rated for a different load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer load should I use?\u003c\/b\u003eAny load down to 2 ohm. At 2 ohm you get 9000 W RMS, at 4 ohm 4500 W and at 8 ohm 2300 W.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I wire it to 1 ohm?\u003c\/b\u003eNo. 2 ohm is the minimum load of this version. For a 1 ohm system, choose the SP-9000.1D @1 ohm.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich cable and fuse?\u003c\/b\u003e0 AWG power and ground for the battery run, an inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat are its dimensions?\u003c\/b\u003e392 × 219 × 74 mm. Plan the space with the fan free to move air.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the difference between the SP-9000.1D @2 ohm and the @1 ohm version?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This is the @2 ohm version: its minimum load is 2 ohm and it reaches 9000 W RMS there, 4500 W at 4 ohm and 2300 W at 8 ohm. The @1 ohm version is a different product, rated for a different load.\"}},{\"@type\":\"Question\",\"name\":\"Which subwoofer load should I use with the SP-9000.1D @2 ohm?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Any load down to 2 ohm. At 2 ohm you get 9000 W RMS, at 4 ohm 4500 W and at 8 ohm 2300 W.\"}},{\"@type\":\"Question\",\"name\":\"Can the SP-9000.1D @2 ohm be wired to 1 ohm?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. 2 ohm is the minimum load of this version. For a 1 ohm system, choose the SP-9000.1D @1 ohm.\"}},{\"@type\":\"Question\",\"name\":\"Which power cable and fuse does the SP-9000.1D need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"0 AWG power and ground cable for the battery run, an inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal.\"}},{\"@type\":\"Question\",\"name\":\"What are the dimensions of the SP-9000.1D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"392 x 219 x 74 mm. Plan the space with the fan free to move air.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858384372055,"sku":"40011","price":899.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_228d9d19-7fcb-466b-9b10-1889d4f1bb61.webp?v=1771937736"},{"product_id":"copy-of-sp-9000-1d-2-ohm","title":"SP-18000.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003eMonoblock · Class D · 18000 W RMS @ 1 Ω\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e18000 watt RMS.\u003cbr\u003e\u003cem\u003eOne channel.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eA single-channel amplifier built for the subwoofer stage: 18000 W RMS at 1 ohm, 9500 W RMS at 2 ohm, 5000 W RMS at 4 ohm, with high-pass, low-pass and bass boost already on board and a smart cooling system that runs the fan on temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e18000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e9500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e5000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e STABLE AT 1 Ω\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e HPF + LPF + BASS BOOST\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 28%;\"\u003e5000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 53%;\"\u003e9500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e18000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS AT 14.4 V · CONTINUOUS POWER, NOT BURST · ONE CHANNEL, FROM 4 Ω DOWN TO 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eBuilt to drive 1 ohm\u003c\/b\u003e\n\u003cp\u003e18000 W RMS at 1 ohm measured at 14.4 V, 9500 W RMS at 2 ohm and 5000 W RMS at 4 ohm. The power does not collapse when the load drops: it is where you build it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eThe subwoofer band, already filtered\u003c\/b\u003e\n\u003cp\u003eHigh-pass 15 – 80 Hz, low-pass 80 Hz – 10 kHz and bass boost 0 – 12 dB at 50 Hz, all adjustable on the amplifier. No external processor needed to shape the low end.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling that thinks\u003c\/b\u003e\n\u003cp\u003eThe fan is driven by temperature or by the audio signal, so the amplifier stays quiet when it is cool and moves air only when the music asks for it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected on every side\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection. Input sensitivity 200 mV and a 56 kΩ input impedance take any head unit or DSP output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, crossover and bass boost settings, gain calibration and full specifications.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-18000.1D-Manual-EN-2026.pdf?v=1790452596\" target=\"_blank\" title=\"SP-18000.1D\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eOne SP-18000.1D amplifier, ready to install.\u003c\/b\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e SP-18000.1D monoblock amplifier · user manual (PDF above) · mounting screws.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cables — installation materials, chosen for your vehicle. Price is for one single unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eMAXIMUM OUTPUT POWER @ 14.4 V — RMS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 1 ohm\u003c\/td\u003e\n\u003ctd\u003e18000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 2 ohm\u003c\/td\u003e\n\u003ctd\u003e9500 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 4 ohm\u003c\/td\u003e\n\u003ctd\u003e5000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum supply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum supply voltage\u003c\/td\u003e\n\u003ctd\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, fan driven by temperature or audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS AND INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB (50 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e651 x 219 x 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eSingle unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-1500-1-mini-amplifier\"\u003e\u003csmall\u003eCOMPACT MONOBLOCK\u003c\/small\u003e\u003cstrong\u003eSP-1500.1 MINI — 1500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-6-5cm\"\u003e\u003csmall\u003eMIDRANGE 6,5\" \/ 16,5 CM\u003c\/small\u003e\u003cstrong\u003eSP 6.5CM — 120 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-10cm-plus-200-watt-rms\"\u003e\u003csmall\u003eMIDRANGE 10\" \/ 25 CM\u003c\/small\u003e\u003cstrong\u003eSP 10CM — 200 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-4awg-100-ofc-32mm2-red\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP 4GA RED 100% OFC\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThe electrical system comes first.\u003c\/b\u003e An amplifier of this size asks a lot of the vehicle: generous power and ground cable, an inline fuse on the power cable as close as possible to the battery, sized to the cable section you use, and a battery in good health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClean chassis ground.\u003c\/b\u003e Ground on bare metal, paint and primer removed, with the shortest possible cable. Most noise and shutdown problems start here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The aluminium body and the fan are the cooling system: never cover the amplifier with carpet, luggage or foam, and never mount it face down in a sealed cavity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain by ear, not to maximum.\u003c\/b\u003e Gain is an input matching control, not a volume knob: raise it until the sound is clean and loud, and back off at the first sign of distortion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow much power does the SP-18000.1D really give?\u003c\/b\u003e18000 W RMS at 1 ohm, 9500 W RMS at 2 ohm and 5000 W RMS at 4 ohm, measured at 14.4 V. Continuous RMS.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eIs it stable at 1 ohm?\u003c\/b\u003eYes. One ohm is the load it is built for, and it is where it delivers its full 18000 W RMS.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat supply voltage does it need?\u003c\/b\u003eFrom 9 V to 16 V, negative ground. Put an inline fuse on the power cable as close as possible to the battery, sized to the cable section you use.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat crossovers does it have on board?\u003c\/b\u003eA high-pass from 15 to 80 Hz, a low-pass from 80 Hz to 10 kHz and a bass boost of 0 – 12 dB at 50 Hz, all adjustable on the amplifier.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eIs the price for one unit?\u003c\/b\u003eYes, the price is for one single amplifier.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much power does the SP-18000.1D give?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"18000 W RMS at 1 ohm, 9500 W RMS at 2 ohm and 5000 W RMS at 4 ohm, measured at 14.4 V. Continuous RMS.\"}}, {\"@type\": \"Question\", \"name\": \"Is the SP-18000.1D stable at 1 ohm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. One ohm is the load the amplifier is built for, and it is where it delivers its full 18000 W RMS.\"}}, {\"@type\": \"Question\", \"name\": \"What supply voltage does the SP-18000.1D need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"From 9 V to 16 V, negative ground, with an inline fuse on the power cable as close as possible to the battery, sized to the cable section used.\"}}, {\"@type\": \"Question\", \"name\": \"What crossovers does the SP-18000.1D have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and a bass boost of 0 to 12 dB at 50 Hz, all adjustable on the amplifier.\"}}, {\"@type\": \"Question\", \"name\": \"Is the SP-18000.1D price for one unit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the price is for one single amplifier.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858385060183,"sku":"40013","price":2305.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/2_79b2da97-213b-4fbe-8633-3239bb4b5022.webp?v=1771938014"},{"product_id":"copy-of-sp-18000-1d-1-ohm","title":"SP-32000.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003eMonoblock · Class D · 32000 W RMS @ 1 Ω\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e32000 watt RMS.\u003cbr\u003e\u003cem\u003eOne channel.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eA single-channel amplifier built for the subwoofer stage: 32000 W RMS at 1 ohm, 16500 W RMS at 2 ohm, 9000 W RMS at 4 ohm, with high-pass, low-pass and bass boost already on board and a smart cooling system that runs the fan on temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e32000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e16500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e9000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e STABLE AT 1 Ω\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e HPF + LPF + BASS BOOST\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 28%;\"\u003e9000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 52%;\"\u003e16500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e32000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS AT 14.4 V · CONTINUOUS POWER, NOT BURST · ONE CHANNEL, FROM 4 Ω DOWN TO 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eBuilt to drive 1 ohm\u003c\/b\u003e\n\u003cp\u003e32000 W RMS at 1 ohm measured at 14.4 V, 16500 W RMS at 2 ohm and 9000 W RMS at 4 ohm. The power does not collapse when the load drops: it is where you build it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eThe subwoofer band, already filtered\u003c\/b\u003e\n\u003cp\u003eHigh-pass 15 – 80 Hz, low-pass 80 Hz – 10 kHz and bass boost 0 – 12 dB at 50 Hz, all adjustable on the amplifier. No external processor needed to shape the low end.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling that thinks\u003c\/b\u003e\n\u003cp\u003eThe fan is driven by temperature or by the audio signal, so the amplifier stays quiet when it is cool and moves air only when the music asks for it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected on every side\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection. Input sensitivity 200 mV and a 56 kΩ input impedance take any head unit or DSP output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, crossover and bass boost settings, gain calibration and full specifications.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-32000.1D-Manual-EN-2026.pdf?v=1790452596\" target=\"_blank\" title=\"32KW\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eOne SP-32000.1D amplifier, ready to install.\u003c\/b\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e SP-32000.1D monoblock amplifier · user manual (PDF above) · mounting screws.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cables — installation materials, chosen for your vehicle. Price is for one single unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eMAXIMUM OUTPUT POWER @ 14.4 V — RMS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 1 ohm\u003c\/td\u003e\n\u003ctd\u003e32000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 2 ohm\u003c\/td\u003e\n\u003ctd\u003e16500 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 4 ohm\u003c\/td\u003e\n\u003ctd\u003e9000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum supply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum supply voltage\u003c\/td\u003e\n\u003ctd\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, fan driven by temperature or audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS AND INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB (50 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e925 x 219 x 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eSingle unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15xxx-10-000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15XXX CARBON FIBERS — 10000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15x-carbon-fiber-6000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15X CARBON FIBERS — 6000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX BIG SURROUND — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-12cx-2500-watt-rms-power\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CX — 2500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThe electrical system comes first.\u003c\/b\u003e An amplifier of this size asks a lot of the vehicle: generous power and ground cable, an inline fuse on the power cable as close as possible to the battery, sized to the cable section you use, and a battery in good health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClean chassis ground.\u003c\/b\u003e Ground on bare metal, paint and primer removed, with the shortest possible cable. Most noise and shutdown problems start here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The aluminium body and the fan are the cooling system: never cover the amplifier with carpet, luggage or foam, and never mount it face down in a sealed cavity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain by ear, not to maximum.\u003c\/b\u003e Gain is an input matching control, not a volume knob: raise it until the sound is clean and loud, and back off at the first sign of distortion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow much power does the SP-32000.1D really give?\u003c\/b\u003e32000 W RMS at 1 ohm, 16500 W RMS at 2 ohm and 9000 W RMS at 4 ohm, measured at 14.4 V. Continuous RMS.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eIs it stable at 1 ohm?\u003c\/b\u003eYes. One ohm is the load it is built for, and it is where it delivers its full 32000 W RMS.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat supply voltage does it need?\u003c\/b\u003eFrom 9 V to 16 V, negative ground. Put an inline fuse on the power cable as close as possible to the battery, sized to the cable section you use.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat crossovers does it have on board?\u003c\/b\u003eA high-pass from 15 to 80 Hz, a low-pass from 80 Hz to 10 kHz and a bass boost of 0 – 12 dB at 50 Hz, all adjustable on the amplifier.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eIs the price for one unit?\u003c\/b\u003eYes, the price is for one single amplifier.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much power does the SP-32000.1D give?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"32000 W RMS at 1 ohm, 16500 W RMS at 2 ohm and 9000 W RMS at 4 ohm, measured at 14.4 V. Continuous RMS.\"}}, {\"@type\": \"Question\", \"name\": \"Is the SP-32000.1D stable at 1 ohm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. One ohm is the load the amplifier is built for, and it is where it delivers its full 32000 W RMS.\"}}, {\"@type\": \"Question\", \"name\": \"What supply voltage does the SP-32000.1D need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"From 9 V to 16 V, negative ground, with an inline fuse on the power cable as close as possible to the battery, sized to the cable section used.\"}}, {\"@type\": \"Question\", \"name\": \"What crossovers does the SP-32000.1D have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and a bass boost of 0 to 12 dB at 50 Hz, all adjustable on the amplifier.\"}}, {\"@type\": \"Question\", \"name\": \"Is the SP-32000.1D price for one unit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the price is for one single amplifier.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858387059031,"sku":"40016","price":3900.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/2_0f24775c-7095-4c3e-ace8-0f592fbee775.webp?v=1771937987"},{"product_id":"sp-32000-1d-1-ohm-copy","title":"SP-45000.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003eMonoblock · Class D · 45000 W RMS @ 1 Ω\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e45000 watt RMS.\u003cbr\u003e\u003cem\u003eOne channel.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eA single-channel amplifier built for the subwoofer stage: 45000 W RMS at 1 ohm, 23000 W RMS at 2 ohm, 12000 W RMS at 4 ohm, with high-pass, low-pass and bass boost already on board and a smart cooling system that runs the fan on temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e45000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e23000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e12000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e STABLE AT 1 Ω\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e HPF + LPF + BASS BOOST\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 27%;\"\u003e12000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 51%;\"\u003e23000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e1 CH · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e45000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS AT 14.4 V · CONTINUOUS POWER, NOT BURST · ONE CHANNEL, FROM 4 Ω DOWN TO 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eBuilt to drive 1 ohm\u003c\/b\u003e\n\u003cp\u003e45000 W RMS at 1 ohm measured at 14.4 V, 23000 W RMS at 2 ohm and 12000 W RMS at 4 ohm. The power does not collapse when the load drops: it is where you build it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eThe subwoofer band, already filtered\u003c\/b\u003e\n\u003cp\u003eHigh-pass 15 – 80 Hz, low-pass 80 Hz – 10 kHz and bass boost 0 – 12 dB at 50 Hz, all adjustable on the amplifier. No external processor needed to shape the low end.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eSmart cooling that thinks\u003c\/b\u003e\n\u003cp\u003eThe fan is driven by temperature or by the audio signal, so the amplifier stays quiet when it is cool and moves air only when the music asks for it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected on every side\u003c\/b\u003e\n\u003cp\u003eOutput short circuit, high supply voltage, low supply voltage and thermal protection. Input sensitivity 200 mV and a 56 kΩ input impedance take any head unit or DSP output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eWiring, loads and impedance, crossover and bass boost settings, gain calibration and full specifications.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-45000.1D-Manual-EN-2026.pdf?v=1790452595\" target=\"_blank\" title=\"45KW\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eOne SP-45000.1D amplifier, ready to install.\u003c\/b\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e SP-45000.1D monoblock amplifier · user manual (PDF above) · mounting screws.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cables — installation materials, chosen for your vehicle. Price is for one single unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eMAXIMUM OUTPUT POWER @ 14.4 V — RMS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 1 ohm\u003c\/td\u003e\n\u003ctd\u003e45000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 2 ohm\u003c\/td\u003e\n\u003ctd\u003e23000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 channel @ 4 ohm\u003c\/td\u003e\n\u003ctd\u003e12000 W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum supply voltage\u003c\/td\u003e\n\u003ctd\u003e9 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum supply voltage\u003c\/td\u003e\n\u003ctd\u003e16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal management\u003c\/td\u003e\n\u003ctd\u003eSmart cooling system, fan driven by temperature or audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS AND INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 Hz – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB (50 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eDIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1055 x 219 x 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eSingle unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-15xxx-10-000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15XXX CARBON FIBERS — 10000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15x-carbon-fiber-6000-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15X CARBON FIBERS — 6000 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX BIG SURROUND — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-12cx-2500-watt-rms-power\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CX — 2500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThe electrical system comes first.\u003c\/b\u003e An amplifier of this size asks a lot of the vehicle: generous power and ground cable, an inline fuse on the power cable as close as possible to the battery, sized to the cable section you use, and a battery in good health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClean chassis ground.\u003c\/b\u003e Ground on bare metal, paint and primer removed, with the shortest possible cable. Most noise and shutdown problems start here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave it room to breathe.\u003c\/b\u003e The aluminium body and the fan are the cooling system: never cover the amplifier with carpet, luggage or foam, and never mount it face down in a sealed cavity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain by ear, not to maximum.\u003c\/b\u003e Gain is an input matching control, not a volume knob: raise it until the sound is clean and loud, and back off at the first sign of distortion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow much power does the SP-45000.1D really give?\u003c\/b\u003e45000 W RMS at 1 ohm, 23000 W RMS at 2 ohm and 12000 W RMS at 4 ohm, measured at 14.4 V. Continuous RMS.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eIs it stable at 1 ohm?\u003c\/b\u003eYes. One ohm is the load it is built for, and it is where it delivers its full 45000 W RMS.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat supply voltage does it need?\u003c\/b\u003eFrom 9 V to 16 V, negative ground. Put an inline fuse on the power cable as close as possible to the battery, sized to the cable section you use.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat crossovers does it have on board?\u003c\/b\u003eA high-pass from 15 to 80 Hz, a low-pass from 80 Hz to 10 kHz and a bass boost of 0 – 12 dB at 50 Hz, all adjustable on the amplifier.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eIs the price for one unit?\u003c\/b\u003eYes, the price is for one single amplifier.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much power does the SP-45000.1D give?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"45000 W RMS at 1 ohm, 23000 W RMS at 2 ohm and 12000 W RMS at 4 ohm, measured at 14.4 V. Continuous RMS.\"}}, {\"@type\": \"Question\", \"name\": \"Is the SP-45000.1D stable at 1 ohm?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. One ohm is the load the amplifier is built for, and it is where it delivers its full 45000 W RMS.\"}}, {\"@type\": \"Question\", \"name\": \"What supply voltage does the SP-45000.1D need?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"From 9 V to 16 V, negative ground, with an inline fuse on the power cable as close as possible to the battery, sized to the cable section used.\"}}, {\"@type\": \"Question\", \"name\": \"What crossovers does the SP-45000.1D have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A high-pass filter from 15 to 80 Hz, a low-pass filter from 80 Hz to 10 kHz and a bass boost of 0 to 12 dB at 50 Hz, all adjustable on the amplifier.\"}}, {\"@type\": \"Question\", \"name\": \"Is the SP-45000.1D price for one unit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the price is for one single amplifier.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":49047363158359,"sku":"40018","price":4690.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/2_cfcb2925-555d-41dd-af48-9c07976d2706.webp?v=1771937960"},{"product_id":"sp-600-1d-1-ohm","title":"SP-600.1D - @1 ohm","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · mono digital · 600 W RMS\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e600 watt RMS.\u003cbr\u003e\u003cem\u003eOne subwoofer.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne mono digital channel, all the current for a single subwoofer: 600 W RMS at 2 ohm, 300 W at 4 ohm, 200 W at 8 ohm. Variable high-pass and low-pass filters, bass boost, and a cooling fan driven by temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e200\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 8 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e MONO DIGITAL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e SMART COOLING FAN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e EASY INSTALL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e300 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e600 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, one subwoofer\u003c\/b\u003e\n\u003cp\u003eA single mono output stage: 600 W RMS at 2 ohm, 300 W at 4 ohm, 200 W at 8 ohm. No bridging, no power shared between channels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eA fan that thinks\u003c\/b\u003e\n\u003cp\u003eSmart Cooling System: the fan is driven by temperature, so it stays quiet while the amplifier is cool and steps in when the heatsink warms up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eFilters for every build\u003c\/b\u003e\n\u003cp\u003eHigh-pass 15–80 Hz, low-pass 80 Hz–10 kHz and bass boost 0–12 dB at 50 Hz: it works as a subwoofer amplifier or as a mono full-range channel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eProtection against output short circuit, high and low supply voltage and overheating. It runs on any 12 V system between 9 and 16 V.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eControls and connections\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003eUSER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eWiring, loads \u0026amp; impedance, filters, gain calibration and full specifications.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SPAUDIO-SP-600.1D-1OHM-Manual-EN-2026.pdf?v=1790452607\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · 2026\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eWhat you receive\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eAmplifier, sold as a single unit.\u003c\/b\u003e\n\u003cp\u003eThe SP-600.1D is supplied as one unit in its own packaging, ready to install.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the box:\u003c\/b\u003e SP-600.1D amplifier.\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cable — installation materials, chosen for your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT — RMS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 8 ohm\u003c\/td\u003e\n\u003ctd\u003e200 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eMono digital, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS \u0026amp; INPUTS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 20 kHz (±3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput impedance\u003c\/td\u003e\n\u003ctd\u003e56 k ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-pass filter (HPF)\u003c\/td\u003e\n\u003ctd\u003e15 – 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e80 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – 12 dB at 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e9 – 16 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eSmart Cooling System, temperature-driven fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOutput short circuit, high supply voltage, low supply voltage, thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eMECHANICAL \u0026amp; DIMENSIONS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e129 × 219 × 74 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003eUnit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-12cw-300-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CW — 300 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-12c-400-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12C — 400 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-8-awg\"\u003e\u003csmall\u003ePOWER CABLE KIT\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 8 AWG\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-db-01\"\u003e\u003csmall\u003eDISTRIBUTION BLOCK\u003c\/small\u003e\u003cstrong\u003eSP DB 01 — 1×0 GA IN\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSize the power cable and the inline fuse.\u003c\/b\u003e Use a cable section suited to the current and a main fuse within 20 cm of the battery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClean chassis ground.\u003c\/b\u003e Ground on bare metal, scraped free of paint, with the shortest cable you can run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eKeep it ventilated.\u003c\/b\u003e The fan and the heatsink need free air: never cover the amplifier with carpet, luggage or foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the gain to the source, not to maximum.\u003c\/b\u003e Input sensitivity is 200 mV: turning the gain fully up only adds distortion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e08\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003eThe data sheet rates it down to 2 ohm: 600 W RMS at 2 ohm, 300 W at 4 ohm, 200 W at 8 ohm.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCan I use it full range, not only for a subwoofer?\u003c\/b\u003eYes. The low-pass filter reaches 10 kHz and there is a high-pass 15–80 Hz, so it also works as a mono full-range channel.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDoes the fan run all the time?\u003c\/b\u003eNo. The Smart Cooling System drives the fan from temperature, so it runs only when the amplifier heats up.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich voltage does it need?\u003c\/b\u003eA 12 V system, negative ground: it works between 9 and 16 V.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow big is it?\u003c\/b\u003e129 × 219 × 74 mm.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"SP-600.1D — What is the minimum impedance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The data sheet rates it down to 2 ohm: 600 W RMS at 2 ohm, 300 W at 4 ohm, 200 W at 8 ohm.\"}},{\"@type\":\"Question\",\"name\":\"SP-600.1D — Can I use it full range, not only for a subwoofer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The low-pass filter reaches 10 kHz and there is a high-pass 15–80 Hz, so it also works as a mono full-range channel.\"}},{\"@type\":\"Question\",\"name\":\"SP-600.1D — Does the fan run all the time?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. The Smart Cooling System drives the fan from temperature, so it runs only when the amplifier heats up.\"}},{\"@type\":\"Question\",\"name\":\"SP-600.1D — Which voltage does it need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A 12 V system, negative ground: it works between 9 and 16 V.\"}},{\"@type\":\"Question\",\"name\":\"SP-600.1D — How big is it?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"129 × 219 × 74 mm.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":50806124675415,"sku":"40601","price":219.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_cf4bbfa2-5f02-43df-9057-30f18883312e.webp?v=1771937927"},{"product_id":"sp-1500-1-mini-amplifier","title":"SP-1500.1 MINI — MONO CLASS D AMPLIFIER 1500W RMS","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e.sp4{background:#0B0B0B;color:#E8E8E8;border-radius:14px;overflow:hidden;font-size:16px;line-height:1.6}.sp4 img{display:block;width:100%;height:auto}.sp4 .band{background:#E8560F}.sp4 .pill{display:inline-block;background:#E8560F;color:#fff;font-size:9.5px;font-weight:800;letter-spacing:1.5px;padding:6px 10px;text-transform:uppercase;white-space:nowrap}.sp4 h2.big,.sp4 .sec h3,.sp4 .card b,.sp4 .faq b,.sp4 .pair strong{color:#fff}.sp4 .in,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .top,.sp4 .vids,.sp4 .rea{padding-left:22px;padding-right:22px}.sp4 .vids figure{margin:0 auto 16px;max-width:430px}.sp4 .vids video{display:block;width:100%;height:auto;background:#0B0B0B;border:1px solid #262626;border-radius:10px}.sp4 .vids figcaption{font-size:10.5px;letter-spacing:1.4px;color:#9d9d9d;text-transform:uppercase;padding:9px 2px 0;text-align:center}.sp4 .vids figcaption b{color:#E8560F}.sp4 .rea{display:flex;flex-wrap:wrap;gap:8px;padding-top:6px;padding-bottom:4px}.sp4 .rea span{flex:1 1 150px;background:#161616;border:1px solid #262626;border-left:3px solid #E8560F;padding:9px 11px;font-size:10.5px;font-weight:800;letter-spacing:1.2px;color:#d6d6d6;text-transform:uppercase}.sp4 .top{display:flex;align-items:center;justify-content:space-between;gap:14px}.sp4 .top img{width:186px;height:105px;flex:0 0 auto}.sp4 .trust{display:flex;flex-wrap:wrap;gap:8px;padding:8px 22px 0}.sp4 .trust span{flex:1 1 165px;background:#111;border:1px solid #232323;padding:8px 10px;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9d9d9d;text-transform:uppercase}.sp4 .trust b{color:#E8560F;font-weight:800}.sp4 .paym{padding:14px 22px 2px;font-size:9.5px;font-weight:800;letter-spacing:1.7px;line-height:1.8;color:#7a7a7a;text-transform:uppercase;text-align:center}@media screen and (min-width:1000px){.product{row-gap:0!important}.product-info{display:contents!important}.product-gallery{grid-column:1!important;grid-row:1\/span 99!important}.product-info__block-item{grid-column:2!important}.product-info__block-item[data-block-type=description]{grid-column:1\/-1!important;grid-row:100!important;margin-top:44px!important}.sp4{font-size:17px}.sp4 .in,.sp4 .top,.sp4 .tags,.sp4 .bar,.sp4 .cards,.sp4 .pair,.sp4 .foot,.sp4 .rea,.sp4 .sec,.sp4 .band,.sp4 .paym,.sp4 .fine,.sp4 .swipe,.sp4 .pnl,.sp4 .trust{padding-left:40px;padding-right:40px}.sp4 .frame,.sp4 .quote,.sp4 .dl,.sp4 .cw,.sp4 .tw,.sp4 .warn,.sp4 .faq,.sp4 .sup{margin-left:40px;margin-right:40px}.sp4 h2.big{font-size:66px}.sp4 .sub{max-width:66ch;font-size:17px}.sp4 .band b{font-size:46px}.sp4 .card{flex:1 1 300px}.sp4 .cards{gap:14px}.sp4 .pnl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.sp4 .tw,.sp4 .warn,.sp4 .sup{max-width:1040px;margin-left:auto;margin-right:auto}.sp4 .dl{max-width:780px;margin-left:auto;margin-right:auto}.sp4 .quote{max-width:1150px}.sp4 .faq{columns:2;column-gap:40px}.sp4 .faq div{break-inside:avoid}.sp4 .sec{margin-top:48px}.sp4 .swipe figure{flex:0 0 330px;max-width:330px}}\u003c\/style\u003e\n\u003cdiv class=\"sp4\"\u003e\n\u003cdiv class=\"top\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/sp-audio-logo-mark.png?v=1788926315\u0026amp;width=380\" alt=\"SP Audio - Super Power Audio\" width=\"186\" height=\"105\" decoding=\"async\"\u003e\u003cspan class=\"rg\"\u003e\u003cb\u003eSUPER POWER AUDIO\u003c\/b\u003e\u003cbr\u003eDESIGNED IN ITALY\u003cbr\u003eMMXXVI\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"in\"\u003e\n\u003cspan class=\"pill\"\u003e1 channel · class D · mini series\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e1500 watt RMS.\u003cbr\u003e\u003cem\u003e46 mm high.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eOne channel. All the current. Into one subwoofer, at 1 ohm — from a chassis that hides under a seat. Designed in Italy, verified with Audio Precision test equipment before it leaves the line.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"frame\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_5a5f5c1f-aad9-4b53-a08f-331b0057f59d.jpg?v=1790163902\u0026amp;width=760\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_5a5f5c1f-aad9-4b53-a08f-331b0057f59d.jpg?v=1790163902\u0026amp;width=440 440w, https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_5a5f5c1f-aad9-4b53-a08f-331b0057f59d.jpg?v=1790163902\u0026amp;width=620 620w, https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_5a5f5c1f-aad9-4b53-a08f-331b0057f59d.jpg?v=1790163902\u0026amp;width=900 900w\" sizes=\"(max-width: 640px) 92vw, 660px\" alt=\"SP-1500.1 MINI monoblock amplifier on a wooden installer workbench with RCA cable\" width=\"760\" height=\"760\" decoding=\"async\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"tri\"\u003e\n\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003ci\u003e\u003c\/i\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"band\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 4 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1000\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 2 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1500\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS · 1 Ω MONO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rea\"\u003e\n\u003cspan\u003eFree shipping\u003c\/span\u003e\u003cspan\u003eDispatched from Italy in 24–48 working hours\u003c\/span\u003e\u003cspan\u003eWarranty on manufacturing defects\u003c\/span\u003e\u003cspan\u003eFree technical support from Italy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"trust\"\u003e\n\u003cspan\u003e\u003cb\u003e🔒\u003c\/b\u003e Secure checkout · SSL \u0026amp; PCI DSS\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e↩\u003c\/b\u003e 14 days to change your mind (EU)\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e Invoice from an Italian company\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tags\"\u003e\n\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e ITALIAN DESIGN\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e AUDIO PRECISION TESTED\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e EASY INSTALL\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e FREE SUPPORT\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e WOODEN CASE\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e01\u003c\/u\u003e\n\u003ch3\u003ePower, measured not promised\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 40%;\"\u003e600 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 67%;\"\u003e1000 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003eMONO · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e1500 W\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14,4 V · ≤ 1% THD+N · CONTINUOUS POWER, NOT BURST · MINIMUM LOAD 1 Ω\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e02\u003c\/u\u003e\n\u003ch3\u003eWhy this amplifier\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOne channel, all the current\u003c\/b\u003e\n\u003cp\u003eA single output stage delivers its full rated power into 1 ohm: no bridging, no compromise between two channels. Everything goes to one subwoofer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eIt fits where others do not\u003c\/b\u003e\n\u003cp\u003e270 × 112 × 46 mm. Under a seat, behind a side panel, inside a false floor: the boot stays usable and the cable runs stay short.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eIt accepts any source\u003c\/b\u003e\n\u003cp\u003eInput sensitivity 200 mV – 6 V. High-output head units and DSP processors drive it without clipping the input; low-level factory sources are covered too.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eProtected, not fragile\u003c\/b\u003e\n\u003cp\u003eShort-circuit, thermal and voltage protection with LED diagnostics, 4 × 30 A on-board fuses. It defends itself instead of dying quietly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"quote\"\u003e“Continuous RMS only. No peak, no burst, no marketing watts.”\u003c\/div\u003e\n\u003cdiv class=\"dl\"\u003e\n\u003cdiv class=\"k\"\u003ePROFESSIONAL USER MANUAL · 26 PAGES\u003c\/div\u003e\n\u003cp\u003eWiring, loads \u0026amp; impedance, filters, gain calibration and full specifications.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/SP-1500.1-MINI-user-manual-EN.pdf?v=1788873463\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"display: inline-block; background: rgb(232, 86, 15); padding: 18px 36px; border-radius: 6px; letter-spacing: 1px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; text-transform: uppercase; box-shadow: rgba(232, 86, 15, 0.35) 0px 8px 24px;\"\u003e\u003cb\u003e⇩ Download the manual (PDF)\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003cp class=\"n\"\u003eEnglish · Rev. 1.0 · September 2026 · 1,3 MB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e03\u003c\/u\u003e\n\u003ch3\u003eNot a box. A case.\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cw\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eBlack wood, metal latch, pine inside.\u003c\/b\u003e\n\u003cp\u003eThe SP-1500.1 MINI arrives in a black wooden case with the SP mark and the tricolour on the lid. A rigid shell during shipping, the safest way to store or transport the amplifier afterwards — and a box people keep.\u003c\/p\u003e\n\u003cp class=\"sm\"\u003e\u003cb\u003eIn the case:\u003c\/b\u003e amplifier · collector’s wooden case · printed user manual · 4 mounting screws (3,5 × 20 mm).\u003cbr\u003e\u003cb\u003eNot included:\u003c\/b\u003e power and speaker cable, inline fuse holder and RCA cable — installation materials, chosen for your vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ph\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_d189b597-f15c-4e71-ba25-a126ca8f256d.png?v=1790163902\u0026amp;width=560\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_d189b597-f15c-4e71-ba25-a126ca8f256d.png?v=1790163902\u0026amp;width=380 380w, https:\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/download_d189b597-f15c-4e71-ba25-a126ca8f256d.png?v=1790163902\u0026amp;width=560 560w\" sizes=\"(max-width: 640px) 92vw, 340px\" alt=\"SP-1500.1 MINI with its black collector's wooden case and printed manual on a wooden table\" width=\"560\" height=\"409\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e04\u003c\/u\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tw\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER OUTPUT — RMS @ 14,4 V, ≤ 1% THD+N\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 4 ohm\u003c\/td\u003e\n\u003ctd\u003e600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 2 ohm\u003c\/td\u003e\n\u003ctd\u003e1000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMono 1 ohm\u003c\/td\u003e\n\u003ctd\u003e1500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eAUDIO\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopology\u003c\/td\u003e\n\u003ctd\u003eClass D, mono, 1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e10 Hz – 200 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N ratio\u003c\/td\u003e\n\u003ctd\u003e≥ 90 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput sensitivity\u003c\/td\u003e\n\u003ctd\u003e200 mV – 6 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eRCA, R \/ L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eFILTERS\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e45 – 200 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInfrasonic (subsonic) filter\u003c\/td\u003e\n\u003ctd\u003e10 – 50 Hz, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass boost\u003c\/td\u003e\n\u003ctd\u003e0 – +12 dB, variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003ePOWER SUPPLY \u0026amp; PROTECTION\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply\u003c\/td\u003e\n\u003ctd\u003e12 V negative ground, 14,4 V nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote turn-on\u003c\/td\u003e\n\u003ctd\u003e+12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-board fuses\u003c\/td\u003e\n\u003ctd\u003e4 × 30 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended cable\u003c\/td\u003e\n\u003ctd\u003e4 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eShort circuit, thermal, voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicators\u003c\/td\u003e\n\u003ctd\u003ePOWER (green) · PROTECT (red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\"\u003eMECHANICAL \u0026amp; QUALITY\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions L × W × H\u003c\/td\u003e\n\u003ctd\u003e270 × 112 × 46 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting points\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eAluminium, heat-dissipating fins, rubber bumpers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminals\u003c\/td\u003e\n\u003ctd\u003eDirect-insert, screw clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB\u003c\/td\u003e\n\u003ctd\u003e2-layer, surface-mount technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVerification\u003c\/td\u003e\n\u003ctd\u003eAudio Precision quality control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eCollector’s wooden case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\" style=\"padding-top: 10px;\"\u003eMANUFACTURER’S LABORATORY DATA · PEAK OR “BURST” FIGURES USED IN SOME MARKETS ARE NOT RMS AND ARE NOT LISTED\u003c\/p\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e05\u003c\/u\u003e\n\u003ch3\u003eComplete the system\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pair\"\u003e\n\u003ca href=\"\/en\/products\/sp-12cxx-2800-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 12\" \/ 30 CM\u003c\/small\u003e\u003cstrong\u003eSP 12CXXX — 2800 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-15cxxx-3500-watt-rms\"\u003e\u003csmall\u003eSUBWOOFER 15\" \/ 38 CM\u003c\/small\u003e\u003cstrong\u003eSP 15CXXX — 3500 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-4awg-100-ofc-32mm2-red\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP 4GA RED 100% OFC\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/sp-afs-01-fuseholder-mini-anl-1x4ga-8ga-in-1x4-8-ga-out\"\u003e\u003csmall\u003eLINE PROTECTION\u003c\/small\u003e\u003cstrong\u003eSP AFS4 fuse holder 4 GA\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e06\u003c\/u\u003e\n\u003ch3\u003eBefore you install it\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eInline main fuse within 20 cm of the battery\u003c\/b\u003e, sized to the cable. The amplifier is fused on board at 4 × 30 A, but the battery run must be protected too.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRespect the minimum load: 1 ohm.\u003c\/b\u003e A lower impedance triggers the protection and, if repeated, damages the output stage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLeave the fins free.\u003c\/b\u003e The aluminium fins are the whole cooling system: never cover the amplifier with carpet, luggage or foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e12 V systems only\u003c\/b\u003e, negative ground. Professional installation is recommended: damage caused by improper installation is not covered by warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sec\"\u003e\n\u003cu\u003e07\u003c\/u\u003e\n\u003ch3\u003eQuestions installers ask\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich subwoofer impedance should I use?\u003c\/b\u003eAny load down to 1 ohm. A dual 2 ohm voice-coil subwoofer wired in parallel gives 1 ohm and the full 1500 W RMS; the same subwoofer in series gives 4 ohm and 600 W.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow many subwoofers can it drive?\u003c\/b\u003eAs many as keep the total load at 1 ohm or above — for example two dual 4 ohm subwoofers, or one dual 2 ohm.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich power cable and fuse?\u003c\/b\u003e4 AWG power and ground, an inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWill it fit under a seat?\u003c\/b\u003e270 × 112 × 46 mm, mounted on 4 points, with the fins left free for air. It is designed for exactly that installation.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDoes it come with a manual?\u003c\/b\u003eYes: a printed manual in the wooden case, plus the PDF above with wiring diagrams, filter settings and gain calibration.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sup\"\u003e\n\u003cb\u003eFree technical support from Italy.\u003c\/b\u003e Write or call and a person answers, with the real data of the product sheets. Tell us what you want to build — impedance, power, box litres, crossover points — and we will help you match it.\u003cbr\u003e\u003ca href=\"mailto:spaudio@spaudio.it\"\u003espaudio@spaudio.it\u003c\/a\u003e · +39 340 807 8778\u003c\/div\u003e\n\u003cp class=\"paym\"\u003eAccepted payment methods\u003cbr\u003eVisa · Mastercard · Maestro · American Express · PayPal · Apple Pay · Google Pay · Shop Pay · Klarna\u003c\/p\u003e\n\u003cp class=\"fine\"\u003eSP Audio — Super Power Audio. Designed in Italy by Audiocar Import \u0026amp; Export SRLS, Milano, official SP Audio distributor for Europe.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Which subwoofer impedance should I use with the SP-1500.1 MINI?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Any load down to 1 ohm. A dual 2 ohm voice-coil subwoofer wired in parallel gives 1 ohm and the full 1500 W RMS; the same subwoofer in series gives 4 ohm and 600 W.\"}},{\"@type\":\"Question\",\"name\":\"How many subwoofers can the SP-1500.1 MINI drive?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"As many as keep the total load at 1 ohm or above - for example two dual 4 ohm subwoofers, or one dual 2 ohm subwoofer.\"}},{\"@type\":\"Question\",\"name\":\"Which power cable and fuse does the SP-1500.1 MINI need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"4 AWG power and ground cable, an inline fuse within 20 cm of the battery sized to the cable, and a ground point on bare metal. The amplifier is fused on board at 4 x 30 A.\"}},{\"@type\":\"Question\",\"name\":\"Will the SP-1500.1 MINI fit under a car seat?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: 270 x 112 x 46 mm, mounted on 4 points, with the aluminium fins left free for air.\"}},{\"@type\":\"Question\",\"name\":\"Does the SP-1500.1 MINI come with a manual?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: a printed manual inside the wooden case, plus the PDF on the product page with wiring diagrams, filter settings and gain calibration.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":52810232594775,"sku":"91000","price":175.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_898a574b-1d4a-49de-b992-1ac6bf3c4bfd.webp?v=1775648890"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/collections\/AMP_MONO.webp?v=1771658535","url":"https:\/\/spaudiothailandia.com\/en\/collections\/amplifier-mono-new.oembed","provider":"spaudio","version":"1.0","type":"link"}