{"title":"AMPLIFIER 4 CHANNEL - NEW","description":"\u003ch5\u003e\n\u003cmeta charset=\"utf-8\"\u003eAmplifiers\u0026amp;nbsp;4-channel are designed to deliver power and audio quality to the standard four speakers found in most cars, ensuring an even and balanced sound distribution throughout the vehicle.\u003cbr\u003e\n\u003c\/h5\u003e","products":[{"product_id":"copy-of-sp-32000-1d-1-ohm","title":"SP-1200.4D - @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\"\u003e4 channels · class D · stable to 1 ohm\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e4 × 1200 W RMS.\u003cbr\u003e\u003cem\u003eOne amplifier, the whole system.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eThe biggest of the SP four-channel amplifiers: 1200 W RMS on every channel at 1 ohm. Two front and two rear speakers driven with power to spare, or two channels bridged onto a subwoofer while the other two keep the front stage.\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 · 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 2 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e1200\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 1 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 CONTINUOUS RMS ONLY\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e BRIDGEABLE\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\u003e4 CH · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 33%;\"\u003e400 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e4 CH · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e600 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e4 CH · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e1200 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · PER CHANNEL · MINIMUM LOAD 1 Ω PER CHANNEL\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\u003eThe whole system on one chassis\u003c\/b\u003e\n\u003cp\u003eTwo front and two rear speakers, driven with real RMS power. One power run, one ground, one remote: less wiring in the car and less to go wrong.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOr front stage plus subwoofer\u003c\/b\u003e\n\u003cp\u003eBridge two channels onto a subwoofer — 2 × 2400 W RMS at 2 ohm bridged — and keep the other two for the front speakers. A complete system with a single amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003ePlan the electrical system\u003c\/b\u003e\n\u003cp\u003eAt this power level the battery, the alternator, the cable section and the fuses decide the result. Weak wiring means low voltage, and low voltage means protection.\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, with a temperature-driven fan. It works between 9 V 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=\"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 AMPLIFIERS · USER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eThe general SP Audio amplifier 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-1200.4D-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\u003eThe amplifier, ready to wire.\u003c\/b\u003e\n\u003cp\u003eThe SP-1200.4D @1 ohm is sold as a single unit, packed for transport. Plan the speaker loads first: four channels at 1, 2 or 4 ohm, or two of them bridged onto a subwoofer.\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 PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 400 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 1200 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBridged, 2 ohm\u003c\/td\u003e\n\u003ctd\u003e2 × 2400 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm per 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\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, 4 channels\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 Hz – 6 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e50 Hz – 2 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\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-8cm-150-watt-rms\"\u003e\u003csmall\u003eMIDRANGE 8\" \/ 20 CM\u003c\/small\u003e\u003cstrong\u003eSP 8CM — 150 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\/kit-cable-4-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 4 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\u003eInline main fuse within 20 cm of the battery\u003c\/b\u003e, sized to the cable, and a ground point on bare metal. At this power level use a generous cable section on the battery run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRespect the minimum load: 1 ohm per channel.\u003c\/b\u003e Bridged, do not go below 2 ohm. A lower impedance triggers the protection and, if repeated, damages the output stage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the filters before you set the gain.\u003c\/b\u003e High-pass on the front and rear channels, low-pass on the bridged pair if it drives a subwoofer: it protects the speakers and cleans up the sound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e12 V systems only\u003c\/b\u003e, negative ground, supply between 9 V and 16 V, with air around the amplifier for the fan. 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\u003eCan it drive a complete system?\u003c\/b\u003eYes: two front and two rear speakers on the four channels, or a front stage plus a subwoofer with two channels bridged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow much power does it give bridged?\u003c\/b\u003e2 × 2400 W RMS on a 2 ohm bridged load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e1 ohm per channel in four-channel mode, 2 ohm bridged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDo I need to upgrade the electrical system?\u003c\/b\u003eAt this power level, in most cars yes: a healthy battery, a strong alternator and a generous cable section. Below 9 V the amplifier protects itself.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich filters does it have?\u003c\/b\u003eHigh-pass 15 Hz – 6 kHz, low-pass 50 Hz – 2 kHz and a 0 – 12 dB bass boost at 50 Hz.\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\":\"Can the SP-1200.4D drive a complete car audio system?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: two front and two rear speakers on the four channels, or a front stage plus a subwoofer with two channels bridged.\"}},{\"@type\":\"Question\",\"name\":\"How much power does the SP-1200.4D give bridged?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"2 x 2400 W RMS on a 2 ohm bridged load.\"}},{\"@type\":\"Question\",\"name\":\"What is the minimum impedance of the SP-1200.4D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"1 ohm per channel in four-channel mode, 2 ohm bridged.\"}},{\"@type\":\"Question\",\"name\":\"Does the SP-1200.4D need an upgraded electrical system?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"At this power level, in most cars yes: a healthy battery, a strong alternator and a generous cable section. The amplifier works between 9 V and 16 V and protects itself below 9 V.\"}},{\"@type\":\"Question\",\"name\":\"Which filters does the SP-1200.4D have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"High-pass 15 Hz to 6 kHz, low-pass 50 Hz to 2 kHz and a 0 to 12 dB bass boost at 50 Hz.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858388861271,"sku":"40103","price":699.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_1a3261b1-2bc6-497f-b40b-bd0ba7caa068.webp?v=1771937489"},{"product_id":"copy-of-sp-1200-4d-1-ohm","title":"SP-600.4D - @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\"\u003e4 channels · class D · stable to 1 ohm\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e4 × 600 W RMS.\u003cbr\u003e\u003cem\u003eOne amplifier, the whole system.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eFour channels with real power on each one, stable down to 1 ohm: two front and two rear speakers driven properly, or two channels bridged onto a subwoofer while the other two keep the front stage. One amplifier instead of two.\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 × 4 · 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 2 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e600\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 1 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 CONTINUOUS RMS ONLY\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e BRIDGEABLE\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\u003e4 CH · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 33%;\"\u003e200 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e4 CH · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e300 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e4 CH · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e600 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · PER CHANNEL · MINIMUM LOAD 1 Ω PER CHANNEL\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\u003eThe whole system on one chassis\u003c\/b\u003e\n\u003cp\u003eTwo front and two rear speakers, driven with real RMS power. One power run, one ground, one remote: less wiring in the car and less to go wrong.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOr front stage plus subwoofer\u003c\/b\u003e\n\u003cp\u003eBridge two channels onto a subwoofer — 2 × 1200 W RMS at 2 ohm bridged — and keep the other two for the front speakers. A complete system with a single amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eStable down to 1 ohm\u003c\/b\u003e\n\u003cp\u003eEach channel holds its rated power down to 1 ohm, so low-impedance pairs and demanding midbass loads are not a problem.\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, with a temperature-driven fan. It works between 9 V 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=\"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 AMPLIFIERS · USER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eThe general SP Audio amplifier 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-600.4D-Manual-EN-2026.pdf?v=1790452545\" 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-600.4D @1 ohm is sold as a single unit, packed for transport. Plan the speaker loads first: four channels at 1, 2 or 4 ohm, or two of them bridged onto a subwoofer.\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 PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 200 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBridged, 2 ohm\u003c\/td\u003e\n\u003ctd\u003e2 × 1200 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm per 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\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, 4 channels\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 Hz – 6 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e50 Hz – 2 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\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-8cm-150-watt-rms\"\u003e\u003csmall\u003eMIDRANGE 8\" \/ 20 CM\u003c\/small\u003e\u003cstrong\u003eSP 8CM — 150 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\/kit-cable-4-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 4 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\u003eInline main fuse within 20 cm of the battery\u003c\/b\u003e, sized to the cable, and a ground point on bare metal. 4 AWG is the recommended cable for the battery run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRespect the minimum load: 1 ohm per channel.\u003c\/b\u003e Bridged, do not go below 2 ohm. A lower impedance triggers the protection and, if repeated, damages the output stage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the filters before you set the gain.\u003c\/b\u003e High-pass on the front and rear channels, low-pass on the bridged pair if it drives a subwoofer: it protects the speakers and cleans up the sound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e12 V systems only\u003c\/b\u003e, negative ground, supply between 9 V and 16 V, with air around the amplifier for the fan. 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\u003eCan it drive a complete system?\u003c\/b\u003eYes: two front and two rear speakers on the four channels, or a front stage plus a subwoofer with two channels bridged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow much power does it give bridged?\u003c\/b\u003e2 × 1200 W RMS on a 2 ohm bridged load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e1 ohm per channel in four-channel mode, 2 ohm bridged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich 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\u003eWhich filters does it have?\u003c\/b\u003eHigh-pass 15 Hz – 6 kHz, low-pass 50 Hz – 2 kHz and a 0 – 12 dB bass boost at 50 Hz.\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\":\"Can the SP-600.4D drive a complete car audio system?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: two front and two rear speakers on the four channels, or a front stage plus a subwoofer with two channels bridged.\"}},{\"@type\":\"Question\",\"name\":\"How much power does the SP-600.4D give bridged?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"2 x 1200 W RMS on a 2 ohm bridged load.\"}},{\"@type\":\"Question\",\"name\":\"What is the minimum impedance of the SP-600.4D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"1 ohm per channel in four-channel mode, 2 ohm bridged.\"}},{\"@type\":\"Question\",\"name\":\"Which power cable and fuse does the SP-600.4D 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.\"}},{\"@type\":\"Question\",\"name\":\"Which filters does the SP-600.4D have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"High-pass 15 Hz to 6 kHz, low-pass 50 Hz to 2 kHz and a 0 to 12 dB bass boost at 50 Hz.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858390237527,"sku":"40102","price":449.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_13f83e2c-c462-45b3-b6c2-5a0d68321b95.webp?v=1771937429"},{"product_id":"copy-of-sp-600-4d-1-ohm","title":"SP-300.4D - @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\"\u003e4 channels · class D · stable to 1 ohm\u003c\/span\u003e\n\u003ch2 class=\"big d\"\u003e4 × 300 W RMS.\u003cbr\u003e\u003cem\u003eOne amplifier, the whole system.\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cp class=\"sub\"\u003eFour channels, stable down to 1 ohm per channel: two front and two rear speakers driven properly, or two channels bridged onto a subwoofer while the other two keep the front stage. One amplifier instead of two, and one power run instead of two.\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\u003e100\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 4 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e150\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 2 Ω\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e300\u003ci\u003eW\u003c\/i\u003e\u003c\/b\u003e\u003cspan\u003eRMS × 4 · 1 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 CONTINUOUS RMS ONLY\u003c\/span\u003e\u003cspan\u003e\u003cb\u003e✓\u003c\/b\u003e BRIDGEABLE\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\u003e4 CH · 4 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 33%;\"\u003e100 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e4 CH · 2 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil\" style=\"width: 50%;\"\u003e150 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bar\"\u003e\n\u003cspan\u003e4 CH · 1 Ω\u003c\/span\u003e\n\u003cdiv class=\"trk\"\u003e\n\u003cdiv class=\"fil mx\" style=\"width: 100%;\"\u003e300 W × 4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"foot\"\u003eRMS @ 14.4 V · CONTINUOUS POWER, NOT BURST · PER CHANNEL · MINIMUM LOAD 1 Ω PER CHANNEL\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\u003eThe whole system on one chassis\u003c\/b\u003e\n\u003cp\u003eTwo front and two rear speakers, driven with real RMS power. One power run, one ground, one remote: less wiring in the car and less to go wrong.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eOr front stage plus subwoofer\u003c\/b\u003e\n\u003cp\u003eBridge two channels onto a subwoofer — 2 × 600 W RMS at 2 ohm bridged — and keep the other two for the front speakers. A complete system with a single amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cb\u003eStable down to 1 ohm\u003c\/b\u003e\n\u003cp\u003eEach channel holds its rated power down to 1 ohm, so low-impedance pairs and demanding midbass loads are not a problem.\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, with a temperature-driven fan. It works between 9 V 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=\"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 AMPLIFIERS · USER MANUAL (PDF)\u003c\/div\u003e\n\u003cp\u003eThe general SP Audio amplifier 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-300.4D-Manual-EN-2026.pdf?v=1790452545\" 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-300.4D @1 ohm is sold as a single unit, packed for transport. Plan the speaker loads first: four channels at 1, 2 or 4 ohm, or two of them bridged onto a subwoofer.\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 PER CHANNEL — RMS @ 14.4 V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 100 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 150 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 ohm\u003c\/td\u003e\n\u003ctd\u003e4 × 300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBridged, 2 ohm\u003c\/td\u003e\n\u003ctd\u003e2 × 600 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum load\u003c\/td\u003e\n\u003ctd\u003e1 ohm per 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\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, 4 channels\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 Hz – 6 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-pass filter (LPF)\u003c\/td\u003e\n\u003ctd\u003e50 Hz – 2 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\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-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-8cm-150-watt-rms\"\u003e\u003csmall\u003eMIDRANGE 8\" \/ 20 CM\u003c\/small\u003e\u003cstrong\u003eSP 8CM — 150 W RMS\u003c\/strong\u003e\u003c\/a\u003e\u003ca href=\"\/en\/products\/kit-cable-4-awg\"\u003e\u003csmall\u003eRECOMMENDED CABLE\u003c\/small\u003e\u003cstrong\u003eSP KIT CABLE 4 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\u003eInline main fuse within 20 cm of the battery\u003c\/b\u003e, sized to the cable, and a ground point on bare metal. 4 AWG is the recommended cable for the battery run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRespect the minimum load: 1 ohm per channel.\u003c\/b\u003e Bridged, do not go below 2 ohm. A lower impedance triggers the protection and, if repeated, damages the output stage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSet the filters before you set the gain.\u003c\/b\u003e High-pass on the front and rear channels, low-pass on the bridged pair if it drives a subwoofer: it protects the speakers and cleans up the sound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e12 V systems only\u003c\/b\u003e, negative ground, supply between 9 V and 16 V, with air around the amplifier for the fan. 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\u003eCan it drive a complete system?\u003c\/b\u003eYes: two front and two rear speakers on the four channels, or a front stage plus a subwoofer with two channels bridged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eHow much power does it give bridged?\u003c\/b\u003e2 × 600 W RMS on a 2 ohm bridged load.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhat is the minimum impedance?\u003c\/b\u003e1 ohm per channel in four-channel mode, 2 ohm bridged.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eWhich 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\u003eWhich filters does it have?\u003c\/b\u003eHigh-pass 15 Hz – 6 kHz, low-pass 50 Hz – 2 kHz and a 0 – 12 dB bass boost at 50 Hz.\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\":\"Can the SP-300.4D drive a complete car audio system?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes: two front and two rear speakers on the four channels, or a front stage plus a subwoofer with two channels bridged.\"}},{\"@type\":\"Question\",\"name\":\"How much power does the SP-300.4D give bridged?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"2 x 600 W RMS on a 2 ohm bridged load.\"}},{\"@type\":\"Question\",\"name\":\"What is the minimum impedance of the SP-300.4D?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"1 ohm per channel in four-channel mode, 2 ohm bridged.\"}},{\"@type\":\"Question\",\"name\":\"Which power cable and fuse does the SP-300.4D 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.\"}},{\"@type\":\"Question\",\"name\":\"Which filters does the SP-300.4D have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"High-pass 15 Hz to 6 kHz, low-pass 50 Hz to 2 kHz and a 0 to 12 dB bass boost at 50 Hz.\"}}]}\u003c\/script\u003e\n\u003c\/div\u003e","brand":"spaudio","offers":[{"title":"Default Title","offer_id":47858390958423,"sku":"40101","price":339.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/files\/1_c48d8b6d-e2f6-4625-8960-5d07e36f57c6.webp?v=1771937454"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0645\/6829\/5636\/collections\/AMP_4CH.webp?v=1771658636","url":"https:\/\/spaudio.com.mx\/en\/collections\/amplifier-4-channel-new.oembed","provider":"spaudio","version":"1.0","type":"link"}