{"product_id":"ds18-nxl-x850-4d-marine-amplifier","title":"DS18 NXL-X850.4D 4-Channel Marine Amplifier","description":"\u003cdiv\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003ePower multiple marine speakers from one amplifier with the DS18 NXL-X850.4D 4-channel marine amplifier. Its Class D design delivers 300W RMS per channel at 2 ohms or 200W RMS per channel at 4 ohms.\u003c\/p\u003e \u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour amplified channels:\u003c\/strong\u003e Run multiple speakers from one unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable crossover:\u003c\/strong\u003e Choose HPF, Full, or LPF to match your installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridgeable channels:\u003c\/strong\u003e Bridged output is rated at 2 x 600W RMS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection features:\u003c\/strong\u003e Thermal, overload, short-circuit output, and voltage input protection help guard the amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus indicators:\u003c\/strong\u003e Power, protection, and clip LEDs make operating status visible.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Watts (Peak)\u003c\/th\u003e\n\u003ctd\u003e2400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRMS Power @ 4 ohm\u003c\/th\u003e\n\u003ctd\u003e4 x 200W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRMS Power @ 2 ohm\u003c\/th\u003e\n\u003ctd\u003e4 x 300W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower @ 4 ohm Bridge\u003c\/th\u003e\n\u003ctd\u003e2 x 600W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response\u003c\/th\u003e\n\u003ctd\u003e10Hz-20KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal to Noise Ratio 1W@4Ω\u003c\/th\u003e\n\u003ctd\u003e\u0026gt; 83dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEfficiency @ 4ohm\u003c\/th\u003e\n\u003ctd\u003e0.83\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Impedance\u003c\/th\u003e\n\u003ctd\u003e20KΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChannel Separation\u003c\/th\u003e\n\u003ctd\u003e60dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Harmonic Distortion (THD)\u003c\/th\u003e\n\u003ctd\u003e\u0026lt; 0.04%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLow Level Input Range\u003c\/th\u003e\n\u003ctd\u003e200mV-5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSelectable X-Over\u003c\/th\u003e\n\u003ctd\u003eYes (HPF\/Full\/LPF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eX-Over Filter Range\u003c\/th\u003e\n\u003ctd\u003e40Hz-2KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBass Boost Range\u003c\/th\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBass Boost Frequency\u003c\/th\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInfrasonic Filter\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePhase Selector\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmplifier Class\u003c\/th\u003e\n\u003ctd\u003eDigital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmplifier Type\u003c\/th\u003e\n\u003ctd\u003eStereo Full Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Channels\u003c\/th\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum Impedance\u003c\/th\u003e\n\u003ctd\u003e2 Ohms (Stereo) \/ 4 Ohm (Bridge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLed Indicators\u003c\/th\u003e\n\u003ctd\u003ePower \/ Protection \/ Clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Input Size\u003c\/th\u003e\n\u003ctd\u003e8GA Tinned OFC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFuse Size\u003c\/th\u003e\n\u003ctd\u003e2 x 50A (100A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThermal Protection\u003c\/th\u003e\n\u003ctd\u003eYes (78°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOver-Load Protection\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShort Circuit Output Protection\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage Input Protection\u003c\/th\u003e\n\u003ctd\u003eYes (7-16V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBody Color \/ Finish\u003c\/th\u003e\n\u003ctd\u003eBlack Brushed Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Length\u003c\/th\u003e\n\u003ctd\u003e11.8\" \/ 301mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Wide\u003c\/th\u003e\n\u003ctd\u003e4.4\" \/ 112mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall Height\u003c\/th\u003e\n\u003ctd\u003e1.77\" \/ 45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeatsink Length\u003c\/th\u003e\n\u003ctd\u003e10.2\" \/ 261mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGross Single Unit Weight\u003c\/th\u003e\n\u003ctd\u003e2.4kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e \u003ch2\u003eWhy Choose This Product?\u003c\/h2\u003e\n\u003cp\u003eThe NXL-X850.4D gives you four channels in one marine amplifier, with published power ratings for both 2-ohm and 4-ohm loads. Its selectable HPF, Full, and LPF crossover settings let you choose an option suited to your speaker setup.\u003c\/p\u003e\n\u003cp\u003eUse the per-channel ratings when planning a stereo installation, or consider the listed bridged rating when configuring bridged channels. Match speaker impedance and crossover settings to your installation.\u003c\/p\u003e \u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eCheck the amplifier’s mounting dimensions, wiring, and fuse requirements before installation. Follow the manufacturer’s instructions and keep connections protected from water. A marine rating does not replace proper installation or permit intentional submersion.\u003c\/p\u003e \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow much power does the DS18 NXL-X850.4D provide?\u003c\/h3\u003e\n\u003cp\u003eIt is rated at 4 x 200W RMS at 4 ohms and 4 x 300W RMS at 2 ohms. Bridged output is rated at 2 x 600W RMS at 4 ohms.\u003c\/p\u003e \u003ch3\u003eWhat speaker impedance does it support?\u003c\/h3\u003e\n\u003cp\u003eMinimum impedance is 2 ohms in stereo or 4 ohms when bridged. Match the speaker load to the configuration you plan to use.\u003c\/p\u003e \u003ch3\u003eCan I adjust the crossover setting?\u003c\/h3\u003e\n\u003cp\u003eYes. Select HPF, Full, or LPF, with a crossover filter range of 40Hz-2KHz.\u003c\/p\u003e \u003ch3\u003eWhat should I check before installing it?\u003c\/h3\u003e\n\u003cp\u003eCheck the 11.8\" \/ 301mm length, 4.4\" \/ 112mm width, and 1.77\" \/ 45mm height, along with wiring and fuse requirements.\u003c\/p\u003e \u003ch2\u003eExplore More\u003c\/h2\u003e\n\u003cp\u003eShop at 12 Volt Outlet for the DS18 NXL-X850.4D. Want to learn more about DS18? Explore our \u003ca href=\"https:\/\/www.12voltoutlet.com\/pages\/ds18\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDS18 brand profile\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"DS18","offers":[{"title":"Default Title","offer_id":67698589827300,"sku":"NXL-X850.4D","price":649.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/upload-1792551939629.jpg?v=1792708819","url":"https:\/\/www.12voltoutlet.com\/products\/ds18-nxl-x850-4d-marine-amplifier","provider":"12 Volt Outlet","version":"1.0","type":"link"}