{"product_id":"ds18-nxl-m4-marine-amplifier","title":"DS18 NXL-M4 4-Channel Marine Amplifier","description":"\u003cdiv\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003ePower four speakers from one marine amplifier with the DS18 NXL-M4 4-channel marine amplifier. It delivers 230W RMS per channel at 2 ohms or 150W RMS per channel at 4 ohms, with selectable crossover settings to help match your installation.\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 Power multiple speakers from a single amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable crossover:\u003c\/strong\u003e Choose HPF, LPF, or FULL mode, with a filter range of 40Hz–2KHz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo input options:\u003c\/strong\u003e Use low-level RCA or four-channel speaker-level input, and select 2-channel or 4-channel input mode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP55 water-splash rating:\u003c\/strong\u003e The rating is for water splashing and does not permit intentional submersion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtected, UV-compliant design:\u003c\/strong\u003e The amplifier has a coated PCB, UV protection, and listed overload, thermal, and electrical protections.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Watts (Peak)\u003c\/td\u003e\n\u003ctd\u003e1800W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 4 ohm\u003c\/td\u003e\n\u003ctd\u003e4 x 150W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 2 ohm\u003c\/td\u003e\n\u003ctd\u003e4 x 230W RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power @ 4 ohm Bridge\u003c\/td\u003e\n\u003ctd\u003e2 x 440W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20Hz - 20KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal to Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;90dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency @ 4ohm\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Separation\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;55dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion (THD)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Level Input Range\u003c\/td\u003e\n\u003ctd\u003e0.2V-6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Level Input\u003c\/td\u003e\n\u003ctd\u003eYes: ≥5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelectable X-Over\u003c\/td\u003e\n\u003ctd\u003eHPF\/LPF\/FULL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eX-Over Filter Range\u003c\/td\u003e\n\u003ctd\u003e40Hz - 2KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass Boost Range\u003c\/td\u003e\n\u003ctd\u003e0-12dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass Boost Frequency\u003c\/td\u003e\n\u003ctd\u003e45Hz ±5Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase Selector\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Class\u003c\/td\u003e\n\u003ctd\u003eDigital (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Type\u003c\/td\u003e\n\u003ctd\u003eStereo Full Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e4 Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Impedance\u003c\/td\u003e\n\u003ctd\u003e2 ohm (Stereo) \/ 4 ohm (Bridge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLed Indicator\u003c\/td\u003e\n\u003ctd\u003eClipping \/ Protect \/ Power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input Terminal Size\u003c\/td\u003e\n\u003ctd\u003e4 Ga\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Size\u003c\/td\u003e\n\u003ctd\u003e70A (2x35A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOver-Load Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Output Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort Circuit Output Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Input Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClipping Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Color \/ Finish\u003c\/td\u003e\n\u003ctd\u003eGray+White \/ Aluminum+ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Resistant Rated\u003c\/td\u003e\n\u003ctd\u003eYes, IP55 (Water Splashing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Layout Design\u003c\/td\u003e\n\u003ctd\u003e4 Layers \/ Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRCA Output\u003c\/td\u003e\n\u003ctd\u003eYes, 2 CH (Left \/ Right)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Compliant\u003c\/td\u003e\n\u003ctd\u003eYes, UV Protected and PCB Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sum Selector\u003c\/td\u003e\n\u003ctd\u003eYes, 2Ch or 4Ch Input Mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTiffany Style RCA\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh Level Input\u003c\/td\u003e\n\u003ctd\u003eYes, 4ch Speaker level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel Hardware\u003c\/td\u003e\n\u003ctd\u003eYes, (Screws)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotenciometers\u003c\/td\u003e\n\u003ctd\u003eHigh Quality Metal Knob\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemote Level Control\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e9.6\" \/ 245mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Wide\u003c\/td\u003e\n\u003ctd\u003e4.5\" \/ 116mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Height\u003c\/td\u003e\n\u003ctd\u003e1.7\" \/ 43mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeatsink Length\u003c\/td\u003e\n\u003ctd\u003e8.6\" \/ 220mm\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-M4 combines four-channel amplification with selectable input and crossover options. Its published power ratings vary by speaker impedance, so you can use the ratings to plan around your system’s speaker loads. The 2-channel or 4-channel input mode offers a choice in how the signal is supplied.\u003c\/p\u003e\n\u003cp\u003eIts IP55 water-splash rating, UV protection, and coated PCB are relevant design details for marine installations. The rating does not make the amplifier suitable for intentional submersion.\u003c\/p\u003e \u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eCheck the mounting space against the amplifier’s overall dimensions and heatsink length. Plan wiring and the listed 70A (2x35A) fuse requirement before installation.\u003c\/p\u003e\n\u003cp\u003eMatch speaker impedance to the operating mode: the minimum is 2 ohm in stereo or 4 ohm bridged. Set crossover options to suit your installation, and follow the manufacturer instructions. Keep connections protected from water; the IP55 rating does not permit intentional submersion.\u003c\/p\u003e \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow much RMS power does the DS18 NXL-M4 deliver?\u003c\/h3\u003e\n\u003cp\u003eIt is rated at 4 x 150W RMS at 4 ohms and 4 x 230W RMS at 2 ohms. Bridged output is listed as 2 x 440W at 4 ohms.\u003c\/p\u003e \u003ch3\u003eWhat is the minimum speaker impedance?\u003c\/h3\u003e\n\u003cp\u003eThe listed minimum is 2 ohm for stereo operation and 4 ohm when bridged. Match the connected speakers to the selected configuration.\u003c\/p\u003e \u003ch3\u003eCan I use RCA or speaker-level input?\u003c\/h3\u003e\n\u003cp\u003eYes. The specifications list low-level input from 0.2V-6V and four-channel speaker-level input. The input selector supports 2-channel or 4-channel input mode.\u003c\/p\u003e \u003ch3\u003eIs this amplifier waterproof?\u003c\/h3\u003e\n\u003cp\u003eIt is rated IP55 for water splashing. This rating does not permit intentional submersion, so protect connections during installation.\u003c\/p\u003e \u003ch3\u003eWill it fit my installation location?\u003c\/h3\u003e\n\u003cp\u003eCompare the available mounting space with its 9.6\" \/ 245mm length, 4.5\" \/ 116mm width, and 1.7\" \/ 43mm height. The heatsink length is 8.6\" \/ 220mm.\u003c\/p\u003e \u003ch2\u003eExplore More\u003c\/h2\u003e\n\u003cp\u003eShop the DS18 NXL-M4 at 12 Volt Outlet. 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":67698578882788,"sku":"NXL-M4","price":474.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/upload-1792551666362.jpg?v=1792708545","url":"https:\/\/www.12voltoutlet.com\/products\/ds18-nxl-m4-marine-amplifier","provider":"12 Volt Outlet","version":"1.0","type":"link"}