{"product_id":"jl-audio-ap300-1-300w-rms-class-d-monoblock-marine-subwoofer-amplifier-ignition-protected-ip67-010-03428-00","title":"JL Audio AP300\/1 300W RMS Class D Monoblock Marine Subwoofer Amplifier, Ignition-Protected, IP67 (010-03428-00)","description":"\u003cp\u003eAdd powerful, controlled bass to your marine audio system without giving up valuable installation space. The JL Audio AP300\/1 is an ultra-compact monoblock Class D amplifier designed specifically for a marine subwoofer. It offers the efficiency of Class D amplification, an integrated LCD setup interface, and an ignition-protected housing engineered for marine environments.\u003c\/p\u003e\u003cp\u003eAt a 14.4V supply, the AP300\/1 provides 200W RMS into 4 ohms or 350W RMS into 2 ohms, with a manufacturer-described 300W power class. Selectable input sensitivity, adjustable low-pass filtering, bass boost, and a defeatable infrasonic filter allow the bass system to be tailored to its installation. When paired with a compatible Fusion DSP stereo, Easy Tune profiles can streamline system setup through the Fusion Audio app.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Subwoofer Amplification:\u003c\/strong\u003e A single Class D channel intended to power a compatible marine subwoofer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 350W RMS at 2 Ohms:\u003c\/strong\u003e Also delivers 200W RMS at 4 ohms, measured at 14.4V DC with less than 1% THD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In LCD Controls:\u003c\/strong\u003e Integrated screen and buttons allow setup without conventional exposed adjustment knobs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP67-Rated Chassis:\u003c\/strong\u003e Water- and dust-resistant amplifier housing; rating excludes cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Protected:\u003c\/strong\u003e Designed for installations requiring ignition-protected marine electrical equipment, subject to manufacturer guidance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Tune Capable:\u003c\/strong\u003e Supports compatible Fusion DSP stereo and Fusion Audio app tuning profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubwoofer Signal Processing:\u003c\/strong\u003e Adjustable low-pass crossover, bass boost, defeatable infrasonic filter, and output polarity control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Protection:\u003c\/strong\u003e Protection against abnormal input voltage, overheating, and output short circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eGeneral Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Type:\u003c\/strong\u003e Monoblock marine subwoofer amplifier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Class:\u003c\/strong\u003e Class D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 9–16V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Power at 4 Ohms:\u003c\/strong\u003e 200W RMS x 1 (14.4V, \u0026lt;1% THD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Power at 2 Ohms:\u003c\/strong\u003e 350W RMS x 1 (14.4V, \u0026lt;1% THD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 10Hz–500Hz (+0, -1dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e \u0026gt;70dB (A-weighted, referenced to 1W)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Sensitivity:\u003c\/strong\u003e 200mV–2V RMS (Low); 800mV–8V RMS (High)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 20kO (Low sensitivity range); 11kO (High sensitivity range)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby Current:\u003c\/strong\u003e \u0026lt;1mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdle Current:\u003c\/strong\u003e Approximately 700–750mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Fuse Rating:\u003c\/strong\u003e 35A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Fuse Types:\u003c\/strong\u003e AFS, AGU or MaxiFuse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Copper Power\/Ground Wire:\u003c\/strong\u003e 4 AWG (per published specification)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Pass Crossover:\u003c\/strong\u003e 20Hz–500Hz, 12dB\/octave\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBass Boost:\u003c\/strong\u003e 0 to +18dB at 37Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrasonic Filter:\u003c\/strong\u003e 20Hz–50Hz, defeatable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Polarity Switch:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and Dust Rating:\u003c\/strong\u003e IP67 (amplifier chassis only; cables excluded)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -4°F to 149°F (-20°C to 65°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 10.43\" W x 4.90\" D x 1.86\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 3 years\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDesigned for a compatible marine subwoofer and 9–16V DC electrical system. Select a subwoofer load appropriate for the amplifier's supported 2-ohm or 4-ohm output ratings. Easy Tune functionality requires a compatible Fusion DSP-equipped stereo and the Fusion Audio app; other sources may be used with manual amplifier configuration. This monoblock model is not intended to replace a multi-channel full-range speaker amplifier.\u003c\/p\u003e \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cp\u003eUse a correctly rated externally fused power connection, suitable copper cable, and marine-appropriate mounting practices. The amplifier does not have an internal replaceable fuse. Confirm the power\/ground connection requirements and installation clearances in the supplied instructions. The IP67 rating does not extend to exposed cable ends or other connected equipment.\u003c\/p\u003e","brand":"JL Audio","offers":[{"title":"Default Title","offer_id":67896194891864,"sku":"WIN-JLA0100342800","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1091\/8160\/files\/4314252.jpg?v=1792674825","url":"https:\/\/shipsound.com\/products\/jl-audio-ap300-1-300w-rms-class-d-monoblock-marine-subwoofer-amplifier-ignition-protected-ip67-010-03428-00","provider":"ShipSound.com","version":"1.0","type":"link"}