{"product_id":"sundown-audio-sdx-100-4-4-channel-weatherproof-amplifier","title":"Sundown Audio SDX-100.4 4-Channel Weatherproof Amplifier","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower\u003c\/strong\u003e — 100W x 4 @ 4Ω, 135W x 4 @ 2Ω, 270W x 2 @ 4Ω bridged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass\u003c\/strong\u003e — Class-D, 4-channel, water-resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters\u003c\/strong\u003e — Variable 12dB HPF\/LPF with x1\/x20 multiplier, bass boost @ 50Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild\u003c\/strong\u003e — Heavy cast aluminum heat sink, removable control cover\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection\u003c\/strong\u003e — Thermal, voltage, speaker short, DC-offset\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis Listing Includes:\u003c\/strong\u003e (1) Sundown Audio SDX-100.4 4-Channel Weatherproof Amplifier\u003c\/p\u003e\n\u003cp\u003eThe water-resistant SDX-100.4 is a compact Class-D amplifier built for cars, UTVs, and open-air vehicles, delivering 100 watts x 4 at 4 ohms, 135 watts x 4 at 2 ohms, or 270 watts x 2 bridged at 4 ohms. Channels 1–2 offer a variable 12dB high-pass filter (15Hz–500Hz or 300Hz–10kHz), while channels 3–4 add variable 12dB high-pass (15Hz–500Hz) and low-pass (30Hz–500Hz or 600Hz–10kHz) filters, all with x1\/x20 frequency multipliers and a variable 12dB bass boost at 50Hz. DC auto-sensing turn-on, a sealed removable control cover, and a robust cast aluminum casing provide easy setup, heat dissipation, and weather protection, backed by thermal, voltage, speaker-short, and DC-offset circuitry. To access audio settings, unscrew the badge with an allen key. Authorized Sundown Audio dealer at JS Ultimate Sounds. Free shipping on orders $99+.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater-resistant Class-D design for powersports and daily drivers\u003c\/li\u003e\n\u003cli\u003eCh. 1–2 variable 12dB high-pass: 15Hz–500Hz or 300Hz–10kHz\u003c\/li\u003e\n\u003cli\u003eCh. 3–4 variable 12dB high-pass (15Hz–500Hz) and low-pass (30Hz–500Hz or 600Hz–10kHz)\u003c\/li\u003e\n\u003cli\u003ex1\/x20 crossover frequency multipliers with variable 12dB bass boost @ 50Hz\u003c\/li\u003e\n\u003cli\u003eHeavy cast aluminum heat sink with removable control cover and optional wired remote\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:35%;\"\u003eRMS @ 4Ω\u003c\/td\u003e\n\u003ctd\u003e100W x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS @ 2Ω\u003c\/td\u003e\n\u003ctd\u003e135W x 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS @ 4Ω Bridged\u003c\/td\u003e\n\u003ctd\u003e270W x 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-Pass Filter (Ch. 1–2)\u003c\/td\u003e\n\u003ctd\u003e15Hz–500Hz or 300Hz–10kHz (12dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-Pass Filter (Ch. 3–4)\u003c\/td\u003e\n\u003ctd\u003e15Hz–500Hz (12dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-Pass Filter (Ch. 3–4)\u003c\/td\u003e\n\u003ctd\u003e30Hz–500Hz or 600Hz–10kHz (12dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrossover Multiplier\u003c\/td\u003e\n\u003ctd\u003ex1\/x20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBass Boost\u003c\/td\u003e\n\u003ctd\u003e12dB @ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeatherproofing\u003c\/td\u003e\n\u003ctd\u003eWater resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eThermal, voltage, speaker short, DC-offset\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Sundown Audio","offers":[{"title":"Default Title","offer_id":66820144070701,"sku":"A-SDX1004","price":349.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/8096\/4909\/files\/sundown-audio-sdx-100-4-4-channel-weatherproof-amplifier-w_087cc631-f27a-4a6a-bcca-848f325464f2.jpg?v=1782679612","url":"https:\/\/www.jsultimatesounds.com\/products\/sundown-audio-sdx-100-4-4-channel-weatherproof-amplifier","provider":"JS Ultimate Sounds","version":"1.0","type":"link"}