JL Audio MX280/4 : 4ch x 50W/70W Marine Grade Amplifier @ 4Ω/2Ω

MX-Series 4-Channel Class-D Marine-Grade Amplifier, 70-Watts x 4ch @ 2-Ohm or 50-Watts x 4ch @ 4-Ohm. Engineered specifically for powersports applications, the 4-channel MX280/4 amplifier employs JL's high-speed NexD™ switching design to deliver plenty of clean power, without straining charging systems. Its tiny, cast aluminum chassis is highly resistant to corrosion, with an IPX7 water-resistance rating, making it perfect for motorcycles, ATV’s or other utility vehicles. Generating a solid 50W x 4 into 4 ohms (14.4V, 1% THD), the MX280/4 is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a potent 140W x 2 into 4 ohms. Other features include independent front and rear crossovers with selectable full-range, high-pass or low-pass filter controls and a dual-range input section that accepts a wide range of input voltage levels, from line-level all the way to high-power speaker level signals. This amplifier features a black powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability. Specifications Frequency Response 20 Hz - 20 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >89.5 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >68 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >60 / 50 Hz Damping Factor @ 2 Ω >30 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs Switchable from 250 mV - 4 V RMS (Low) to 750 mV - 15 V RMS (High) Min.Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 35 A (AFS, AGU or MaxiFuse™) Output Specifications @ 4 Ω 50 W RMS x 4 @ 2 Ω 70 W RMS x 4 Bridged @ 4Ω 140 W RMS x 2 Documentation JL Audio MX280/4 Manual