JL AUDIO (MX280/4) 4-CHANNEL CLASS D FULL-RANGE AMPLIFIER, 50 WATTS X 4 @ 4 OHM / 70 WATTS X 4 @ 2 OHM - 14.4V OVERVIEW: Engineered specifically for powersports applications, the 4-channel MX280/4 amplifier employs our 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 rugged powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability. RATED CONTINUOUS (RMS) POWER @ 14.4 V @ 4 Ω : 50 W RMS x 4 @ 2 Ω : 70 W RMS x 4 Bridged @ 4 Ω : 140 W RMS x 2 RATED CONTINUOUS (RMS) POWER @ 12.5 V @ 4 Ω : 36 W RMS x 4 @ 2 Ω : 52 W RMS x 4 Bridged @ 4 Ω : 100 W RMS x 2 GENERAL 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 :
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