JL Audio MX280/4 4 Ch. Class D Full-Range Marine Amplifier

JL AudioSKU: MX2804


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  • 4-channel amplifier
  • 50 watts RMS x 4 at 4 ohms (70 watts RMS x 4 at 2 ohms) 
  • 140 watts RMS x 2 bridged at 4 ohms (4-ohm stable bridged)
  • Variable low-and high-pass filters (35-300 Hz, 12 dB/octave)
  • Class D amplifier design with NextD switching amp technology
  • IPX6 water-resistance rating
  • Corrosion-resistant cast aluminum chassis
  • Overview

     Engineered specifically for powersports applications, the 4-channel MX280/4 amplifier employs the 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 IPX6 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.



    RMS Power Output (Watts x Channels) – 50 x 4
    Power at 2 Ohms (Watts x Channels) – 70 x 4
    Bridged Power (Watts x Channels) – 140 x 2
    Minimum Impedance Bridged – 4



    Amplifier Class – D
    Low-Pass Crossover Frequency – 35-300 Hz
    Low-Pass Slope (dB/octave) – 12 dB/octave
    High-Pass Crossover Frequency – 35-300 Hz
    High-Pass Slope (dB/octave) – 12 dB/octave
    Fuse Rating – 35
    Speaker Level Inputs – RCA
    Preamp Outputs – No



    Width (inches) – 8-11/16
    Height (inches) – 1-13/16
    Depth (inches) – 3-1/8


    Amplifier Channels

    4 Channel


    Amplifier Class

    Class D


    Amplifier Features

    Speaker Level Inputs


    Amplifier Fuse Rating



    Amplifier RMS

    Up to 60 watts

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