JL AUDIO MX280/4 280 W 4-Channel Class-D Full-Range Amplifier|98405

JL AUDIO 98405, MX280/4, 4-channel Class D Full-Range Amplifier, 50 Watts x 4 @ 4 ohm / 70 Watts x 4 @ 2 ohm – 14.4V

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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 or other utility vehicles. Generating a solid 50 W x 4 into 4 Ohm (14.4 V, 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 140 W x 2 into 4 Ohm. 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.

Additional information

Weight 14 lbs
Item Name

Full-Range Amplifier







280 W

Number of Channels


Load Impedance

2 and 4 Ohm

Signal to Noise Ratio

>89.5 dB Below Rated Power (A-Weighted, 20 Hz to 20 kHz Noise Bandwidth)

Total Harmonic Distortion

<1% at 2 Ohm/Channel

Voltage Rating

250 mV to 4 V RMS (Low) to 750 mV to 15 V RMS (High)

Frequency Response

20 Hz to 20 kHz (+0, -1 dB)

Fuse Rating

35 A

Amplifier Class

Class D


8 AWG Wire


Black Powder Coated

Damping Factor

>30/50 Hz at 2 Ohm, >60/50 Hz at 4 Ohm


3.18 lb