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JL Audio MX280/4
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Item# 46701 / Condition:  Brand New    Review this product

JL Audio MX280/4 (98405)

4-Channel Class D Full-Range Amplifier, 70 W x 4 @ 2 O / 50 W x 4 @ 4 O - 14.4V

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Save $56.00 | Reg. Price $335.99 In Stock
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What's Included:

  • 4 Self-tapping screws (1" length)
  • 4-Channel marine amplifier with 12" power/signal pigtails (with in-line fuse holder and 35A ATO fuse installed)
  • Spare 35A ATO fuse
  • Owner's Manual

Product Highlights:

  • preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input)
  • 50 watts RMS x 4 at 4 ohms (70 watts RMS x 4 at 2 ohms)
  • Class D amplifier design with NextD™ switching amp technology
  • 140 watts RMS x 2 bridged at 4 ohms (4-ohm stable bridged)
  • 8-11/16"W x 1-13/16"H x 3-1/8"D
  • IPX6 water-resistance rating
  • 4-channel amplifier
  • variable low- and high-pass filters (35-300 Hz, 12 dB/octave)
  • corrosion-resistant cast aluminum chassis
  • fuse rating: 35A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier

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 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.


  • JL Audio MX280/4 Weatherproof Amplifier
  • Class-D Full Range 4-Channel Amplifier
  • RMS Power Rating:
  • 4 ohms: 50 watts x 4 chan.
  • 2 ohms: 70 watts x 4 chan.
  • 1 ohm: N/A
  • Bridged, 4 ohms: 140 watts x 2 chan.
  • Total power output: 280 watts
  • Frequency Response: 20 - 20,000 Hz
  • Total Harmonic Distortion (THD): <1%
  • Signal to Noise Ration: >68 dB
  • Variable high-pass filter: 35 - 300 Hz, 12 dB/octave
  • Variable low-pass filter: 35 - 300 Hz, 12 dB/octave
  • Fuse Rating: 35 A x 1
  • 8 gauge power and ground wiring is recommended for installation.
  • Dimensions: 8.66"W x 3.09"D x 1.77"H
  • CEA-2006 Compliant Amplifier
  • Pulse Width Modulated MOSFET power supply
  • Wired remote bass level control included
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • IPX6 water resistant rating
  • 4/3/2 or Mono channel operation
  • Black powder coat finish
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
  • Input sensitivity:
  • Low level: 250mV - 4V
  • High level: 750mV - 15V
  • UPC: 699440984058
  • Weight: 3
  • Sku: 98405
  • Authorized Internet Dealer
*Warranty: 1 Year Manufacturer warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 30 days from the original date of purchase with proper return authorization. After the 30 day time period, products must be returned to their original manufacturer for the remainder of the manufacturer's warranty period.