JL Audio :: MHX280/4 :: $206.99

JL Audio MHX280/4

Item# 47712

4 Ch. Class D Full-Range Marine Amplifier, 280 W

Sorry, this product is no longer available.

Engineered specifically for limited-space marine applications, the 4-channel MHX280/4 amplifier employs our high-speed NexD™ switching design to deliver lots of clean power, while being kind to small charging systems. Its ultra-compact, cast aluminum chassis is highly resistant to corrosion, with an IPX6 water-resistance rating, making it ideal for applications where moisture would prohibit use of a conventional 12V amplifier.

Delivering a solid 50W x 4 into 4 ohms (14.4V, 1% THD), the MHX280/4 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 marine amplifier features a white powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment.

Product Features:


  • Rated Continuous (RMS) Power @ 12.5 V: @ 4 O 36 W RMS x 4 / @ 2 O 52 W RMS x 4 / Bridged @ 4O 100 W RMS x 2
  • Rated Continuous (RMS) Power @ 14.4 V: @ 4 O 50 W RMS x 4 / @ 2 O 70 W RMS x 4 / Bridged @ 4O 140 W RMS x 2
  • Damping Factor @ 2 O: >30 / 50 Hz
  • Damping Factor @ 4 O: >60 / 50 Hz
  • Fuse Rating: 35 A (AFS, AGU or MaxiFuse™)
  • Min.Copper Power / Ground Wire Gauge: 8 AWG wire
  • S/N Ratio, referred to 1 W: >70.5 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
  • 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)
  • THD+N @ Rated Power: <1% @ 2 O per Ch.
  • Input Voltage Range @ RCA Inputs: Switchable from 250 mV - 4 V RMS (Low) to 750 mV - 15 V RMS (High)
  • UPC: 699440984034
  • Weight: 10
  • Sku: 98403
  • 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.