JL Audio MX280/4

Discover the MX280/4, the 4-channel amplifier from JL Audio. This first-class amplifier impresses with impressive features, embedded in a compact aluminum housing. Take advantage of the innovative NexD™ high-speed switching design, which delivers clean power without straining your charging system. The MX280/4 is corrosion-resistant and IPX7 waterproof and offers you the flexibility between high and low input voltage levels. With a solid 50W x 4 at 4 ohms and the possibility of full bridging, it is the perfect upgrade for any sound system.

• 4-channel full-range amplifier in Class D, 70W x 4 @ 2 Ω / 50 W x 4 @ 4 Ω - 14.4V
  
• The MX280/4 4-channel amplifier uses JL's high-speed NexD™ switching design to deliver clean power without stressing the charging systems.
• Its tiny cast aluminum housing is highly corrosion-resistant and IPX7 waterproof.
  
• The MX280/4 produces a solid 50W x 4 into 4 ohms (14.4V, 1% THD) and is fully bridgeable so it can be used as a 3-channel amplifier or as a 2-channel amplifier with 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 to high-power speaker level signals.
  
• This amplifier features a durable powder-coated finish, a sealed control cover, and stainless steel hardware for long-lasting durability.

• @ 4 Ω : 50 W RMS x 4
• @ 2 Ω : 70 W RMS x 4
• Bridged @ 4Ω : 140 W RMS x 2

• @ 4 Ω : 36 W RMS x 4
• @ 2 Ω : 52 W RMS x 4
• Bridged @ 4Ω : 100 W RMS x 2

• Frequency response: 20 Hz - 20 kHz (+0, -1dB)
  
• S/N ratio, based on the highest rated power: >89.5 dB below rated power (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: <1% @ 2 Ω per Ch.
  
• Input voltage range @ RCA inputs : switchable from 250 mV - 4 V RMS (low) to 750 mV - 15 V RMS (high)
  
• Minimum cable diameter for copper power/ground wire: 8 AWG wire
  Fuse rating: 35 A (AFS, AGU or MaxiFuse™)

• Filter mode: low-pass or high-pass
  
• Filter slope: 12 dB/octave
  
• Filter frequency range: 35 Hz - 300 Hz
  
• Calibrated filter frequency potentiometer: Yes
  
• Filter defeat function: Yes
  
• Remote control: No
• Channel input mode switch : Yes (2/3/4 channel)
  
• Pass-through preamp output : None

• Height (H) : 1.77 inches / 45 mm
  
• Width (W): 220 mm / 8.66 inches
  
• Depth (D) : 3.09 in / 78.5 mm
  
• Net weight: 3.18 lb / 1.44 kg