Art:

• MX 280W 4-channel full range amplifier in Class D

Features:

• 4-channel full-range amplifier in Class D, 70 W 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 load systems.
• Its tiny cast aluminum enclosure 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 rugged powder-coated finish, a sealed cover for the controls, and stainless steel hardware for long life.

Rated continuous power (RMS) at 14.4 V:

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

Rated continuous power (RMS) at 12.5 V:

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

General Specifications:

• Frequency response : 20 Hz - 20 kHz (+0, -1dB)
  
• S/N ratio, referenced to the highest rated power : >89.5 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
  
• Attenuation factor @ 4 Ω : >60 / 50 Hz
  
• Attenuation factor @ 2 Ω : >30/ 50 Hz
  
• THD+N @ nominal 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™)

Signal processing:

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

Physical Specifications:

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