JL AUDIO M600/1 Monoblock Class D Subwoofer Amplifier

This amplifier is excellent for a simple audiophile-grade, subwoofer system.

Powerful and versatile, this subwoofer amplifier from JL Audio delivers 600 watts of continuous power into a 2 Ohm load. Built with JL’s patented NexD™ ultra-high-speed switching design, this Class D amp operates with extremely low distortion and exceptional efficiency.

NexD™ Technology: NexD™ is advanced technology allowing for full bandwidth Class D operation with low distortion and high efficiency in a small chassis.

Built for the marine environment: Stainless steel hardware, a white/gray powder-coat finish, and a gasketed cover for the controls provide durability and longevity on your boat.

Key Features

• NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact amplifier designs
• JL Audio’s exclusive Advanced Rollback Protection circuit monitors the amplifier’s thermal condition and adjusts amplifier operation to eliminate annoying amplifier shut-down events
• Monoblock Class D 
• Delivers 600 W x 1 @ 2 Ω / 400 W x 1 @ 4 Ω – 14.4V
• Patented Technology: Single Cycle Control. (U.S. Patent #6,084,450*)
• Inputs: Differential-balanced with RCA jack inputs
• On-board Crossover: State-variable, 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley with continuously variable cutoff frequency selection from 50 – 500 Hz (defeatable).
• Preamp Output: Buffered pass-through type
• Infrasonic Filter: 24 dB/octave Butterworth @ 30 Hz, defeatable
• Dual mono subwoofer output connections: Accept up to 12 AWG wire
• +12V and Ground connections: Accept up to 4 AWG wire

General Specifications

• Rated Continuous (RMS) Power @ 14.4 V
  @ 4 Ω 400 W RMS x 1
  @ 2 Ω 600 W RMS x 1
• Rated Continuous (RMS) Power @ 12.5 V
  @ 4 Ω 300 W RMS x 1
  @ 2 Ω 500 W RMS x 1
• Frequency Response 7 Hz – 500 Hz (+0, -1dB)
• S/N Ratio, referred to highest rated power >87 dB below rated power (A-weighted, 20 Hz – 20 kHz noise bandwidth)
• S/N Ratio, referred to 1 W >59 dB (A-weighted, 20 Hz – 20 kHz noise bandwidth)
• Damping Factor @ 4 Ω >1000 / 50 Hz
• Damping Factor @ 2 Ω >500 / 50 Hz
• THD+N @ Rated Power <1% @ 2 Ω per Ch.
• Input Voltage Range @ RCA Inputs 100 mV – 4 V RMS
• Min Copper Power / Ground Wire Gauge 4 AWG wire
• Fuse Rating 50 A (AFS, AGU or MaxiFuse™)

Signal Processing

• Filter Modes Low-Pass only
• Filter Slope (dB/Octave) 12/24 dB
• Filter Frequency Range 50-500 Hz
• Detented, Calibrated Filter Freq. Potentiometers Yes
• Filter Defeatable? Yes