JL Audio MX Marine and Powersports 4 Channel Full-Range Amplifier (280 watts) (MX280/4)

PLAY ANYWHERE With efficient NexD™ technology and a water-resistant chassis, MX amplifiers produce loads of clean power and are ideal for applications where moisture cannot be completely avoided. DESIGNED FOR LIMITED SPACE APPLICATIONS SHOCK-RESISTANT, WATER-RESISTANT AND BUILT TOUGH EFFICIENT DESIGN FOR HIGH OUTPUT USES LESS ENERGY COMPLETE SIGNAL PROCESSING SECTIONS ON BOARD EXCEEDS INTERNATIONAL STANDARDS FOR SALT FOG AND UV EXPOSURE 3-YEAR WARRANTY Warranty 3 years Channels Monoblock/3/4 Physical dimensions (Height) 1.77" (45 mm) Physical dimensions (Width) Monoblock (300 W)/4-Channel (280 W): 8.66" (220 mm) Monoblock (500 W)/3/4-Channel (500 W): 9.33" (237 mm) Physical dimensions (Depth) Monoblock (300 W)/4-Channel (280 W): 3.09" (78.5 mm) Monoblock (500 W )/3/4-Channel (500 W): 4.50" (115 mm) Weight 3.18 lbs (1.44 kg) Operating voltage 11-15 VDC Water and dust rating IPX7 Audio Amplifier class Class D Rated continuous (RMS) power (14.4 V input @ 4 Ohm < 1% THD) Monoblock (300 W): 160 W x 1 Monoblock (500 W): 300 W x 1 3-Channel: Main: 75 W x 2/Sub: 250 W x 1 4-Channel (280 W): 50 W x 4/140 W x 2 (Bridged) 4-Channel (500 W): 70 W x 4/250 W x 2 (Bridged) Rated continuous (RMS) power (14.4 V input @ 2 Ohm < 1% THD) Monoblock (300 W): 300 W x 1 Monoblock (500 W): 500 W x 1 3-Channel: Main: 100 W x 2/Sub: 400 W x 1 4-Channel (280 W): 70 W x 4 4-Channel (500 W): 125 W x 4 Rated continuous (RMS) power (12.5 V input @ 4 Ohm < 1% THD) Monoblock (300 W): 160 W x 1 Monoblock (500 W): 250 W x 1 3-Channel: Main: 50 W x 2/Sub: 200 W x 1 4-Channel (280 W): 36 W x 4/100 W x 2 (Bridged) 4-Channel (500 W): 55 W x 4/180 W x 2 (Bridged) Rated continuous (RMS) power (12.5 V input @ 2 Ohm < 1% THD) Monoblock (300 W): 250 W x 1 Monoblock (500 W): 400 W x 1 3-Channel: Main: 80 W x 2/Sub: 300 W x 1 4-Channel (280 W): 52 W x 4 4-Channel (500 W): 90 W x 4 Signal-to-Noise Ratio, referred to highest rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs Monoblock (300 W): > 85 dB Monoblock (500 W): > 97 dB 4-Channel (280 W): > 89.5 dB 4-Channel (500 W): > 88 dB Signal-to-Noise Ratio, referred to highest rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs - Main Channels 3-Channel: > 88 dB Signal-to-Noise Ratio, referred to highest rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs - Subwoofer Channel 3-Channel: > 88 dB Signal-to-Noise Ratio, referred to 1 W (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs Monoblock (300 W): > 64 dB Monoblock (500 W): > 70 dB 4-Channel (280 W): > 68 dB 4-Channel (500 W): > 70.5 dB Signal-to-Noise Ratio, referred to 1 W (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs - Main Channels 3-Channel: > 68 dB Signal-to-Noise Ratio, referred to 1 W (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs - Subwoofer Channel 3-Channel: > 68 dB Damping factor @ 4 Ω Monoblock (300 W): > 120/50 Hz Monoblock (500 W): > 115/50 Hz 4-Channel (280 W): > 60/50 Hz 4-Channel (500 W): > 92/50 Hz Damping factor @ 2 Ω Monoblock (300 W): > 75/50 Hz Monoblock (500 W): > 54/50 Hz 4-Channel (280 W): > 30/50 Hz 4-Channel (500 W): > 43/50 Hz THD+N @ Rated Power Monoblock (300 W/500 W)/4-Channel (280 W): <1% @ 2 Ω per Channel THD+N @ Rated Power: Main Channels <1% @ 2 Ω per Channel THD+N @ Rated Power: Subwoofer Channel <1% @ 2 Ω per Channel Frequency response (+0, -1dB) Monoblock (300 W)/3/4-Channel (280 W/500 W): 20 Hz-20 kHz Monoblock (500 W): 20 Hz-12 kHz Input voltage range @ RCA inputs Monoblock (500 W)/3-Channel: Switchable from 250 mV-4 V RMS (Low) to 580 mV-14 V RMS (High) Monoblock (300 W)/4-Channel (280 W/500 W): Switchable from 250 mV-4 V RMS (Low) to 750 mV-15 V RMS (High) Fuse rating Monoblock (300 W): 30 A Monoblock (500 W)/4-Channel (500 W): 50 A 3-Channel: 60 A 4-Channel (280 W): 35 A Recommended fuse type(s) AFS, AGU or MaxiFuse™ Min. copper power/Ground wire gauge Monoblock (300 W)/4-Channel (280 W): 8 AWG wire Monoblock (500 W)/3/4-Channel (500 W): 4 AWG wire Signal Processing Filter mode(s): Channels 1 & 2 Monoblock (300 W/500 W): Off or Low-Pass only 3/4-Channel (280 W/500W): Off, Low-Pass or High-Pass Filter Slope(s): Channels 1 & 2 Monoblock (300 W)/4-Channel (280 W/500 W): 12 dB/octave Monoblock (500 W): 24 dB/octave Filter frequency range: Channels 1 & 2 Monoblock (300 W): 40 Hz-400 Hz 4-Channel (280 W/500 W): 35 Hz-300 Hz Filter mode(s): Channels 3 & 4 4-Channel (280 W/500 W): Off, Low-Pass or High-Pass Filter Slope(s): Channels 3 & 4 4-Channel (280 W/500 W): 12 dB/octave Filter frequency range: Channels 3 & 4 4-Channel (280 W/500 W): 35 Hz-300 Hz Filter mode(s): Subwoofer Channel 3-Channel: Off or Low-Pass only Filter slope(s): Subwoofer Channel 3-Channel: 12 dB/octave Filter frequency range: Subwoofer Channel 3-Channel: 40 Hz-400 Hz Bass boost EQ (0 to +12 dB @ 45 Hz) Monoblock (300 W/500 W): 0 to +12 dB @ 43 Hz Detented, calibrated filter frequent potentiometers Remote level control Monoblock (300 W/500 W)/3-Channel: Optional (RBC-1) Channel input mode switch 3-Channel: yes (2/4 Channels) 4-Channel (280 W/500 W): yes (2/3/4 Channels) Output polarity switch Monoblock (300 W/500 W)/3-Channel: yes