Descriptions

About: JL Audio MHD750/1 750W RMS Monoblock Marine Amplifier

ULTRACOMPACT AND ULTRAPOWERFUL

Combining our Single Cycle Control™ and R.I.P.S.™ power supply technologies, MHD amplifiers deliver world-class, full-range fidelity and high-power output from an incredibly small package.

• HIGH-FIDELITY CLASS-D DESIGN DELIVERS SUPERB SONICS
• INTELLIGENTLY OPTIMIZED FOR ALL THE POWER — ALL THE TIME
• FULL SUITE OF STUDIO-GRADE SIGNAL PROCESSING ON BOARD
• UNIQUE DESIGN ADJUSTS OPERATION TO AVOID THERMAL EVENTS
• EXCEEDS INTERNATIONAL STANDARDS FOR SALT FOG AND UV EXPOSURE

SINGLE CYCLE CONTROL

Groundbreaking technology applies output correction more than 400,000 times per second to deliver exceptional audio quality with reduced current draw and heat.

R.I.P.S. TECHNOLOGY

Regulated, Intelligent Power Supply is a tightly controlled design that maintains full power output from 1.5 to 4 ohms per channel and at any supply voltage from 11 to 14.5 volts.

STUDIO-GRADE SIGNAL PROCESSING

Selectable 12 dB/octave (Butterworth) or steep 24 dB/octave (Linkwitz-Riley) filters with calibrated potentiometer to best integrate with subwoofers and component systems.

DIFFERENTIAL-BALANCED INPUTS

A versatile design accepts speaker level signals without a line-output converter; it also delivers outstanding noise rejection while preventing alternator whine and other noises.

ADVANCED ROLLBACK PROTECTION

Innovative circuit design ensures that the amplifier will never shut down as a result of thermal overload and keeps the music playing, even under the most demanding conditions.

BUILT FOR THE ELEMENTS

An all-aluminum, powder-coated housing with marine-grade hardware inhibits corrosion, and a watertight security cover protects all controls from the harshest of seasons.

FUNCTIONAL HIGH-FIDELITY

• POWERFULLY NEAT: All MHD models share the same compact dimensions, making them far easier to place.
• REALSINK™ CHASSIS: The heat sink design requires no fans and permits stacking without losing cooling ability.
• DESIGNED TO FIT: Removable power and speaker plugs aid installations in tight spaces.

Specifications:

• Channels: Monoblock/4/5
• Physical dimensions (Height): 1.93" (49 mm)
• Physical dimensions (Width): 10.74" (273 mm)
• Physical dimensions (Depth): 7.85" (199 mm)
• Weight:
• Monoblock: 6.6 lbs (2.99 kg)
• 5-Channel: 6.85 lbs (3.11 kg)
• Operating voltage:
• 11-14.5 VDC (12 V Models)
• 22-29 VDC (24 V Models)

Audio

• Amplifier class: Class D
• Rated continuous (RMS) power (14.4 V input @ 4 Ohm < 1% THD):
• Monoblock: 750 W x 1
• 4-Channel: 150 W x 4/300 W x 2 (Bridged)
• 5-Channel: Main: 100 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (14.4 V input @ 2 Ohm < 1% THD):
• Monoblock: 750 W x 1
• 4-Channel: 150 W x 4/300 W x 2 (Bridged)
• 5-Channel: Main: 75 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (12.5 V input @ 4 Ohm < 1% THD):
• Monoblock: 750 W x 1
• 4-Channel: 150 W x 4/300 W x 2 (Bridged)
• 5-Channel: Main: 100 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (12.5 V input @ 2 Ohm < 1% THD):
• Monoblock: 750 W x 1
• 4-Channel: 150 W x 4/300 W x 2 (Bridged)
• 5-Channel: Main: 75 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (28.8 V input @ 4 Ohm < 1% THD):
• 4-Channel (24 V): 150 W x 4/300 W x 2 (Bridged)
• 5-Channel (24 V): Main: 100 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (28.8 V input @ 2 Ohm < 1% THD):
• 4-Channel (24 V): 150 W x 4/300 W x 2 (Bridged)
• 5-Channel (24 V): Main: 75 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (25 V input @ 4 Ohm < 1% THD):
• 4-Channel (24 V): 150 W x 4/300 W x 2 (Bridged)
• 5-Channel (24 V): Main: 100 W x 4/Sub: 500 x 1
• Rated continuous (RMS) power (25 V input @ 2 Ohm < 1% THD):
• 4-Channel (24 V): 150 W x 4/300 W x 2 (Bridged)
• 5-Channel (24 V): Main: 75 W x 4/Sub: 500 x 1
• Signal-to-Noise Ratio, referred to highest rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs:
• Monoblock: > 110 dB below rated power
• 4-Channel: > 110 dB
• 5-Channel: > 108.5 dB below rated power
• Signal-to-Noise Ratio, referred to 1 W (A-weighted, 20 Hz - 20 kHz noise bandwidth): Analog Inputs:
• Monoblock: > 88 dB
• 4/5-Channel: > 88.2 dB
• Damping factor @ 4 Ω:
• Monoblock: > 500/50 Hz:
• 4-Channel: > 300/50 Hz
• 5-Channel: > 400/50 Hz
• Damping factor @ 2 Ω:
• Monoblock: > 250/50 Hz:
• 4-Channel: > 150/50 Hz
• 5-Channel: > 200/50 Hz
• THD+N @ Rated Power: Monoblock/4-Channel: < 0.03% @ 4 Ω
• THD+N @ Rated Power: Main Channels: 5-Channel: < 0.03% @ 4 Ω
• THD+N @ Rated Power: Subwoofer Channel 5-Channel: < 0.05% @ 4 Ω
• Frequency response (+0, -1dB):
• Monoblock: 6 Hz-8 kHz
• 4-Channel: 6 Hz-30 kHz
• Frequency response (+0, -1dB): Main Channels: 5-Channel: 12 Hz-28 kHz
• Frequency response (+0, -1dB): Subwoofer Channel: 5-Channel: 12 Hz-10 kHz
• Input voltage range @ RCA inputs: Switchable from 200 mV-2 V RMS (low) to 800 mV-8 V RMS (high)
• Fuse rating:
• Monoblock/5-Channel: 60 A
• 4-Channel: 50 A
• 4-Channel (24 V): 25 A
• 5-Channel (24 V) 30 A
• Recommended fuse type(s): AFS, AGU or MaxiFuse™
• Min. copper power/Ground wire gauge: 4 AWG wire

Signal Processing

• Filter mode(s): Channels 1 & 2:
• 4-Channel: Off, Low-Pass or High-Pass
• 5-Channel: Off or High-Pass only
• Filter Slope(s): Channels 1 & 2: 4/5-Channel: 12/24 dB/octave
• Filter frequency range: Channels 1 & 2: 4/5-Channel: 50 Hz-500 Hz
• Filter mode(s): Channels 3 & 4:
• 4-Channel: Off, Low-Pass or High-Pass
• 5-Channel: Off or High-Pass only
• Filter Slope(s): Channels 3 & 4: 4/5-Channel: 12/24 dB/octave
• Filter frequency range: Channels 3 & 4: 4/5-Channel: 50 Hz-500 Hz
• Filter mode(s): Subwoofer Channel:
• Monoblock: Off, Low-Pass or High-Pass
• 5-Channel: Off or Low-Pass only
• Filter slope(s): Subwoofer Channel: Monoblock: 12/24 dB/octave
• Filter frequency range: Subwoofer Channel: Monoblock: 50 Hz-500 Hz
• Detented, calibrated filter frequent potentiometers
• Infrasonic filter: Subwoofer Channel: Monoblock/5-Channel: 30 Hz, defeatable
• Remote level control: Optional (HD-RLC)
• Remote level modes:
• 4-Channel: 2 or All Channels
• 5-Channel: Sub Channel only
• Channel input mode switch:
• 4-Channel: yes (2/4 Channels)
• 5-Channel: yes (2/4/6 Channels)
• Output polarity switch: Monoblock: yes
• Pass-through preamp output:
• Monoblock/4-Channel: Buffered
• 5-Channel: Buffered
• Source channel selection for PreOuts: 4-Channel: yes

What's in the Box:

• MHD amplifier
• Power input plug
• Speaker connection plug(s)
• Four mounting feet
• 2.5 mm Allen wrench
• 4 mm Allen wrench
• Four machine screws
• JL Audio badge