JL Audio MHD Marine Amplifier - 4 Channel Full-Range (600 W For 24V Systems)

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 OPTIMISED 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

2-YEAR WARRANTY

SINGLE CYCLE CONTROL
Ground breaking 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-aluminium, 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.

## Features##

Features

• 600 W on tap for 24 V rigs
• 150 W per channel at 4 ohms
• Class D efficiency saves battery capacity
• RealSink chassis sheds heat without fans
• Marine-grade aluminium hardware made to last
• Optional HD-RLC lets you tweak levels underway

## Features##

## Specifications##

Specifications

System voltage: 24 V (22–29 VDC for 24 V models)

• Channels: 4-channel full-range marine amplifier

• Total power output (24 V systems): 600 W

• Rated power @ 4 Ω (28.8 V input): 150 W x 4 / 300 W x 2 bridged

• Rated power @ 2 Ω (28.8 V input): 150 W x 4 / 300 W x 2 bridged

• Amplifier class: Class D with Single Cycle Control™

• Operating voltage range (all models): 11–14.5 VDC (12 V) / 22–29 VDC (24 V)

• Frequency response (4-channel): 6 Hz – 30 kHz (+0, -1 dB)

• Signal-to-noise ratio (4-channel): > 110 dB (A-weighted, 20 Hz – 20 kHz)

• THD+N @ rated power (4-channel): < 0.03% @ 4 Ω

• Damping factor (4-channel): > 300 @ 50 Hz, 4 Ω

• Input voltage range @ RCA: 200 mV–2 V RMS (low) or 800 mV–8 V RMS (high)

• Filter modes Ch 1–2: Off / Low-Pass / High-Pass

• Filter modes Ch 3–4: Off / Low-Pass / High-Pass

• Filter slopes Ch 1–4: 12 or 24 dB/octave

• Filter frequency range Ch 1–4: 50 Hz – 500 Hz

• Remote level control: optional HD-RLC

• Channel input mode switch: 2/4 channels

• Pass-through preamp outputs: buffered

• Recommended fuse rating (4-channel 24 V): 25 A

• Recommended fuse types: AFS, AGU or MaxiFuse

• Minimum power/ground cable: 4 AWG copper

• Chassis: all-aluminium, powder-coated RealSink heat sink

• Protection: advanced rollback thermal protection, watertight control cover

• Environmental testing: exceeds international standards for salt fog and UV exposure

• Physical height: 49 mm

• Physical width: 273 mm

• Physical depth: 199 mm

• Warranty: 2 years

## Specifications##

##In the box##

In the Box

• MHD marine 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

##In the box##