JL Audio JLA-010-03320-00 MHD Monoblock Wide-Range Marine Amplifier (750 W)

JL Audio JLA-010-03320-00 MHD Monoblock Wide-Range Marine Amplifier (750 W)

Unleash powerful, clean bass on the water with the JL Audio MHD Monoblock Marine Amplifier, delivering 750 watts of continuous power in a compact, marine-grade package built to withstand the harshest conditions.

Product Overview

The JL Audio MHD Marine Amplifier (Monoblock configuration) is engineered specifically for demanding marine audio applications where reliability meets performance. This 750-watt powerhouse features conformal-coated circuit boards for superior protection against moisture and salt spray, ensuring years of trouble-free operation in the marine environment. The Class D amplifier topology delivers exceptional efficiency while maintaining audiophile-grade sound quality, with signal-to-noise ratios exceeding 110 dB below rated power. Measuring just 49mm high, this low-profile amplifier installs easily in tight spaces while providing the power needed to drive high-performance marine subwoofers. The MHD's sophisticated signal processing includes selectable low-pass or high-pass filters with 12/24 dB/octave slopes, defeatable 30 Hz infrasonic filter, and switchable input sensitivity ranging from 200mV-2V to 800mV-8V RMS. Compatible with both 12V and 24V systems, this versatile amplifier adapts to various vessel electrical configurations while maintaining consistent performance.

Features & Benefits

Marine-Grade Construction: Conformal-coated circuit boards and IP65-rated ingress protection shield internal components from moisture, salt spray, and harsh marine conditions, ensuring reliable operation season after season.

Exceptional Power Delivery: Delivers 750 watts RMS continuous power at both 2Ω and 4Ω loads, providing ample headroom for demanding subwoofer applications while maintaining less than 0.03% THD+N at rated power.

Advanced Signal Processing: Selectable filter modes (off, low-pass, or high-pass) with adjustable 12/24 dB/octave slopes and frequency range of 50 Hz-500 Hz allow precise system tuning. Detented, calibrated potentiometers ensure accurate, repeatable settings.

Flexible System Integration: Switchable input voltage range accommodates various source units, while buffered pass-through preamp outputs enable easy system expansion. Output polarity switch and optional HD-RLC remote level control provide additional tuning options.

Compact, Efficient Design: Class D topology delivers high efficiency in a low-profile package (49mm H × 273mm W × 199mm D), making installation straightforward even in space-constrained locations while minimizing heat generation.

Wide Voltage Compatibility: Operates on 11-14.5 VDC (12V models) or 22-29 VDC (24V models), accommodating various vessel electrical systems while maintaining consistent performance across voltage ranges.

Professional Installation Features: Includes power input plug, speaker connection plugs, mounting feet, Allen wrenches, and all necessary hardware. Recommended 4 AWG copper power/ground wire ensures proper current delivery.

Technical Specifications

Compatible With

This JL Audio MHD Monoblock Marine Amplifier pairs perfectly with JL Audio M3, M6, and M7 Marine Subwoofers for exceptional bass performance. Also compatible with JL Audio M3 and M6 Enclosed Tower Speakers, M6 Thin-Line Subwoofers, VeX™ Enclosed Systems, and MediaMaster® 55/105 stereos. Ideal for powering any marine subwoofer requiring up to 750 watts RMS continuous power.

Frequently Asked Questions

What is the power output of the JL Audio MHD Monoblock Marine Amplifier? The MHD Monoblock delivers 750 watts RMS continuous power at both 2Ω and 4Ω loads when operating at 14.4V or 12.5V input voltage, providing consistent performance for demanding subwoofer applications.

Can this amplifier handle both 12V and 24V electrical systems? Yes, the MHD is available in both 12V (11-14.5 VDC) and 24V (22-29 VDC) configurations, making it suitable for various vessel electrical systems from smaller boats to larger yachts with 24V systems.

What makes this amplifier suitable for marine environments? The MHD features conformal-coated circuit boards that protect against moisture and salt spray, IP65-rated ingress protection, and marine-grade construction throughout. These features ensure reliable operation in harsh marine conditions where standard amplifiers would fail.

What size power wire do I need for installation? JL Audio recommends minimum 4 AWG copper power and ground wire for the MHD Monoblock. The amplifier requires a 60A fuse (AFS, AGU, or MaxiFuse™ type) for proper circuit protection.

Does this amplifier include crossover controls? Yes, the MHD Monoblock includes selectable filter modes (off, low-pass, or high-pass) with adjustable 12/24 dB/octave slopes and frequency range of 50 Hz-500 Hz. It also features a defeatable 30 Hz infrasonic filter and detented, calibrated potentiometers for precise tuning.