Marine amplifier MHD600/4-24V

The JL Audio MHD600/4-24V marine amplifier is a 4-channel Class D marine sound system solution. It is specifically designed for 24 V marine electrical systems and uses patented technologies such as Single Cycle Control™ and the R.I.P.S. power system to deliver high-quality sound performance and stable power output.

This marine amplifier delivers a total power output of 600 W for 24 V systems. It is a 4-channel amplifier, providing 150 W RMS per channel at an impedance of 1.5 to 4 ohms.

The JL Audio MHD600/4-24V amplifier integrates two major technologies:

Single Cycle Control™ Class D: This patented technology delivers reference-grade sound performance across the entire frequency range while drawing less current from the boat’s electrical system than a conventional amplifier. R.I.P.S. (Regulated Intelligent Power Supply): This exclusive power supply system optimizes output for each channel section across any impedance between 1.5 and 4 ohms per channel (or 3–8 ohms in bridged mode for front and rear sections), ensuring clean, stable power over a wide voltage range on the boat.

Although this amplifier is specifically designed for marine applications, it is not waterproof. It must not be installed in a location where it could be exposed to moisture. It is recommended to install it in a dry, well-ventilated environment.

JL Audio's R.I.P.S. (Regulated Intelligent Power Supply) power system offers several advantages:

It optimizes the output power of each channel for any impedance between 1.5 and 4 ohms per channel (3–8 ohms in bridged mode), allowing optimal use with a wide range of speaker systems. It ensures that the output power remains stable and clean across a broad voltage range on the boat, improving audio fidelity.

This amplifier is designed to operate exclusively with 24-volt negative-ground marine electrical systems. It is not intended for use in 12 V systems.

Yes, the R.I.P.S. power system of the amplifier optimizes the output of each channel for any impedance between 1.5 and 4 ohms per channel. For the front and rear sections in bridged mode, it is compatible with impedances from 3 to 8 ohms.

No, this amplifier is not compatible with 12V electrical systems. It is specifically designed for 24V systems, and using it in a 12V system may damage the product and void the warranty.

Yes, the flexible input and crossover sections of the amplifier allow use with a wide variety of source units and system configurations. It can operate with a single pair of stereo inputs or with two pairs of stereo inputs (front and rear).

No, it is strongly discouraged to attempt to 'bridge' the outputs of this amplifier with the outputs of a second amplifier, even if it is identical. This practice may damage the product.

The amplifier must be installed in a dry, well-ventilated environment. It is essential to mount it securely so that it does not detach in the event of a shock or strong vibrations. Avoid mounting it in the engine compartment or any other area that would expose the amplifier's circuits to the elements. It is not waterproof.

The amplifier’s outer casing is designed to dissipate heat. For optimal cooling performance, this casing must be exposed to as large a volume of air as possible. If the amplifier is mounted under a seat, ensure there is at least 2.5 cm (1 inch) of clearance above the outer casing to allow adequate cooling. Mounting the amplifier upside down is strongly discouraged.

For a single MHD600/4-24V amplifier, a minimum 8 AWG power wire is recommended. If additional amplifiers are installed and powered by the same main power wire, it is advised to use a main power wire of 4 AWG, 2 AWG, or 1/0 AWG with a power distribution block.

Yes, an appropriate fuse is essential to protect the boat and the amplifier. It must be installed on the positive power wire, within 45 cm (18 inches) of the battery’s positive terminal. The fuse should only be installed once the power wiring is connected to the amplifier.

During installation, it is crucial to take the following precautions:

Always check before drilling holes to ensure you do not drill into the hull, a fuel tank, a fuel line, a wiring harness, or any other vital boat system.Never route the system wiring outside or under the boat.Protect all system wires from sharp edges (metal, fiberglass, etc.) by routing them carefully, securing them, and using grommets and sleeves where necessary.Always disconnect the battery’s negative terminal before starting installation and secure the disconnected cable to prevent accidental reconnection.

Audio input cables (RCA cables) must be connected to the RCA input jacks on the amplifier. The amplifier has flexible input sections allowing it to be configured with a single pair of stereo inputs or with two pairs of stereo inputs (front and rear) depending on your system.

For optimal cooling, the amplifier's outer casing must be exposed to maximum air volume. Avoid enclosing the amplifier in a small, poorly ventilated compartment, as this can lead to excessive heat buildup and performance degradation. If mounting under a seat is necessary, ensure at least 2.5 cm (1 inch) of clearance above the casing.

Using this amplifier in boat electrical systems with a positive ground or voltages other than 24 V may cause product damage and void the warranty. It is therefore essential to comply with voltage and ground specifications to maintain warranty validity.

The amplifier's serial number is located on the bottom panel of the device as well as on the product packaging. It is recommended to record it for your records in case of service or theft.