Amplificateur marin MX500/4 - visuel officiel 1

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JL Audio

010-03106-00

Marine amplifier MX500/4

The JL Audio MX500/4 marine amplifier is a 4-channel Class D model delivering 500 watts, featuring NexD™ technology for high energy efficiency. Certified to IPX7 and equipped with a corrosion-resistant aluminum chassis, it is designed for demanding marine environments. Its balanced differential inputs minimize noise for preserved audio quality.

Includes 4 stainless steel mounting screws and a user manual.

Retail priceBenefit from the professional rate

274,97€

274,97€ ~~308,33€~~

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Prices shown excluding VAT for Türkiye. If your delivery address is in the European Union, the VAT of the destination country will be added at checkout.

Available in stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

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Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Amp Class	Class D
Speaker Channels	4
Audio Output Power Rms	500 W
Total power output (W)	500
Input voltage range	0.25 V - 15 V
Max power consumption	600 W (based on recommended fuse)
IP rating	IPX7
Weight	1.96
Amp Bridgeable	Oui
Subwoofer Output	Yes, via bridged or filtered channels
Source type	Marine amplifier
Color	Black
Full Range Support	Yes
Fuse rating	50
Ground Wire Gauge	4 AWG
Mounting type	Area
Operating voltage	12
Power Wire Gauge	4 AWG
IP rating	IPX7
Wired input	RCA (Audio/Video)

Detailed description

The JL Audio MX500/4 marine amplifier is a four-channel audio solution designed for marine environments and motorized sports. It uses JL Audio’s NexD™ Class D switching technology to deliver 500 watts RMS, distributed across four channels. Its design is optimized for high-fidelity audio performance without overloading the vessel’s charging systems.

Audio performance and marine robustness

This amplifier delivers 70 watts RMS x 4 at 4 ohms, 125 watts RMS x 4 at 2 ohms, or 250 watts RMS x 2 in bridged mode at 4 ohms. Its frequency response ranges from 20 Hz to 20 kHz (+0, -1 dB) with a signal-to-noise ratio exceeding 88 dB (A-weighted). The total harmonic distortion (THD+N) is below 1% at 2 ohms per channel. To accommodate different speaker configurations, it includes adjustable high-pass and low-pass filters (35–300 Hz, 12 dB/octave).

Built for durability in marine environments, the MX500/4 amplifier features a compact die-cast aluminum chassis resistant to corrosion, with a powder-coated finish. It is rated IPX7 for water resistance, supporting immersion up to 1 meter for 30 minutes, provided the control panel cover is properly installed. The balanced differential inputs help minimize noise induced by cables, a key advantage in marine installations. An advanced protection system (Advanced Rollback Protection System) prevents thermal shutdown in extreme conditions.

Integration and installation

The amplifier is compatible with 12-volt negative-ground electrical systems. It accepts both low-level (RCA, 250 mV–4 V RMS) and high-level (750 mV–15 V RMS) input signals, enabling integration with various audio sources. For power, a 4 AWG gauge cable is recommended for both positive and negative leads. An external 50 A fuse (AFS, AGU, or MaxiFuse™) must be installed within 45 cm of the battery’s positive terminal. Its compact dimensions (237 mm L x 45 mm H x 115 mm D) facilitate installation in tight spaces. The unit ships with four stainless steel mounting screws and a user manual.

Documentation

Type	Nom
	Manuel utilisateur - Manuel d'utilisation Amplificateur marin JL Audio MX500/4 (EN)

Expert opinion

« JL Audio MX500/4: Compact power and marine reliability »

The JL Audio MX500/4 amplifier is a relevant choice for marine and power sports audio installations where reliability and compactness are critical. Its NexD™ Class D technology is a major asset, delivering high energy efficiency that reduces strain on the boat’s electrical system while maintaining consistent output power. This is a key factor in preventing battery issues, which is particularly beneficial for vessels where energy efficiency is crucial.

This amplifier’s marine-grade design is confirmed by its IPX7 certification and corrosion-resistant cast aluminum chassis. These features make it suitable for installation in damp environments, though it should still be mounted in a location protected from direct spray and prolonged immersion. The balanced differential inputs are a significant technical advantage, as they drastically reduce interference and electrical noise, which are common in marine environments and can degrade sound quality.

Installation requires careful attention to the power cable gauge (4 AWG) and the integration of an external 50A fuse. However, this offers flexibility in fuse type selection and placement. Its ability to operate in bridged mode (2x 250W) makes it versatile, allowing it to drive subwoofers or more power-hungry speakers in addition to a standard stereo configuration. Its compact size simplifies integration into tight spaces in consoles or technical compartments.

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Marine amplifier MX500/4

274,97€

274,97€ ~~308,33€~~

Frequently Asked Questions

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What type of amplifier is the JL Audio MX500/4?

The JL Audio MX500/4 is a four-channel, full-range marine audio amplifier using Class D technology. It delivers 500 watts of power.

What is included in the MX500/4 amplifier box?

The MX500/4 amplifier housing contains:

One (1) amplifierFour (4) stainless steel mounting screwsOne (1) user manual

What is the water resistance rating of this amplifier?

This amplifier has an IPX7 water resistance rating. It has been tested to withstand immersion in water up to 1 meter deep for a maximum of 30 minutes, provided the control panel cover is properly installed.

Can the amplifier be submerged or cleaned with a high-pressure water jet?

No. Although it is designed to be water-resistant, this amplifier must never be submerged under water or exposed to high-pressure water jets.

With which marine electrical systems is the MX500/4 amplifier compatible?

This amplifier is designed to operate with 12-volt negative-ground electrical systems.

Does using the amplifier with an incompatible electrical system void the warranty?

Yes, using this product with positive-ground systems and/or voltages other than 12V may damage the product and will void the warranty.

Is the JL Audio MX500/4 amplifier certified for use on aircraft?

No, this product is neither certified nor approved for use in aircraft.

Where should I mount the amplifier to ensure optimal performance and safety?

Mount the amplifier in a dry, well-ventilated location that does not interfere with other factory-installed electronic devices. If a dry environment is not available, a location not exposed to heavy spray may be used. It must never be installed in the engine compartment, in areas of extreme heat, or directly exposed to the elements.

What is the minimum power cable size for this amplifier?

The minimum wire gauge required for this amplifier is 4 AWG (American Wire Gauge).

What type of fuse is required and where should it be installed?

An appropriate fuse (sold separately), such as the JL Audio Water-Resistant Master MAXI™ fuse block, is essential for vehicle/boat safety. This fuse must be installed within 45 cm (18 inches) of the battery’s positive terminal. If this amplifier is the only device connected to this main power wire, use a 50A fuse.

How should I connect the ground wire of the amplifier?

Connect the black negative ground wire to a clean, solid metal ground point near the amplifier. This can be the chassis ground if available. If no metal chassis ground is available, this connection may need to be made to the battery’s negative terminal. The minimum ground wire size is 4 AWG. All ground connections (source unit and amplifiers) must be made at the same point.

How to connect the remote turn-on wire?

Connect the blue remote start wire to the positive (+12V) remote start output of your source unit. If your source unit has no dedicated remote start output, the amplifier's start wire can be connected to +12V via a switch powered by an ignition-switched circuit.

What are the available signal input options for the amplifier?

The amplifier offers two signal input options:

Low-Level Input: Connect the amplifier's RCA input jacks to the source unit's preamp-level outputs. The RCA/preamp-level range is 250 mV to 4 V.
High-Level Input: If your source unit lacks preamp-level outputs, you can splice the source unit's speaker output wires to a pair of RCA jacks for each input pair, or use the JL Audio ECS Speaker Wire to RCA adapter (XD-CLRAIC2-SW). Ensure correct polarity is observed. The RCA/speaker-level range is 750 mV to 15 V.

How to access the settings and controls of the amplifier?

The amplifier's controls and settings are located on the lower panel, beneath a watertight protective cover. To access them, remove the four Phillips screws from the central panel. Do not forget to reattach the cover once adjustments are complete before reinstalling the amplifier.

What channel modes are available on the MX500/4 amplifier?

The amplifier offers multiple channel modes:

2CH: 4 stereo outputs (non-fading) or 2 bridged mono outputs (use only front inputs). 3CH: 2 front stereo outputs + 2 rear mono outputs or 2 front stereo outputs + 1 bridged rear mono output (use only front inputs). 4CH: 4 stereo outputs (fading) (use front and rear inputs) or 2 bridged stereo outputs (left to both, right to both) (use front inputs, rear inputs).

What are the input voltage ranges for low-level and high-level signals?

Input voltage ranges are:

Low level (Low): RCA/preamp level range from 250 mV to 4 V. High level (High): RCA/speaker level range from 750 mV to 15 V.

What filter options are available on the amplifier?

The amplifier offers the following filter modes:

Off: Full-range operation of input signals.HP (High-Pass): Configures the filter to attenuate frequencies BELOW the selected filter frequency.LP (Low-Pass): Configures the filter to attenuate frequencies ABOVE the selected filter frequency.

Is the filter cutoff frequency adjustable?

Yes, the filter cutoff frequency is adjustable and variable starting from 35 Hz.

Is it important to protect the system cables during installation?

Yes, it is crucial to protect all system cables from sharp edges (metal, fiberglass, etc.) by routing them carefully, securing them, and using grommets and sleeves if necessary. Secure all cables with cable ties or clamps to protect them from moving parts and sharp edges.

Do I need to check the mounting location before drilling holes?

Yes, always check before drilling to ensure you are not drilling into an exterior panel/hull, fuel tank, fuel/brake line, cable bundle, or any other critical system.