Haut-parleurs marins encastrables M3-770X-S-Gw - visuel officiel 1

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

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Save 12%

JL Audio

010-03068-00

JL Audio M3-770X-S-Gw flush-mount marine speakers

The JL Audio M3-770X-S-Gw 7.7-inch flush-mount marine speakers are 2-way coaxial systems designed for high audio performance in marine environments. Optimized for infinite baffle and featuring salt fog and UV-resistant construction, they deliver 70 watts RMS and a frequency response from 45 Hz to 25 kHz.

Supplied in pairs with standard mounting hardware.

Price excl. import taxesBenefit from the professional rate

£254.43 GBP

£254.43 GBP ~~£290.77 GBP~~

Shipping calculated at checkout.

Prices exclude import taxes. DAP delivery: import taxes are paid on delivery.

Available in stock

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

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Speaker Diameter In	7.7
Audio Output Power Rms	70 W
Peak Power W	225 W
Impedance	4 ohms
Audio Frequency Response	45 Hz - 25 kHz
Audio Sensitivity Db	90.5 dB
Speaker Tweeter Type	Silk dome
Led Lighting	Oui
Rgb Color Select	Yes (7 fixed colors or optional RGB controller)
Mounting Diameter	159
Mounting Depth	81 mm
IP rating	Waterproof (marine standards)
Color	White
Source type	Flush-mounted unit
Environmental Usage Restrictions	Do not submerge, Do not expose to high-pressure water jet, Do not install in an engine compartment or extreme heat zone
Grille Diameter In	6.92
Mounting Cutout Diameter Inches	6.250
Mounting Screw Pilot Hole Fiberglass Thick In	1/8
Mounting Screw Pilot Hole Fiberglass Thin In	7/64
Mounting type	Flush-mounted
Operating voltage	12
Overall Diameter In	7.70
Recommended Installation	Professional
Weight	3.54

Detailed description

Designed for the marine environment, the JL Audio M3-770X-S-Gw 7.7-inch 2-way coaxial marine speakers deliver clear and powerful sound outdoors. These speakers are optimized for infinite baffle installation, allowing flexible mounting without requiring a dedicated enclosure, with a recommended air volume of at least 57 liters (2 cubic feet) behind each speaker for optimal low-frequency performance.

Design and Acoustic Performance

The woofer features an injection-molded polypropylene cone with mica reinforcement and a synthetic rubber surround, ensuring durability and precise response. The 0.75-inch (3/4") pure silk dome tweeter is treated to withstand marine conditions. The woofer’s large excursion design incorporates JL Audio’s exclusive Dynamic Motor Analysis (DMA), resulting in better bass extension, increased power handling, and reduced distortion. Each speaker includes a built-in 2-way passive crossover integrated into the woofer basket, featuring a polyswitch semiconductor tweeter protection circuit.

Marine Durability and Technical Specifications

The JL Audio M3-770X-S-Gw are designed for marine use and exceed international standards for salt fog and UV resistance. They handle a continuous RMS power of 70 watts and a peak power of 225 watts. Recommended amplifier power ranges from 20 to 140 watts per channel (RMS). The frequency response extends from 45 Hz to 25,000 Hz (± 3 dB) with a sensitivity of 90.5 dB at 1W/1m and a nominal impedance of 4 ohms. The cutout diameter is approximately 159 mm (6.25 inches), and the mounting depth is approximately 80 mm (3.15 inches). The outer frame diameter is 196 mm (7.70 inches). They are supplied with bright white "Sport" grilles. A variant of this model includes an integrated RGB LED lighting system, allowing up to seven fixed colors or thousands of variations with an optional RGB controller (sold separately), requiring a separate 12V wiring and a 150 mA inline fast-blow fuse for each speaker.

Documentation

Type	Nom
	Gabarit de montage - Gabarit d'installation pour haut-parleurs marins M3-770X (EN)
	Notice d'installation - Instructions d'installation pour haut-parleurs marins M3-770X

Expert opinion

« Technical analysis of JL Audio M3-770X-S-Gw marine speakers »

These JL Audio M3-770X-S-Gw coaxial speakers are a high-performance solution for marine audio systems. Their 7.7-inch size sets them apart from the more common 6.5-inch models, delivering increased efficiency and better mid-bass response. This feature enables richer, more intelligible sound reproduction, even in noisy environments like a boat deck underway.

The optimized infinite baffle design is a major advantage for installation. It simplifies the process by eliminating the need for a dedicated enclosure, which is often a constraint on boats where space is limited. Respecting the recommended air volume of 57 liters behind the speaker is critical to fully exploit its bass potential. The inclusion of a passive filter with tweeter protection ensures long-term reliability by safeguarding the most fragile component from overload.

For a visually appealing and functional integration, the RGB LED lighting variant (M3-770X-S-Gw-i) offers customization options. It is essential to provide a separate 12V wiring harness and a 150 mA fuse for each LED, which adds a step to installation but ensures the safety and longevity of the lighting system. While these speakers can operate with a standard marine car radio power source, adding a high-quality amplifier is strongly recommended to fully utilize their 70-watt RMS power and distortion-free sound capability at high volumes.

Durabilité

Facilité d'installation

Rapport performance / prix

Payment and security

Your payment information and data are processed securely.

JL Audio M3-770X-S-Gw flush-mount marine speakers

£254.43 GBP

£254.43 GBP ~~£290.77 GBP~~

Frequently Asked Questions

Need help? Contact us

What is the diameter of the JL Audio M3-770X-S-Gw marine speakers?

These speakers have an overall external diameter of 7.7 inches (approximately 196 mm).

Are these speakers designed for marine use?

Yes, the JL Audio M3-770X-S-Gw speakers are specifically designed for marine environments. They are water-resistant, but they must not be submerged or exposed to high-pressure water jets.

What type of speakers are the M3-770X-S-Gw?

These are 2-way coaxial speakers, meaning they integrate a woofer and a tweeter in the same unit for full-range sound reproduction.

What is the color of the M3-770X-S-Gw speaker grille?

The M3-770X-S-Gw speakers are supplied with a white Sport-style grille.

What is the impedance of these marine speakers?

The nominal impedance of the JL Audio M3-770X-S-Gw speakers is 4 ohms.

What diameter hole is required to install these speakers?

A cutout diameter of 6.92 inches (approximately 176 mm) is required for flush-mount installation of these speakers.

What are the recommendations for pilot holes for mounting screws?

For #8 screws, pilot hole recommendations are:

For fiberglass with a thickness of 0.125 inch (approx. 3.175 mm) or less: 7/64 inch. For fiberglass thicker than 0.125 inch: 1/8 inch.

Does the LED lighting for the speakers require a fuse?

Yes, it is imperative to install a fast-blow fuse in-line on the positive power wire of the LED cable for each speaker. For the M3-770 model, the fuse rating must be 150 mA. This protects the LEDs and the speaker from excessive electrical current.

Is it recommended to have these speakers installed by a professional?

Yes, professional installation is recommended for these speakers to ensure correct and secure mounting, requiring appropriate tools and safety equipment.

What precautions should be taken before starting the installation of the speakers?

Before any installation, it is crucial to turn off the audio system and disconnect the battery of the audio system. Additionally, before cutting or drilling, always check for potential obstructions behind mounting surfaces.

Where should I not install these speakers?

It is important not to mount these speakers in an engine compartment or any other area exposed to extreme heat, as this could damage the product.

How to clean JL Audio M3-770X-S-Gw marine speakers?

To clean these speakers, use mild soap and rinse them only with fresh water.

Are the M3-770X-S-Gw speakers optimized for a specific installation type?

Yes, these speakers are optimized for infinite baffle installation, which delivers excellent sound reproduction without requiring a sealed rear enclosure.

Can I control the LED colors without an external controller?

Individual LED wires can be wired to provide up to seven fixed LED colors. However, for adjustable control and more dynamic color options, an RGB lighting controller (sold separately) is required.

Are there regulations governing the use of LED lighting on a boat?

Yes, it is advisable to check with the local waterway authorities for specific regulations regarding the use of accent lighting or speakers on your vessel.