🔊 JL Audio M3-770X-SGM Marine Speaker – Big Performance, Sleek Gunmetal Style
If you want bigger sound on the water with sharp looks to match, the JL Audio M3-770X-SGM Marine Speaker deliver both. These 7.7-inch coaxial speakers feature more surface area than standard 6.5" models, offering louder, fuller audio that holds up in open air.
With a sleek Sport Grille in Gunmetal, this marine speaker pairs aggressive styling with the clarity and durability you expect from JL Audio. Whether you're cruising, anchoring, or entertaining, these speakers bring the power.
🌊 Built Tough for Harsh Marine Use
Marine environments demand rugged audio gear. That’s why JL Audio designs their M3 marine speaker to survive extreme elements. The M3-770X-SGM features UV-treated polymers, corrosion-resistant hardware, and sealed motor structures.
These marine speakers are tested to ASTM B117 (salt-fog) and ASTM D4329 (UV exposure) standards. You get long-term protection from corrosion, fading, and breakdown.
Install them on your wake boat, fishing vessel, or pontoon with confidence.
🔉 Louder, Deeper Sound from a Bigger Cone
The 7.7-inch woofer in the M3-770X-SGM offers greater cone area than typical marine speakers. That means more midbass and output with less distortion. The silk dome tweeter delivers clean, bright highs that remain smooth at any volume.
Rated at 70 watts RMS and 225 watts peak, this speaker performs with or without an amplifier. Add a JL Audio marine amp for the best experience, especially in larger spaces or noisy decks.
You’ll hear every note clearly, even underway.
🛠️ Sporty Look, Smart Design
JL’s Sport Grille in Gunmetal offers a bold, modern look. It fits with custom interiors or factory styling on newer boats.
The speaker frame is shallow and designed for easy mounting in standard 7.7-inch cutouts. Sealed terminals and marine-grade components support long-term reliability.
These marine speaker look great and install easily.
🔧 Installed and Tuned by Audio Jam
At Audio Jam in Bear, Delaware, we specialize in marine audio installation. Our team uses stainless hardware, UV-stable wiring, and waterproof connectors on every install.
We verify speaker polarity, adjust gain, and tune output levels for smooth sound across your zones. Whether you’re replacing factory speakers or building a full custom system, we’re here to help.
📍 Audio Jam
227 Governor Place, Bear, DE 19701
📞 302-832-2868
🕒 Monday – Saturday, 10 AM – 6 PM
🔁 Expand with Matching JL Audio Gear
The M3-770X-SGM pairs seamlessly with JL Audio marine subwoofers, amplifiers, and head units. You can expand into tower speakers or multi-zone systems.
Explore compatible products in our Marine Speakers Collection. We offer expert guidance and system packages tailored to your vessel.
☀️ Protect Your Gear with Window Tint
Marine electronics degrade faster under direct sun and heat. Installing window tint reduces glare, blocks UV rays, and preserves your equipment.
Tint also cools interior spaces and protects vinyl, plastics, and electronics from long-term wear. For trusted results, we recommend Window Tint Delaware.
They specialize in marine-grade tint that performs in coastal environments.
🎵 Real Sound for Real Marine Life
JL Audio tunes their speakers for open-air listening. The M3-770X-SGM projects powerful, balanced sound even in windy, noisy conditions.
With wide dispersion and deep midbass, these marine speakers let you enjoy music from any deck or helm position.
They're built for long days, loud playlists, and lasting memories on the water.
❓ Frequently Asked Questions (FAQ)
Q1: Can I use these speakers without an amplifier?
Yes. They work well on head-unit power but sound better with an amp.
Q2: Are they safe for tower installation?
Yes. These marine speakers handle full exposure to salt, water, and UV light.
Q3: Will they fit in a 6.5" speaker hole?
No. These require a 7.7-inch cutout. Measure before purchasing.
