JL Audio M3 7.7 inch Speakers Classic Grill
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JL Audio M3 7.7-inch Marine Coaxial Speakers – Gloss White Classic Grille (Pair)
More Surface Area. Bigger Bass. Uncompromised Marine Audio.
Go bigger with your boat’s sound system. The JL Audio M3-770X-C-Gw speaker system takes everything that makes the M3 series incredible and scales it up into an oversized 7.7-inch format.
Why 7.7 inches? It’s all about the physics of air movement. Compared to standard 6.5-inch marine speakers, these oversized drivers provide significantly more cone surface area. The result is a massive boost in efficiency, allowing them to play louder, cleaner, and with substantially deeper bass response—even when fighting against the open-air acoustics of wind, engine roar, and water spray.
Key Features
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Oversized 7.7-inch Drivers: Delivers massive acoustic output and enhanced low-frequency response that typical 6.5-inch speakers simply cannot match.
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Infinite Baffle Optimization: Engineered to thrive without a dedicated enclosure. These are optimized to use the large volume of air inside your boat's bulkheads or side panels (at least 2 cu. ft.) to act as a natural speaker box for rich, deep sound.
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Premium Silk Dome Tweeters: Outfitted with a 0.75-inch pure silk dome tweeter that has been specially treated to resist marine environments. Silk offers effortless lightness and damping, creating smooth, crystal-clear highs without any harsh distortion.
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True Marine® Certified Construction: Built from the ground up to endure endless cycles of salt fog, heavy vibrations, and intense UV exposure.
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Clean Classic Look: Finished in a premium Gloss White Classic Grille design that matches seamlessly with any clean, traditional, or contemporary boat aesthetic.
Technical Specifications
| Feature | Specification |
| Speaker Size | 7.7 in / 196 mm |
| System Configuration | Coaxial (2-Way) |
| Continuous Power Handling (RMS) | 70 Watts |
| Recommended Amplifier Power | 20 - 100 Watts per channel |
| System Efficiency | 90.5 dB @ 1W / 1m |
| Nominal Impedance | 4 Ohms |
| Frequency Response | 45 Hz - 25 KHz (± 3 dB) |
Dimensions & Mounting Information
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Outer Diameter: 7.70 in / 196 mm
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Mounting Hole Diameter: 6.25 in / 159 mm
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Mounting Depth: 3.15 in / 80 mm
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Tweeter Protrusion: 0.60 in / 15 mm (beyond the grille face)
What’s in the Box? Sold as a pair (two 7.7-inch coaxial speakers with integrated classic gloss white grilles), stainless steel mounting screws, and full installation hardware.