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JL AUDIO 93521, M3-770X-S-GM-I: 7.7-inch Coaxial Speaker System, Sports Grille, Gunmetal w/ Built-in RGB LED Lighting, PAIR

SKU JLAM3-770X-S-GM-I Categories ,


Purpose engineered and built for real marine duty, M3 coaxial systems deliver excellent performance at a more affordable price than our maximum performance M6 models. The oversized 7.7 in design of the M3-770X results in increased efficiency (more output for a given amount of power). This gives them the ability to play louder and cleaner at high volumes than smaller speakers. The woofer design is optimized to operate with a large volume of air behind it (at least 2 cu-ft/57 L). Operating this coaxial system in less space will compromise its low frequency performance. A 3/4 in pure silk dome tweeter, specially treated to withstand the marine environment, handles the high frequency duties. Silk has been chosen for its lightness, excellent damping properties and smooth response characteristics. Integrated into the sport grille frame, the internal LED lighting assembly was meticulously designed to uniformly illuminate the woofer cone area with a lively glow, adding a dramatic visual experience to your high seas journey. Add an optional RGB controller to create thousands of color variations. Professional installation is strongly recommended. Although M3-770X coaxial systems can be used with as little as 20 W per channel, for best audio performance we recommend amplifiers capable of between 75 to 100 W of continuous power per channel.

Additional information
Weight 14 lbs
Item Name

Marine Coaxial Speaker with RGB LED Lighting







4 Ohm


Gunmetal Grille


70 W


90.5 dB at 1 W per 1 m



Speaker Size

7.7 in Dia

Peak Music Power

225 W

Mounting Size

6-1/4 in Dia x 3.17 in D

Mounting Type


Grill Style


Voltage Rating

10 to 14.4 VDC LED

Number of Speakers


Grille Size

1.1 in

Mounting Application

Infinite Baffle

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