JL Audio M3-770X-C-Gw M3 Series 7.7-Inch Marine Coaxial Speakers with Gloss White Classic Grilles, 70W RMS

Stepping up to a 7.7-inch woofer, the JL Audio M3-770X-C-Gw pairs gloss white classic grilles with deeper low-end reach than the 6.5-inch M3 model, rated down to 45 Hz. It suits boaters who want a larger coaxial for a larger mounting opening and who may power it from the stereo alone or from an outboard amplifier.

The woofer relies on JL Audio DMA modeling for its motor and suspension, with a mica-filled polypropylene cone. Up top sits a 0.75-inch silk dome tweeter guarded by a built-in second-order high-pass network and a solid-state protection circuit. The speakers are made for saltwater settings and exceed international salt-fog and UV test standards. A 3-year manufacturer warranty applies.

• 70 W RMS continuous handling; pairs with 20-140 W per channel amplifiers
• 90.5 dB sensitivity at 1 W/1 m; 45 Hz-25 kHz response (+/- 3 dB)
• 4 ohm nominal impedance; spade connectors
• Diameter 7.7 in; depth 4.19 in
• Needs 3.17 in of mounting depth; grille sits 1.02 in proud
• Bolt hole circle: 6.92 in
• Box contents: two speakers with grilles fitted, twelve stainless steel screws and washers, mounting template