The JL Audio M3-770X-S-Gm-i is a genuine M3 Series 7.7-inch (oversized) 2-way marine coaxial speaker set built for harsh salt, sun and spray environments. This version features Gunmetal Sport grilles with integrated RGB LED illumination to add clean, even cone lighting to your boat’s sound system.

• Configuration: 7.7" 2-way coaxial marine speakers (sold as a pair)
• Power handling (continuous/RMS): 70 W per speaker (140 W per pair)
• Recommended amplifier power (RMS): 20–140 W per channel (JL Audio suggests ~75–100 W/ch for best results)
• Nominal impedance: 4 ohm
• Sensitivity: 90.5 dB @ 1 W / 1 m
• Frequency response: 45 Hz – 25 kHz (±3 dB)
• Tweeter: 0.75" (3/4") treated silk-dome tweeter
• Woofer cone: injection-molded, mica-filled polypropylene with synthetic rubber surround
• Mounting (infinite-baffle / free-air): optimized for large air volume behind the speaker (at least 2 cu. ft. / 57 L recommended)
• Cutout / depth: 6.25" (159 mm) cutout; 3.17" (81 mm) mounting depth
• Overall frame OD: 7.70" (196 mm)
• LED lighting: built-in RGB LEDs (10–14.4 VDC supply). For full color control, pair with an optional JL Audio MLC-RW RGB lighting controller (sold separately).

OEM / reference numbers: JL Audio M3-770X-S-Gm-i (MPN 93521). Garmin ref 010-03067-00. UPC 699440935210.

Before ordering: confirm cutout size, mounting depth/clearance, amplifier power ratings and LED control requirements to ensure correct fitment and system compatibility.