The JL Audio M3-770X marine coaxial speakers are purpose-built for real-world marine environments, offering excellent sound performance at a more accessible price than the flagship M6 line. With an oversized 7.7-inch design, these speakers deliver higher output and cleaner audio at greater volumes. A 0.75-inch silk dome tweeter ensures smooth, detailed highs, while the woofer is optimized for open-air installations with at least 2 cu. ft. of airspace behind it.• Oversized 7.7" design for louder, cleaner output• 0.75" silk dome tweeter for smooth high-frequency response• Ideal with 75â100W of continuous power per channel• Optimized for large air volume (= 2 cu. ft.)• Sold as a pairSpecsContinuous Power Handling (RMS): 70wRecommended Amplifier Power (RMS): 20 - 140w/ chSystem Efficiency: 90.5 dB @ 1 W / 1 mSystem Nominal Impedance: 4 ohmSystem Frequency Response: 45 Hz - 25 KHz ± 3 dB Woofer optimized for 2 cu. ft. of airspace for improved bass response 0.75" silk dome tweeter delivers smooth, detailed highs Recommended power: 75â100W per channel | M3 Series 7.7" Marine Coaxial Speakers w/ Gloss White Classic Grilles