Set the benchmark for marine audio performance with the JL Audio M7 12" Marine Subwoofer. Designed as the reference standard for subwoofer performance, the M7-12IB produces staggering amounts of bass that will leave a lasting impression in any marine setting. Perfect for infinite-baffle applications, it delivers jaw-dropping low frequencies without the need for a dedicated enclosure. Built for extreme durability, the M7-12IB is equipped with a massive 4-inch voice coil and a rugged suspension system, providing exceptional linear excursion for high output and impressive power handling. It is optimized to operate with a large volume of air behind it (at least 3 cu. ft. / 84.95 l), and works best with 200W â 600W of amplifier power for a truly immersive audio experience. Designed to withstand harsh marine environments, this subwoofer is built for real-world saltwater duty, ensuring reliable, long-lasting performance on the water. The included Sport Grille provides additional protection and a sleek, polished look.• Generates stunning bass in open-air applications• Engineered use with or without a dedicated enclosure• Grille and Trim Ring are easily removable for painting• Exceeds international standards for salt fog and UV exposure• 2-Years Warranty• Sold individuallySpecsContinuous Power Handling (RMS): 600wSystem Nominal Impedance: 4 ohm Requires a large volume of air behind it (at least 3 cu. ft. / 84.95 l) Built for durability in saltwater marine environments Includes Sport Grille for protection and style | M7 12" Marine Subwoofer w/ Gloss White Sport Grille