The second generation M2 10-inch subwoofers create an unmatched audio experience, with class-leading output, complete on-water lighting control and grille customization. This subwoofer is optimized for Infinite Baffle installations, where an enclosure is not required. Sold individually (1 each). Color Optix™: Adjust your own bright, wide, and limitless lighting experience with the Rockford Fosgate Color Optix™ plug-and-play controller (sold separately) and App. Element Ready™: Purpose Built for the Marine Environment, Rockford’s Element Ready™ products are built to stand up to Water, Salt, and UV rays, making sure your subwoofers stand the test of time. Grille Customization: Multiple grille options provides a customized look by using either the stainless-steel grille or the “sport” grille inserts, allowing you to dial in your personalized-on water experience. True Marine Ecosystem: Integrated Deutsch™ / Amphenol™ connections provide industry leading marine plug-and-play connectivity and flexible install options.