The Rockford Fosgate M2D4-10I is a premium 10-inch Color Optix™ marine subwoofer designed for infinite-baffle/free-air applications in boats, UTVs, and powersports systems. Built with Rockford Fosgate’s Element Ready™ marine construction, it delivers deep, accurate bass while resisting UV exposure, moisture, vibration, and salt spray. One of the standout features is the integrated Color Optix™ RGB LED lighting system, which works with Rockford Fosgate’s PMX-RGB controller and RF Connect™ app for customizable lighting effects. The dual 4-ohm voice coil configuration provides flexible wiring options for a variety of amplifier setups. Key Features: 10-inch infinite baffle marine subwoofer Dual 4-ohm voice coils (DVC) 2Ω or 8Ω final impedance wiring options Color Optix™ RGB LED lighting Element Ready™ marine-grade construction IPX6 water intrusion rated UV and salt-fog resistant materials VAST™ surround technology Deutsch™ integrated marine connectors Includes stainless and sport grille inserts Optimized for free-air/infinite-baffle installs Performance Specifications: 400W RMS power handling 1600W peak power handling Frequency response: 20Hz–250Hz Sensitivity: approximately 86–87 dB Mounting depth: approximately 4.5" Cutout diameter: approximately 8.9" Best Applications: Boats & pontoons Wake boats Polaris RZR & Ranger systems Can-Am Maverick X3 builds Marine free-air installs RGB marine audio systems