The Rockford Fosgate M2D4-10S is a premium 10-inch Color Optix™ marine subwoofer engineered for sealed enclosure applications in boats, UTVs, and powersports systems. Designed with Rockford Fosgate’s Element Ready™ construction, the M2D4-10S is built to withstand moisture, UV exposure, salt spray, vibration, and harsh outdoor conditions while delivering deep, accurate bass response. The subwoofer features integrated Color Optix™ RGB LED lighting that can be controlled through the optional PMX-RGB controller and RF Connect™ app, allowing customizable lighting patterns for marine and off-road builds. Its dual 4-ohm voice coil design provides flexible wiring options for amplifier matching. Key Features: 10-inch sealed enclosure 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 UV and salt-fog resistant materials VAST™ surround technology Marine-grade Deutsch™ connectors Includes sport and stainless grille inserts Optimized for sealed enclosure applications Performance Specifications: 400W RMS power handling 1600W peak power handling Frequency response: 20Hz – 250Hz Sensitivity: approximately 84–87 dB Mounting depth: approximately 4.5" Cutout diameter: approximately 8.9" Best Applications: Marine audio systems Wake boats & pontoons Polaris RZR & Ranger builds Can-Am Maverick X3 systems Compact sealed box installs RGB marine/powersports systems