Rockford Fosgate M2D4-12S 12" DVC 4-Ohm Color Optix™ Sealed Enclosure Marine Subwoofer apple CarPlay Big upgrade

Big upgrade

Bass boost (0–18dB @ 40Hz)

Wireless & wired Apple CarPlay

This setup gives a Road King something it doesn’t have from the factory—usable audio at speed

Titanium Tweeters

Rockford Fosgate M2D4-12S 12" DVC 4-Ohm Color Optix™ Sealed Enclosure Marine Subwoofer apple CarPlay Big upgradeOverview Big output, controlled bass. The Rockford Fosgate M2D4 12S is a 12" marine subwoofer designed specifically for sealed enclosures. It delivers strong, accurate low end while keeping things tight and predictableno sloppy bass here. What It Is A sealed box marine subwoofer built for performance. 12" subwoofer Dual 4 ohm voice coils Designed for sealed enclosures Part of the Color Optix lineup Built for systems that want clean, controlled bassnot