Alpine R2-SB12V Motorcycle Audio differential-balanced inputs help eliminate noise

differential-balanced inputs help eliminate noise

Why 16-inches

Designed to protect the finish of your investments

Designed for the ultimate performance

Alpine R2-SB12V Motorcycle Audio differential-balanced inputs help eliminate noiseAbout the Alpine R2 SB12V Twice the bass Alpine's Halo Series subwoofer enclosures make it simple to add bass (and more bass) to your system. You'll get great bass response from a single box, and when you're ready to expand your system you can add a second enclosure and the optional linking kit to create a two speaker system with double the impact. Laying it down The R2 SB12V comes loaded with Alpine's updated R2 W12D4 subwoofer wired for 2 ohm