Alpine R-A90S Marine Speakers The rugged medium-density fiberboard enclosure

The rugged medium-density fiberboard enclosure is only 5

Optimized Tunes: Designed specifically for your current Rockford Fosgate motorcycle audio system

The woofer design benefits from JL Audio's vast woofer design experience and advanced modeling systems

the MMP-1-BK includes stainless-steel hardware and a full-surface gasket to ensure a secure and watertight installation

You can access your iPhone's iTunes music library

Alpine R-A90S Marine Speakers The rugged medium-density fiberboard enclosureFor loud and realistic sounding music Into high res music? Alpine's R Series R A90S amplifier reproduces high frequency sounds up to 45,000 Hz, so you can enjoy the clean sound and enhanced realism you want in your music. Alpine applied some hot technology from their top of the line X Series amplifiers into this R Series amp, including the use of high efficiency transformers and premium custom capacitors in the amp's construction. Dual "Sierra"