Alpine R-A90S Marine Speakers The woofer design benefits from

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

If you need a small-format subwoofer that really delivers in extremely small enclosures

high- and low-pass filters

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

6 mm) Magnet Weight 45 oz

Alpine R-A90S Marine Speakers The woofer design benefits fromFor 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"