HOP Aramid Carbon Fiber Matrix cone woofer for deep, powerful bass. High-power handling with 270 W max and 45 W RMS. Super tweeter for high frequency extension. Ideally designed for Sony head units with EXTRA BASS circuitry. Space-saving, easy-to-install design. Blast out your favourite driving songs with the XS-FB163G 3-way speakers. Featuring a HOP Aramid Carbon Fiber Matrix cone woofer for punchy bass, and high-power handling to pump up the volume without affecting sound quality.