DESC: Experience exceptional bass performance for your music and movie systems with the JBL L8400P 600-Watt Powered Subwoofer. JBL Studio L Series provides technologies and materials that enhance audio performance beyond the industry standard of 20kHz and brings professional studio sound to your digital home theater. The L8400P features a massive PolyPlas cone with cast-aluminum chassis and rubber surround, providing enough power to impress even the most intense audiophiles.