Our largest and most powerful Wireless-Ready Subwoofer is still compact enough to fill a big room with waves of tight bass without cramping your style. The DSWpro660wi boasts a 500W Intelligent Digital Amplifier that effortlessly moves a 12-inch Dynamic Balance Driver. Explosions are more explosive. Deep bass effects are more subterranean. Bass response is more accurately musical. No wires With the optional Wireless Transmitter , DSWpro-wi Series Subwoofers finally eliminate wire clutter without sacrificing performance. The Wireless Transmitter system is instantaneous and full range, for utterly loss-less signal at realistic lightning speeds. From anywhere in your room, DSWpro-wi delivers tremendous Polk Audio bass performance with no unsightly wires!