Wharfedale Pro DVP-X15M 800W Passive Subwoofer - 15"DVP X15B is tough. The cabinets are protected by proprietary enhanced Rhino Rock paint which means these loudspeakers will look as good as new even after many successful tours, parties and events. Special attention has been paid to the port and port mouth to ensure a huge bass output with detail and minimised distortion. DOUBLE ROLL SURROUND & DRIVER TECHNOLOGY DVP X15B loudspeakers use the latest in Wharfedale Pro driver technology: Engineers have