The unobtrusively handsome yet powerful, KEF KC4BL C4 subwoofer provides an incredible bass output with immaculate control. With a 200-watt on-board amplifier driving a 200-millimeter (8-inch) front-firing bass cone, the KC4BL is engineered to minimize distortion as meticulously as the rest of the range and adds effortless depth and weight to any performance. Place the KC4BL anywhere--since it uses a front-firing cone, it can be placed even in enclosed spaces such as a shelf or cabinet, without reducing performance.