DESC: The Yamaha YST-SW216 front firing powered subwoofer raises the bar for subwoofers in its class. Advanced YST II (Yamaha Active Servo Technology II) cancels out impedance to ensure the highest level of sound pressure and low level sound performance. The 10 inch driver with long-stroke cone provides 100 watts of dynamic power fueling punchy, room shaking performance for all your multimedia applications. The Yamaha YST-SW216 is a great addition to any home theater setup in need of quality bass.