Yamaha 100 Watt Subwoofer System RMS - Black YSTSW012BL
Yamaha's Advanced YST II, Linear Port and front-firing design give this subwoofer an outstanding combination of power, depth and clarity. Yamaha's Advanced Active Servo Technology is a complementary amplifier/speaker system utilizing negative impedance feedback in the amp and a Helmholtz resonator in the speaker to provide strong and accurate bass. The subwoofer is magnetically shielded so it can be placed near a TV monitor or receiver without degrading the picture.