Yamaha YST-SW215 8" 150 Watt Powered Subwoofer
With 250 Watts of power and a multitude of features, the Yamaha YST-SW215 will bring room shaking cinema action into your home.  Advanced YST-II and QD-Bass technologies give this subwoofer deep bass without sacrificing clarity and accuracy.  The continuously variable high-cut filter lets you match the subwoofer's output to your other speakers and to room acoustics.  A convenient Bass Action Selector System allows you to further tailor the output for video or music sources.