More on Amazon.com : http://www.amazon.com/gp/product/B00009W8XH?tag=purrfectcatdi-20 <br /> <br />Yamaha Corporation of America SW315 Subwoofer System - Black Ash <br /> <br />Physical Characteristics-Weight Approximate-4189 lb <br />YAMAHA 10 SUBWOOFER 270 WATT AMP <br />Yamaha YST-SW315 Subwoofer System - Black Ash <br />10-inch driver with high-efficiency 250-watt PWM digital amplifier <br />Advanced YST ensures that the speaker and amplifier work together to create perfectly linear speaker motion <br />BASS Bass Action Selector Switch tailors the subs output for video or music at the touch of a switch
