Amazon.com: Monolith M-215 THX Ultra Certified Powered Subwoofer - Dual 15-Inch, 2000-Watt Amplifier, Massive Output, Low Distortion, for Home Theater Systems, Black Ash Finish : Electronics
Amazon.com: Monolith Powered Subwoofer - 15 Inch with 1,000 Watt Amplifier, THX Certified, Ideal for Professional Studio and Home Theater : Electronics
Amazon.com: Monolith Powered Subwoofer - 15 Inch with 1,000 Watt Amplifier, THX Certified, Ideal for Professional Studio and Home Theater : Electronics