SVS PB3000 vs Monolith 15 Subwoofer Showdown - YouTube
Amazon.com: Monolith 13 Inches THX Ultra Certified 2000 Watt Powered Subwoofer Massive Output, Low Distortion, for Studio and Home Theater Systems : Electronics
Amazon.com: Monolith Powered Subwoofer - 15 Inch with 1,000 Watt Amplifier, THX Certified, Ideal for Professional Studio and Home Theater : Electronics
Subgrade Outlaw Audio Ultra X-12 vs used Monolith 15 : r/hometheater
Amazon.com: Monolith Powered Subwoofer - 15 Inch with 1,000 Watt Amplifier, THX Certified, Ideal for Professional Studio and Home Theater : Electronics