Monoprice Monolith 15 Inch Powered Subwoofer - Black | THX Select Certified, 1000 Watt Amplifier, 15 Inch Driver For Studio & Home Theater - Walmart.com
Monoprice Monolith 15 Inch Powered Subwoofer - Black | THX Select Certified, 1000 Watt Amplifier, 15 Inch Driver For Studio & Home Theater - Newegg.com