Home Slickdeals 16″ Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $2100 +... Slickdeals 16″ Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $2100 + SD Cashback + Free Shipping By ARCOM - 14 April 2022 37 0 SHARE Facebook Twitter Go to the deal page: 16″ Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $2100 + SD Cashback + Free Shipping