Home Slickdeals 16″ Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $1380 +... Slickdeals 16″ Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $1380 + Free Shipping By ARCOM - 5 March 2024 9 0 SHARE Facebook Twitter Go to the deal page: 16″ Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $1380 + Free Shipping