Thumb Score: +16 Monoprice has Monolith by Monoprice M-215 Dual 15″ THX Certified Ultra 2000-Watt Powered Subwoofer (38543) on sale for $1,499.99. Freight shipping costs vary by location. Thanks to Community Member turnne for sharing this deal. Details:[LIST][*]Woofer: 2x 15″ cone[*]Cone Material: 2‑layer long fiber pulp/glass fiber cone