16" Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $1379.99 +Free Shipping

16" Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer $1379.99 +Free Shipping. Monoprice has 16" Monoprice Monolith THX Certified Ultra 2000 Watt Powered Subwoofer (42031) $1839.99 - Coupon BIG25 = $1379.99 - Shipping is Free. Also available from Monoprice via eBay for $1379.99. Shipping is Free.