Monoprice SSW-12 12in 150-Watt Powered Slim Subwoofer $123.74 + Free Ship Monoprice has *Monoprice 12″ 150W Powered Slim Low Profile Subwoofer* (SSW-12) on sale for $164.99 – Extra $41.25 Off w/ promo code BIG25 (apply in cart) = *$123.74*. *Shipping is free*. Thanks to…