Velodyne Impact Mini Powered Subwoofer for $238.00 after promo code LSDA0331. Shipping is $19.99 for a total of $257.99 shipped. Here is a screenshot for your reference. It features MDP amplifiers, 2″ copper voice coils, down-firing ports and down-firing bass radiator, 180 watts RMS power, 6.5″ active and 8″ passive woofers, and more. Most places have it for about $399.