Excerpt: subwoofer. The WL-12 has a down firing 12" driver with a front firing 12" passive radiator (PR). Measuring in at a mere 16.5"x15.25"x14.75" (HWD, at it's widest point), and weighing 41 pounds, it's certainly not a large or particularly heavy subwoofer. The internal amp is rated at 300 watts RMS, 900 watts peak. The quoted frequency response is 22Hz-200Hz.