12" 150 Watt Powered Slim Subwoofer - Monoprice®The Monoprice SSW-12 is a 12" 150-watt powered subwoofer that helps alleviate subwoofer placement in any room. This slim, low profile ported subwoofer can be placed under your favorite chair, behind your TV stand, or under your sofa. The subwoofer includes on-wall mounting brackets, allowing you to place it on the wall if you prefer. Fortunately, you will not have to skimp on bass output, as the SSW-12 has been specifically engineered to take advantage of its distinctive enclosure.