Proficient Audio Systems IWS10 10-Inch In-Wall Subwoofer (Discontinued by Manufacturer) 250W Power Handling 10-Inch Excursion-Treated Paper Cone Woofer Freq Resp: 32 Hz200 Hz Inverted Neodymium Magnet Structure Baffle Dim: 13.625-InchH X 13.625-InchW