Wharfedale - WH-D10 (White) Goes Deep With Intense, Authoritative, Room-Shaking Bass 10-Inch Woofer, Built-In Power Amp, and Stylish Veneers Frequency Response: 30Hz - 150Hz  Max Power: 300 watts 14.3 H x 13.1 W x 14.6 D -- 30.1 lbs. Available in Black and White -- Sold as a Single Speaker