Athena AS-P6000 800-Watt 12-inch Subwoofer, Black (Discontinued by Manufacturer) 800-watt, 12-inch powered subwoofer for rich, powerful low-frequency reproduction Dual ports (1 bottom, 1 front) improve performance and minimize unwanted noise Down-firing orientation allows for flexible room placement and highest possible efficiency SCT rotary control for quick and easy integration with Athena home theater speakers 21 to 120 Hz frequency response; measures 13.3 x 19.5 x 20.5 inches (W x H x D); 1-year warranty