The Dayton Audio SUB-100 is the perfect subwoofer for small to medium sized home theaters or listening rooms. A 125 watt amp, long-throw front firing 10" driver, and dual rear ports produce impressively deep and clean bass. The amplifier features high and low level inputs, filtered high and low level outputs, phase switch, volume control, auto on/off (activated by an input signal) and a variable 12 dB/octave electronic low pass filter. Despite its small size, this subwoofer plays serious low-frequency bass that will rival the performance of much more expensive subwoofers. Specifications: *10" long throw woofer *125 watt amp *Low pass filter: 40~180 Hz, 12 dB/octave *Frequency response: 30-180 Hz *Exterior dimensions: 14-3/4" W x 16-1/2" H x 15-3/4" D.