Acoustic Audio HD-SUB10-BLACK 10-Inch HD Series Front Firing Subwoofer (Black) Acoustic Audio High Definition Series home theater powered subwoofer, 600 watts peak power, frequency response is 24Hz-200Hz, efficiency is 97dB, built in digital drive high efficiency amplifier 10 Front firing long throw subwoofer, 8ohm impedance, adjustable independent gain control, bulletproof cone, parabolic RFL voice coil with aluminum former, vented and extended pole piece Low level and speaker level inputs and outputs, variable low pass frequency crossover control, signal sensing auto shut off function, phase control switch, bottom bass port, black ash finish High density MDF enclosure with advanced RFL bass reflex design, product dimensions with grill (H x W x D) 14.4"  13.4"  13.9", designed and engineered In the USA Use for in wall or in ceiling home entertainment, home theater systems, surround sound systems and multiple room systems