Sound off! If you desire impressive bass sound, look no further than this 100W powered subwoofer. The 8" down-firing, long-throw unit features 37-180Hz frequency response with variable crossover, a tuned vent, and a signal-to-noise ratio of greater than 80dB. Measures 11-1/4"H x 11-1/4"W x 11-1/4". 5-year LMW on woofer. 3-year LMW on amplifier and associated electronics. Black Laminate Finish. Made in China.