Technical Pro HT-S12 5.1 Home Theater Speaker System with 12-Inch Powered Subwoofer (Set of Six, Black) (Discontinued by Manufacturer) Includes: Two pairs of front and rear passive surround sound speakers (SP-S2), One passive center speaker (SP-C2) and One powered subwoofer (SW-1201) Powered Subwoofer: 12-inch woofer - 30 oz - 1.375-inch voice coil - 1000 watts peak power - Inputs: RCA and Bare Wire - Crossover - Adjustable Low-pass filter: 40Hz-180Hz - Impedance: 6 ohms - Sensitivity: 95 2dB Passive Center Speaker (SP-C2): 200 watts peak power - Impedance: 8 ohms - Veneer vinyl finish Passive Surround Sound Speakers (4) (SP-S2): 150 watts peak power each - Impedance: 8 ohms