Acoustic Research ARHC6 6-Piece Home Theater Speaker System (Discontinued by Manufacturer) 6-piece surround sound speaker system in glossy, piano-black finish 4 satellite speakers with 3.5-inch woofers and 1-inch tweeters Center speaker equipped with dual 4-inch woofers and 1-inch tweeter Powered subwoofer with 8-inch long-throw woofer and 100-watt integrated amplifier 32 Hz to 20 kHz frequency response; 25 to 100 watts recommended power