Acoustic Audio HD516 In-Wall/Ceiling Home Theater Surround 5.1 Speaker System Acoustic Audio by Goldwood HD516 six piece home speaker 2-way set, 2 HD-650 wall speakers, 30Hz-22 kHz, 98dB, 2 HD-6 ceiling speakers, 32Hz-22 kHz, 98dB, 20-300W per speaker, 8ohm, 6.5" woven fiber bulletproof woofers Butyl rubber surrounds, pivoting titanium tweeters, rectangular cut out 7.375" x 10.75", overall 8.875" x 12.25", depth 3", round cut out 7.875", overall 9", depth 3.25", low profile housings HD-6c wall center channel 3-way speaker, 20-350 watts, 33Hz-22 kHz, two 6.5" woofers, 12mm soft dome tweeter, cut out is 19.25" x 7.5", overall is 20.5" x 8.75", depth: 3.25" HDS10 wall passive sub speaker, 20-300 watts, 26Hz-200Hz, 10" woofer, cut out is 10.625" x 10.625", overall is 12" x 12", depth is 3.75", this passive sub requires a WS1005 sub amplifier Use for in wall or in ceiling home entertainment, surround sound, home theater, multiple room systems, this listing and price is for complete 6 piece in wall and in ceiling speaker set