Polk Audio RM6800 5.1 Channel Home Theater Speaker System (Set of Six, Titanium) 6-piece home theater speaker system with 4 satellite speakers, center channel speaker, and powered subwoofer Equipped with a 3.25-inch polymer cone midrange driver and 0.75-inch silk/polymer composite dome tweeter per satellite speaker Powered 10-inch subwoofer with slot-load bass vent pours out deep, efficient bass System frequency response: 28Hz - 24kHz Handles up to 125 watts per channel