KLH Plat-6 6-Piece Surround Speaker System with 100-Watt Subwoofer (Discontinued by Manufacturer) 4 satellite speakers and 1 center speaker with 80 to 20,000 Hz frequency response; 1 powered subwoofer (100 watts) Satellites use two 3.6-inch aluminum-cone woofers and a .875-inch liquid-cooled dome tweeter (center speaker uses 4 woofers) Subwoofer uses a 10-inch, long-throw woofer in a ported enclosure; variable crossover ranges from 40 to 180 Hz Satellites and center speaker magnetically shielded for distortion-free use on or near a TV or computer monitor 5 to 125 watts per channel suggested amplifier power