Polk Audio 265-LS + 255C-LS Vanishing Series 3.0 High Performance In-Wall Speaker System This Speaker Package includes (2) Polk Audio 265-LS In-Wall Loudspeakers + (1) Polk Audio 255C-LS In-Wall Center Speaker 265LS: 6-1/2" Dynamic Balance midrange, 6-1/2" Dynamic Balance woofer, handles up to 200 watts, frequency response 28-33,000 Hz (-3dB) 255CLS: dual 5-1/4" Dynamic Balance woofers, frequency response 44-29,000 Hz (-3dB), handles up to 150 watts