Polk Audio 700LS High Performance In-Ceiling / In-Wall Speaker System Package Speaker Package includes (2) Polk 700LS Speakers, (2) Polk 265LS Speakers & (1) Polk 255CLS Center Channel Speaker 700LS: 3/4" ring-radiator tweeter, 2-1/2" Dynamic Balance midrange speaker, 5" x 7" Dynamic Balance woofer with Cassini Oval driver design, handles up to 150 watts 265LS: 1" ring radiator tweeter 6-1/2" Dynamic Balance midrange 6-1/2" Dynamic Balance woofer, handles up to 200 watts, sensitivity 91 dB 255CLS: 1" Dynamic Balance ring radiator tweeter, dual 5-1/4" Dynamic Balance woofer, Handles up to 150 watts, sensitivity 91 dB