OSD Audio IW550LCR Kevlar Series Home Theatre In-Wall Center Channel/LCR Speaker (Single, Off-White) (Discontinued by Manufacturer) Dual 5-inch Kevlar woofers Pivoting 1-inch aluminum dome tweeter 150-Watt power handling and 8 ohm impedance Frequency response: 30Hz - 20kHz Cutout dimensions: 14" x 6-3/16"; Unit dimensions: 8" x 15-15/16" x 3-7/16"