Energy RC-Mini Center Channel Speaker (Single, Rosenut) Single compact center channel speaker designed for a large or small space surround sound solution Equipped with a 1" aluminum dome tweeter and two 4.5" Kevlar(TM) cone woofers Patented Ribbed Elliptical Surround technology Frequency response: 78Hz-23000Hz +/- 3dB May be wall mounted horizontally or vertically