Energy CC-10 Center Channel Speaker (Black) Exclusive Convergent source Module (CSM) features woofer and tweeter uniquely integrated for accurate dialog and convincing sound effects. Dual 5.5-Inch Woofers feature patented Ribbed Elliptical Surround suspension for greater dynamics, output and lower distortion than conventional designs. Exclusive 1-Inch Hyperbolic Aluminum tweeter provides high frequency accuracy, high power-handling and wide dispersion Rigid, low-distortion MDF enclosure with attractive Black Ash Finish and Black High Gloss trim. Port plug & rubber bumpers for bookshelf use included. Special Shipping Information: This item cannot be returned to Amazon.com. For additional information concerning this policy, please visit our Product Specific Returns Policy Page