Energy CR-10 Surround Speakers (Pair,Black) Bipole/dipole rear surround Bipole/dipole switchable design fills sides and rear of room Two .75-inch aluminum dome tweeters for clean high frequencies 4.5-inch woofer with Ribbed Elliptical Surround for deep bass Black ash finish looks great anywhere Exclusive Convergent source Module (CSM) features woofer and tweeter uniquely integrated for expansive soundstage and convincing sound effects. Unique surround speaker array and technology creates exceptional surround effects yet still provides exceptional detail for film, gaming and music. 4.5-Inch Woofer features patented Ribbed Elliptical Surround suspension for greater dynamics, output and lower distortion than conventional designs. Dual 3/4-Inch Hyperbolic Aluminum tweeters provide enveloping theater experience with added high frequency accuracy, high power-handling and wide dispersion Easy-to-hang wall bracket included.