This technology (which consists of a specific woofer/tweeter layout) offers both overpowering surround sound and precise placement of individual effects. This design also offers the user more sound options than conventional speaker designs. The two 5.25" Cerametallic woofers of this speaker offer a full, dynamic bass sound. The two 5" square Tractrix Horn tweeters will give an even high end, with a wide dispersion field (90 degrees by 60 degrees). The Klipsch KS-525-THX surround speaker comes in a Galaxy black finish.