Center channel speakers easily carry the 50% or more of center channel info delivered in multi-channel sources for home theatre systems. The Polk Audio CSI A4 Center Channel Speaker has an aimable cabinet to give you placement flexibility and finer sound-tailoring for your high performance home theater system. The CSi A4 features the latest generation of Dynamic Balance polymer composite drivers for smooth wide-range response with low distortion as well as a 1-inch silk/polymer dome tweeter to deliver better sound detail. You are assured classic Polk performance in a design that speaks to today's high-end home décor. True performance art.