More on Amazon.com : http://www.amazon.com/gp/product/B0062PAWGY?tag=purrfectcatdi-20 <br /> <br />Polk Audio LSiM 704c Center Channel Speaker (Midnight Mahogany Each) <br /> <br />Polks exclusive dynamic sonic engine design optimizes the midrange driver and the ring radiator tweeter in separate interior chambers for improved transient response superior imaging and greater horizontal off-axis response <br />Enhanced reengineered ring radiator tweeters extend top-end response for incredible details and realistic imaging <br />Extended Linear Motion voice coil design allows lots of movement in a limited space eliminating impedance and extending mid- and high-frequency response <br />Klippel motor optimization uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes
