The Klipsch Reference Premiere Rp-504C Ii center channel speaker is built for premium home theater dialogue and impact. It uses a 90degree(s) x 90degree(s) hybrid Tractrix horn, 1-inch Lts titanium tweeter, and four 5.25-inch Cerametallic woofers. The internally braced Mdf cabinet, rear Tractrix port, aluminum binding posts, cork pads, and removable magnetic grille provide durable performance and a refined walnut finish.