KEF iQ60cBL Center Channel Speaker (Single, Black) (Discontinued by Manufacturer) 3-way bass reflex center channel speaker 2 x 130-millimeter (5.25-inch) woofer, 130 millimeter (5.25 inch) Uni-Q, 19 millimeter (0.75 inch) aluminum dome tweeter Fully curved enclosures minimize distortion by eliminating internal standing waves Features KEF's "tangerine" waveguide for smoother, clearer high frequency response Sold as a single speaker