KEF C5 Floor Standing Speaker (Single, Black) (Discontinued by Manufacturer) 2-way bass reflex floor standing speaker 19-millimeter (0.75-inch) aluminum tweeter, 2 x 130-millimeter (5.25-inch) mid-range/bass drivers Slim, internally braced cabinet Features KEF's "tangerine" waveguide for smoother, clearer high frequency response Sold as a single speaker