KEF T301C Center Channel Speaker - White (Single) The KEF T301c measures 1.25 inches deep and includes two 4.5 inch double-layered mid-frequency driversm and a 1 inch aluminum tweeter. The T301c can be mounted to your wall, or be put on its own stand for added mobility. The T301c's 1 inch tweeter allows for exceptionally accurate reproduction, especially of the human voice and effortlessly pure high notes. The speaker also uses our radical new twin-layer bass and midrange unit, which acts as a whole to help eliminate any unwanted resonance from the slim cabinet.