CWM8.3 D is a three-way in-wall speaker. It features a decoupled Diamond dome 25mm (1 inch) tweeter, a 130mm (5-inch) Continuum FST midrange drive unit and two 180mm (7-inch) Aerofoil bass drivers. The central baffle is rotatable, so CWM8.3 D can be used in either vertical or horizontal alignment.