Bowers & Wilkins CWM664 In-Wall Loudspeakers are distinguished by its 25 mm (1 inch) soft dome tweeter. It brings smoother and more detailed high frequency performance to a package that also includes a Woven Glass-fibre 150 mm (6 inch) Bass/Midrange driver and three-position high frequency switch to fine tune the sound. Installation is catered for by a simple and effective QuickDog™ fixing system. The CWM664 is elegantly engineered and cost-effective route to high quality in-wall sound