The CDM 7 is an imposing floorstander which not only makes the best of the real wood veneer finish, but also means extra volume. The 165mm Kevlar® mid/bass combined with the additional 165mm Cobex® low-frequency driver, delivers a bass response as tactile as the beautifully crafted cabinets themselves. T echnical highlights ● B&W's Tweeter on top technology ensures that the sound remains focused and time-sensitive and that the stereo image is presented with unparalleled three dimensional accuracy. Kevlar®: B&W developed and patented the method of using Kevlar® for loudspeaker cones to reduce unwanted standing waves. DuPont originally created Kevlar® for use in bulletproof vests.