The CDM 2 is designed for music lovers seeking the best possible sound from a speaker small enough to sit on a bookshelf. It delivers all the qualities which typify the CDM range, in its most compact and easily-installed shape. The CDM 2 features two pairs of gold- plated terminals to permit bi-wiring. T echnical highlights 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.