Coaxially mounted tweeter and upper midrange The specially designed 1-inch dome tweeter is mounted coaxially with the upper midrange driver. The tweeter is unique in that it uses four radially magnetized neodymium magnets to power the voice coil. This, along with the long excursion, long gap structure, gives the CS7.2 tweeter much higher output capability and lower distortion than conventional tweeters. The upper midrange driver uses a three-layer sandwich construction diaphragm for extra rigidity to improve clarity. The diaphragm's special shape eliminates tweeter frequency response problems from the coaxial mounting. Both the 1-inch tweeter and 3-inch midrange drivers employ a short coil/long gap motor system for very low distortion, and both use aluminum diaphragms to reduce resonances and ringing for better frequency response and transient performance.
Lower midrange The 6.5-inch lower midrange is designed for outstanding upper bass and lower midrange performance. It employs a short coil/long gap motor system, 2.4 pound magnets, an aluminum diaphragm, and cast aluminum chassis for very low distortion and uniform frequency response. A copper pole sleeve maintains a stable magnetic field.
Woofer The 12-inch woofer uses an extremely large 9 pound magnet and a short coil/long gap motor system for exceptionally clean, deep bass response to 23 Hz with only one-tenth the distortion found in most bass drivers. The rigid aluminum diaphragm provides resonance-free operation for uniform response and very open reproduction. A heavy copper ring maintains an ultra-stable magnetic field.