The rationale behind a ring radiator—imagine a ring suspended along its inner and outer circumferences and driven along a circle midway between the two—is that it combines a large driven area with a relatively short distance between the point where the diaphragm is driven and either of the two points it's suspended. The short suspended distances reduce distortion products, and the large driven area increases sound-pressure-level capability and allows the tweeter to be used at lower frequencies. This last benefit supports AP's desire to move the midrange-tweeter crossover from 3kHz—where it could affect female vocal and violin reproduction—to a theoretically less intrusive 1.8kHz.
av Kraniet » 2003-11-03 17:21 
