I'm hoping for suggestions for a driver well-suited for the Eminence Beta 12CX, so any recommendations, especially based on personal experience, would be appreciated. I've owned a pair, still in the factory cartons, for quite awhile but never have followed through on a design. I've got two 4 cubic ft. cabs that would be suitable. An audio consultant named Mike Klasco had an article in Speaker Builder Magazine some years back in which he recommended the Motorola KSN 1188 horns and he recommended these because of their wide bandwidth, 800 Hz to 20,000Hz. I tried that one time for one speaker in an old surplus cabinet I had already cut for a 12 inch speaker, but was not really happy as it seemed like it would be more suited for sound reinforcement than home audio or studio. I think Mike was on the right track, however, in that I think the crossover ought to be lower than what I see often suggested for this speaker. I meant to try this Motorola again using John Risch's suggestions for piezo drivers and bring the horn in at about 1600 Hz, but never have. Eminence recommends a 2.5kHz turnover frequency crossover and their ASD1001 driver. I seems to me that would be too high for this 12 inch speaker. Thanks.