If you're thinking about using them as stand alone open baffles, then you'll need to search the drivers with a high Qts greater than .7 Only a few of his offerings would work for you mainly the 12" and 15" variations. NOW if you were open to the idea of using your Cornwalls as a bass cabinet and using this drivers as a mid/tweeter in an open baffle, you have lots of choices. Friends who have heard David's drivers have been generally impressed with them. Seems like they favored the 10" version in a box, but I'd go smaller if you're thinking about letting the Cornwalls do bass duty. You've got plenty of amps to do biamping, so grab a Behringer or mini dsp crossover and have some fun. Good luck with your project.
