I had a pair of Cornscala "C" version a few years ago. They were pretty good speakers, I did ALK crossovers, damped the mid horn and the rear panel. But there was still a slight "boxy" sound to the lower mids and upper bass. It didn't show up on all music, but once heard, it couldn't be "unheard". So I think I only kept them less than six months.
Oz