Here's another DIY speaker from a clearly dedicated and talented enthusiast. As before, of course, we have no way of knowing how this intriguing design sounds. But the driovers here are among the most well-respected. I don't know the woofer, but the midrange is a 3" dome from ATC and the tweeter a ring radiator from Scan Speak, used in a number of very expensive speakers. Building this, in this configuration, would clearly be beyond the capability of most of us. But if it were a commercial design it would easily command high in the five figure range .