Pryso, I could be mistaken about some of the details, but, John Dunlavy might have made some prototypes(?) of a statement speaker (Magnumns?) that had active digital cross-overs and separate digital amps for each driver in a rather oddly shaped cabinet that appeared to look like 2 triangles mounted upon each other at a single corners that had flat baffles. The digital cross-overs were to electronically correct for the timing issues of the various voice coil depths. Apparently this avoided the cupped horn loading problems of the stepped baffles. I think John Dunlavy was waiting for higher resolution digital devices to become more of a marketable item to make the speakers more reasonably priced. John told me that this was the future of his designs, and he hoped that as the digital technology developed, it could be trickled down to his less expensive products. He believed that the digital technology could cut the costs of the then necessary labor needed to hand match each set of speakers. Unfortunately, poor health took over before he and us could realize the promise of his brilliant ambition.