McIntosh's Multi-Midranges

I know of speakers where, depending on the crossover, the same 5" or 6" driver is used as midrange or as woofer, but I've never encountered a speaker where a driver normally designated as a tweeter also functions as a midrange. This is the unusual design approach taken by McIntosh in some new speaker models, including the $10,000/pair XR100, and, judging by the sound, it certainly works for them. The driver is a 2" metal dome: eight of these are combined to serve as midrange, with two more as the tweeter flanking a supertweeter.