There is an issue with magnets being so tightly packed in an array like that. I've used this concept on two occasions in DIY apps.The thing I can't see getting around, is simply how to get drivers to tight pack together so 1/4WL coupling occurs, through the freq spectrum.
Best illustration of that l goal I've seen is this...snipped from a TDanley patent.
I'm almost positive is was the same less the exact drivers. 1996 or 1999.
A lot of work for very little result. It just doesn't work because of the number of drivers. Truly a masterpiece of complexity for
no reason at all. The time to make that! You could build the Space shuttle quicker. LOL
One of the very neat things about concentric drivers Ellipticor A50 Scan-Speak it covers all the bases an array like Mac. Tekton
Polk, Bose, and many more try to cover with multi-driver concepts. They won't fill a stadium, LOL but the are a marvel to listen
to. Give me Tannoy or give me Line Arrays.
I had MX100s for quit a while, compared to the Moab in a treated room, few would complain in a blind test, both work VERY well,
once you understand how they work. The Moab I used had low/high binding post. It literally was night and day between single post.
There were ZERO braces in a Moab cabinet. The long panels did resonate with the pro drivers. MX100, not a bit, much better
cabinet construction. The ability to turn down the bass section was the key with my sub/bass setup.
I use/used a bass columns/servo-subs DBA. Anything works in that setup if you can control the bass in you mains. I just cut the
wires to the bass in the single post Moabs I used. There is a LOT of room an a Moab cabinet. It needs a mid bass coupler and
HiFi sub drivers in a 4 way. Not pro drivers. The compound array is pretty friggin' nice. I'd add a ribbon for the HF tweeter though.
Better than most speakers for the money actually, if your listening with your ears not your eyes.
Regards