I hope this ad is like 20 years old, 'cause that's a pretty poor 'shop.
I don't know why the "Tekton-style" driver arrangement is viewed as odd, it's pretty much a natural thing to arrive at if you know anything about physics. For a point source you'd end up with something that's ideally concentric. I tried similar concepts with a bunch of midwoofers (or widebanders) dotted around a tweeter in Boxsim for a tentative DIY project codenamed "Il Monstro"; I could never make spacing small enough for dispersion to look really good. Oh well.
Behold the trusty Grundig Monoliths (late '70s, early '80s). Grundig had actually been making active speakers since some time in the early '70s I think. Some of their stuff was pretty good. Possibly still underrated. A Monolith is clearly not something for everyone, I imagine they work best at sizeable distances as the vertical directivity keeps ceiling and floor reflections at bay.