Re: Danley SM80 and others shootout Monday January 14 at Danley in Gainesville, GA.
The heavier one was the original TH212-but only existed as a prototype and as a spec sheet for a very little while. It however was the inspiration for the TH112. I tole Tom "What if we cut it in half and moved the exit 90°?" We did and the TH112 was born.
The "other" one you show is the same cabinet-just a different version. There are install and "touring" versions. The install does not have wheels and does not have the cutout for the wheels and no handle cutouts-for a cleaner look. Yes the wheels are a bit odd in their placement-but that was the only place they could go and still be a tilt back and not interfere with the horn path.
I am surprised that you didn't find a "4th" version-which is exactly the same-except the exit hole has been moved to the large side. All cabinets have this built in and is user changeable. When it is used this way you have boundary for the exit-and the physical usage is very different-ie it doesn't stick out from the wall very far at all or hang down from the ceiling much and is easier to hide above a ceiling.
If you put 4 of them together with the exits in the middle you have a pretty large boundary (6'x6')-so you start to pick up directivity. There are a number of these in use-particularly in places where directivity is needed-such as basketball arenas.
