Another note, yes my stand for my Diablo’s is a heavy wood stand that is very low and very wide. It’s less than 1.5 ft tall not including the gear itself. I’ve always thought my imaging performance was good, but maybe it would be better without the stand there. Either way the gear is well below the mid drivers.
My room is also huge, as my house is open concept. Ceiling is vaulted and high as well, 12 ft at the peak. Room is about 900 sq feet, but the area my system is in has a tall island that acts as a partial wall on the left side. In other words the large room is broken up a it.