Danny,
I bet they sound sweet! But wouldn't you get better mids and highs from using a line source of 6 neo 10s and 16 neo 3s?....and then use 6 8 inch servo woofs per side running on a separate open baffle from around 40Hz and then with a couple of 12 inch sealed servo subs in the corners? The mids and highs would have less back emf from the main amp, have less vibration from the woofs, be more sensitive, dynamic and transparent. No? I also think it would look cooler to have 6 8s on an open baffle then 3 12s in H frames. Since the mids and highs would be more sensitive then you can use a less powerful amp on them too and also you don't need all the damping when you are not driving 12 6 inch woofs.
By the way, BG Radia has a new floor standing speaker (model BG Radia FS-880) using 6 neo 10s, 16 neo 3s and 4 eight inch woofs in each array. Two of the woofs face forward and one on each side of the woofer section on the bottom. They come with a 1200 watt amp for the woofs. Looks like open baffle mids and highs and sealed 8s on the bottom. $35,000 list. Very slick and sleek looking affair. The best pics are on their Facebook page. One comment said it had an all Mundorf crossover. We shall see.