Howdy all, hey Dawg, I'm no expert at these things. I was just asking about the airspace to find out what other people do, not to tell you there should be one.

From my understanding, if you only use 1", then it probably would be better to have the airspace. But 3"sounds great. I've heard it myself at the front of a control room, sorta like LEDE. Man, with the whole front of the room, walls and ceiling, completely covered in fabric covered 3" 703 panels, right up to the console, the sound was absolutely transparent. Blew me away how good it sounded. He had 3 polycylindrical diffusers on the rear wall, which I really don't know if they really contributed to the overall sound cause I never heard it without them, but crap, I can't wait to do it to mine, along with a few panel traps and a large quadratic diffuser and a slot absorber on each side at my back wall. That is if I have room. I haven't laid out the diffuser yet. Anyway, good luck with your room Hangdawg.
Oh, btw Ethan, thank you so much for the info on the other thread, I never got back to thank you. I just read a bunch on your site, so I AM paying attention and not just bitchin and moanin about acoustics

Its just a matter of moola with me.. you know....dollars and cents. The stuff the wife don't let go of easily even though I make it

Ha! Too many damn cats to feed

Arrrrgggggrrrrrrrr......!
fitZ
