Ah, I got it. You want to go from. 7.1 TO 7.1.4? I think that is correct.
Again, Atmos will correct anything. How it sounds when it's done, that's up to you. You can still fiddle with it afterwards. Might want to look at a little more bump in the middle, 7.2 or 4.4.
Yea that IRS system with active servo, is not gonna work right with an Atmos system.. I wouldn't want to try.. They are pretty nifty, I love columns, anyways. I've heard the IRS V also, after the crossovers were rebuilt. That was a night and day thing for sure. I've heard at least 4 of the IRS Beta. I keep going to listen, to them, (they are for sale), but I can't seem to pull the trigger.
I heard a trinuarl, system with 4 servo bass columns, and 3 IRS Beta monitors. Completely analog. The outside monitors, rear sections were fitted with 3" thick very dense foam, top to bottom, the center was a wide open dipole. I liked that system.. 50,000.00 at the time WITH ampzilla power amps. One of the best at the time I'd ever heard. 1999 - 2003,
It wasn't Huge, HUGE, either, I could move all their columns, pretty easy..
I still have a pair of RS2B, 4Bs, two pairs of .5 and 1. Infinitesimals (killer top surround speakers for sure). Great little stand mount/bookshelf speakers. They are actually made to ceiling mount, come with mounting hardware. Early Infinity was HARD to beat... Still is for the money in my book.