Ok, I'm going to take my screen down and do some changes to my setup, and thought I might do some more acoustic work back there while i was at it. So, I've been considering a baffle wall. Seems like a great idea for the front stage, but it won't do much for the rest of the room, so to speak.
The other option is to more or less fill any area that is not taken by speakers with some light insulation (approx. 5000rayls/m) from the actual wall and all the way to flush with the front baffles of the speakers. That is about 80cm or 2'6". I know we're talking about ALOT of damping here, but that's ok with me. Calculations tel me this huge basstrap will be pretty effective even down low. I have classic chunk-style traps in all wall-wall corners made of OC703-equivalent material (Rockwool, 25000rayls/m)
The bafflewall will do very little for me down low, and will potentially give me a little less SBIR. I get 6dB headroom that I don't need and potential construction issues with the actual baffle. I'm leaning toward the insulation experiment, myself. Easier, cheaper and potentially more benefit. I would assume packing the speakers with insulation will help SBIR maybe even more effectively than a baffle wall?
I'm thinking something along the lines of this: