Hi everyone, thanks for the responses.
The back and side walls are floor to ceiling covered with Joanne Fabric's "Duck Cloth Canvas" Fabric
. They were assembled by creating 1x2s and stapling the fabric behind the frames, then velcro'd to the wall.
I'd like to still try and use some of the frames if possible, they were difficult to assemble and I felt triumph on completion of them - lol.
Thanks for REW, I've heard of it before when reading about subwoofers/etc. This is good knowledge for me considering this is not my real theater room, and I plan to do an IB array in the real deal - I will need to get all that stuff calibrated.
I also have laminate flooring
in this room, it's been stagger studded 15x16 with a solid core door if that makes any difference. I know square is not the best for a theater for many audio reasons, but I have to deal with that.
It is definitely dead sounding where the speaker is very localized, but it's not in any other room; I will read that article and try a few things and get back to everyone. I prefer my front speakers to not be localized and to image correctly (i.e. if you close your eyes, you can't directly place where your speaker is, and it throws a sound stage). There are very specific technical aspects I don't always follow, for example if we do just a simple channel level calibration - I typically run my Epik Conquest subwoofer hotter than calibration, just because I like it like that - I think that's normal with many home theaters though.