I finally have my GIK room treatments arriving - in theory - this week.
So, having had a home built purposely with an audio room in the basement, here's where I'm at.
Had the idiot contractor perform a number of "treatments" to my 2 channel room. My room is 15' wide by 19' long with the backwall being a bookcase that houses vinyl and other props.
The walls were supposed to have rockwool which was ordered and placed in rolls in the room. Someone forgot to tell the installers that the rockwool was supposed to go in this 2 channel room. It went every else except for one wall. Also, the wallboard I presume are or were supposed to be

not connected to the studs, there's a name for it but I forgot. Getting old. Anyway failure there but the room sounds great. Mostly due I think to the open baffle speakers, Spatial X3's. They are located out into the room maybe 5 ft and the couch seating position is similar. We have moved and tested various positions and this seems to work.
I currently have a pair of 2' by 4' panels located behind the speakers. Also have some wool rugs located in strategic places. Looks nice and again, the room sounds great.
So why the GIK room treatments? Because the room is at least the 2nd if not the first determinate of SQ, period. So I at least ordered the bass traps. I also ordered 4ea 2' x 2' acoustic panels absorber diffusor type.

My first inclination is to place them behind the speakers and move my cheaper wool panels to the center. Looking for a starting point here. Thanks!