How much room will you have behind your screen? I cant remember what CC you went with in the end. Vert OW180?
I would leave wall behind and beside LFRs open a few feet all around. The LCRs in my room have open back “Mid tunnels”. I had to remove absorbent SBIR traps. They sounded lifeless and dull. Smaller.
The neat thing about front wall diffusers is they work with lower frequencies and late reflections. Huge clarity benefit. I always say it deletes your impression of a fixed boundry, great for a huge screen with a diorama effect. A QRD is a great choice in this spot as you can make it deep with no penalty to room footprint if behind screen.
Pair that with the pop of a calibrated LX-NZ3….. just stupid good.
