Mixed Use Room question-Acoustics Forum-Acoustic Fields Forum

My 2ch system shares a room w/ a totally separate Atmos system. I’ve been wanting to address the wall behind my 2ch speakers (which sit 60″ into the room) and have wondered if a curtain I could pull across the screen during 2ch listening would benefit the system enough to justify the effort. The screen is what prevents me from being able to place a diffuser on that wall, and I’ve yet to apply any other acoustic treatments in the room. (room is 17.5D x 11.5W x 9H)