Rear wall-Acoustics Forum-Acoustic Fields Forum

Hi, My rear wall is 7 feet behind my listening position. I have read that 10 feet distance is needed to allow diffusion to properly open up. Does this mean I should be looking toward absorbtion or no treatment for the rear wall? Some back ground info: I have done a sonic evaluation using REW software
to determine the placement of my speakers and listening position. To my pleasant surprise the predicted locations matched the analysis after placement: The predictive model was correct based on my room size. My room is 21’2″ wide and 28′ 4″ wide. 15 foot vaulted ceiling in the middle which starts at 8 foot on each end of the room. It’s about 6900 cubic feet.