After speaking with one of the well known manufacturers of acoustical products, based on their recommendation, for my new room I will be treating the front corners and first and second side reflections with absorption/traps; and the back wall with a few of their absorption/diffusion combo products. I will then evaluate further to decide if i need anything else.
Diffuse Front Wall? Absorb rear wall?
I'll research existing threads, but quick basic question --- is it a basic tenet that I should use a diffusing approach for the front wall and an absorption for the rear wall behind my listening position? I bought a wall rug, put it on the front wall, and though it seemed to quiet the room down in some good ways, it seems to have sucked some of the energy and sparkle from the soundstage. thanks.