You got a lot of opinions on this Q! My reading is that the reflections off the back wall can reinforce the front at the right distance. My experience with Magnepan with sub is the back wall without absorption or deflection behind the speakers is best. I do have a bass trap on the back wall between the speakers. I'm in a pretty small room with corner bass traps and light absorption here and there. Informal Deflection at reflection points. Moving the speakers various ways was hugely useful. So was playing with my seat position. I got a totally flat REW curve and nice, wider than the speakers, sound stage. Happy experimenting!
Planar Speakers and Diffusors
I have the Clarisys Speakers. They are the Planar type. I would like to treat the wall behind the speakers. I have been told not use any type of sound absorber, so I am interested in the GIK Acoustics Q7d Diffusor
I have a large 85" TV in between the speakers, so the only area that can be treated is behind the Planers. Check out my systems page.
I have yet to find a review of these diffusors, so has anyone used these and can comment on the effectiveness?
ozzy