Ok, so the measurements are done and treatment has been suggested.
One of the things I'm doing is putting superchunks in each corner behind the speakers (front wall). We calculated that in order to get the best results and smoothest response, I should cut the corner by approx 2m, giving 1m from the hypotenuse to the apex (inside corner).
Fine, no problem. However, it has been a problem finding a fabric that is 2m in width (almost everything stops at 1.4m or 1.5m), especially something with an open weave or light enough that air passes easily, yet is opaque enough to hide the pile of isolation in the corner.
Suggestions?
Thor