That’s a great video -thank you.
I just made my own cylindrical absorber/diffuser – I am a terrible for construction of any kind, but I just had to try anyway.
I may clean up the final ‘look’ but mostly they are quite hidden and very functional. I used these ‘board’ cylinders (photo is remaining of cut cyclinders which come in 4m lengths) and wrapped with two layer of amazon purchased absorption material and used a spray only ‘bond’ which surprisingly worked very well. So 2″+2″ with varying depth as sound waves pass different points of the curvature (if I am not mistaken)
Positioned at or around convergence spot behind the speaker they really improved soundstage and depth of soundstage rather more dramatically than I expected.
