I am aware that there should be a minimum seating distance when using diffusion to avoid phase artifacts. However I believe that the distance is based upon 3 times the lowest frequency being diffused.

So say I build a diffuser that goes down to 300 Hz which would be 3.75 feet in terms of wave length, multiplied by three I get a minimum 11.25 feet seating distance not doable for me.

However If I build my diffuser to tackle say 600 Hz (596 HZ) I would have to only sit 5.62 feet away from it which is totally doable.

If I designed it with a well width of .5”, a 6 ½” depth and 7 wells per period I could diffuse 596 - 13560 Hz which covers a decent range.

Assuming that it is three times the lowest wave length and my seating distance is correct, does the frequency range look good enough? I would add absorption for the lower frequencies to help with those of course

I have heard a room with diffusion and really enjoy what it can do so this would be great to have.