The magic garden tutorial seems to indicate placing speakers where they excite room modes is ideal? This is contrary to the purist philosophy of sound reproduction techniques. -but definitely valuable if low frequency augmentation is the goal.

Sitting near the rear wall is also mentioned. If room modes are intentionally excited, the rear wall is probably a good bet to ensure the mlp isnt in a deep null as a result.

Nick and I touched on speaker placement as a speculative design factor in his build thread. I'm glad you posted this link to consider factors in my own room. I found hints of this technique in F.Altons Everest books, but never a direct reference.

Thanks again for the link! Fascinating.