Erik,
It may be comb filtering indeed that makes it audible. A frequency response anomaly rather than actually hearing wavefronts or phase seems more believable as to being audible.
@millercarbon
Some do hear it but most people don’t seem to be bothered judging by what I see on Audiogon systems
http://arqen.com/acoustics-101/speaker-placement-boundary-interference/
It may be comb filtering indeed that makes it audible. A frequency response anomaly rather than actually hearing wavefronts or phase seems more believable as to being audible.
@millercarbon
Some do hear it but most people don’t seem to be bothered judging by what I see on Audiogon systems
http://arqen.com/acoustics-101/speaker-placement-boundary-interference/