-> Well... SOME people can tell the difference, especially with vocal
-> parts (spoken, in particular), whether the speakers (or even *a*
-> speaker) are in "proper" positive phase.  I've noticed a slight
-> difference on some material, in the right circumstances (a
-> well-treated control room with proper monitoring).
->
-> I'm not sure that could be determined in a double blind test, Matt. but
-> every attempt should be made to have the speaker making a forward 
xcursion
-> when applied with a positive signal.
I have been around a couple setups where the differance was -always- 
noticable,
but as to which sounded "correct", could be debated forever! :-)
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