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I just installed my Pioneer VSX-1019 and ran MCAA config twice.... each time it reported 3 speakers had polarity reversed (even though I checked and they looked ok).... Is this normal/common??
 

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It may depend on the brand of speaker and it may be normal due to the phase coherency design of its tweeter and other drivers along with it. So I may blame the speakers design for maybe confusing the receivers auto setup. This is not to say there is anything wrong with the speakers design. I ran into this when I had a Yamaha receiver and ran YPAO. I have Kef for speakers and suspect that the UNI-Q tweeter design with the midrange driver is the culprit. What's funny though when I got into a Denon with its Audyssey, it was not throwing any reverse polarity errors.


What speakers are you using?
 

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My Bose 10.2's get flagged as reverse polarity every now and then because of the multi-firing speaker units.


However I have also had MCACC be very accurate with truly miswired speakers I could have sworn were right, but upon closer look, were miswired. So I would not discount the fact it occasionally gets a misread, but I would always triple check to be sure.


Diane
 

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The reason is not the loudspeaker but rather a reflection (peak/resonance) within the room.. When doing an install we always manually check the loudspeaker polarity before powering up the system..


Just my $0.015..
 
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