Originally Posted by David Varner
All but two the two rear surrounds are going through the XPA7. I just flipped the POS and NEG of two speakers and now those two are detected by ypao as in phase. I placed a call to Emotiva and he is saying it is YPAO and if every speaker is saying it's out of phase then in reality they are all in the same phase. Which I totally understand. It still doesn't answer the question that with my previous amp my speakers were all detected as in phase except for my two surrounds which were always detected as out of phase (even though they are wired correctly).
Is there a definitive test to check the true phase of a speaker (correct wiring)?
A simple test that I've done in the past is to take a AA battery and touch the speaker wires to the battery posts and observe which direction the speaker cone moves. If I remember correctly, when connecting the positive and negative leads of the speaker to the + and - terminals of the battery that the cone should move out (away from its frame/magnet).
It still sounds to me like the XPA7 may be inverting the phase of the incoming signal on its way out.
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