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Thread Starter 
Long time lurker, first time poster.

I'm setting up my new VSX-521-K, and during the MCACC setup, it has a long pause (5-6 seconds of silence) before it sends the tone/static to the rear left speaker. It then plays the noise without issue, but then says I have no rear speakers. If I manually set the configuration to two rear speakers, it fails during the following step (presumably because of that pause).

The speaker itself does work fine; the only issue appears to be that for some reason, it takes 5-6 seconds before it is able to send tone to the speaker. I can't find any reference for this anywhere - has anyone ever experienced this, or have any idea what might be at play, here?