phase inverted preamps...about

This'll be interesting. I can't imigine there would be a difference.
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I have a Cary SLP-98L and a Joule Electra LA-100 MkIII and both are phase inverted. The Cary Manual sats to make the switch on the amp end. I don't have a Joule manual but was told to do the switch at the speaker end. So there you have it. As Ghostrider45 says it probably does not matter.

On the other hand I once had a pair of Spendor 7/1 speakers and took out the woofer to look inside. I found that the wire from the crossover leads to the woofer leads were reversed. At that time my preamp was not phase inverted, so I'm wondering if that configuration made the set-up inverted. I never could tell the difference when I switched the wires back.

I believe phase inverted and polarity inverted is two differnt things. Before switching polarities on speakers or amp better research info on the phase inverted pre. Hope this help.

If your speaker cables consist of two conductors made the same, just that one is marked red for positive and one is marked black for negative, then either way you invert phase you will still have one wire from the + amp terminal to the - speaker terminal, and one from the - amp terminal to the + speaker terminal. It makes no difference which wire is marked red and which is marked black.

Most people...if they do it at all, make the switch at the speaker end for no other reason than convenience I would think.

Dave