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.
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.