Wow thanx for the awesome analogy.
Couldn't have explained so clearly my self.

But they are totally related due to if we switched the polarity it would in turn switch the Phase. Which can cause such anomalies.
I actually learned that 9v. trick from an Axiom video with Debbie a few years ago.

I highly recommend viewing the Axiom youtube. Lots of info.
No B.S. As of recent there hasn't been to many released, but the older ones with Alan and Debbie have tons of detailed set up.

There's even one of turning your center upside down in case you'd like to put it really low. In the vid. Debbie even shows you, To simply turn the drivers so the Axiom badge is in correct place.