Invert ?

@mwh777  +1. Great explanation

Pual Mc educated me decades ago, except he incorrectly calls Polarity Phase, which he admitted. I  first learned about it when I had Genesis Vs with powered sub, which had RC of volume and Polarity. I discovered the biggest offender was bass Polarity. If you're looking for a sub IMO, best is one with RC of Polarity. That said Polarity/phase on a remote preamp or integrated is very meaningful to my ears

hth

I responded to Clark when he was writing for Positive Feedback. I believe our conversations were about polarity. Eventually we became friends. He would come to Ft Lauderdale and stay at my house: GOOD TIMES. I have several copies of The Wood Effect