I’m running Octavox through logic pro and I’m wondering if there is a way to have the harmonies play the note written instead of the relative interval. So if I play an Ab, the harmony will be an Ab instead of a 6th above C.
If I'm understanding correctly, you'd like to have (as in your example) an Ab played, no matter what note you play into Octavox? If that's the case, then unfortunately Octavox doesn't have this capability.