-3 -2 -1 0V 1 2 3 4 5 6 0 XCO BOGAUDIO 0V = C4 = 261.63HZ FINE SLOW FM FM DEPTH EXP LIN PW PHS MIX OUT SAT PHS MIX OUT SAM PHS MIX OUT FDBK PHS MIX OUT V/OCT SYNC MIX