It’s a long story but I’m playing a mono wav through a stereo channel. I was expecting each side to be identical but they’re very lopsided and not in synch - you can see the peaks move apart and together. It proved very tricky to balance with the pan so I decided to separate the two sides out to see what I was dealing with. I did this by sending to two stereo auxes panned hard L/R and sending these in turn to two mono groups. Each had quite a different sound - one quite bassy, the other thinner.
Q1: Why is the stereo output from the mono file lopsided?
Aha, I thought, maybe I can use this to get some width by treating the thin signal as if it were an M/S side channel, so I have sent it to an phase-inverted aux and panned L/R.
Soloing the “side” pair and moving the faders up and down causes the balance between them to change from one to the other. If I pan them both centre, moving the faders causes the sound to fade in and out, only giving me signal where they were previously in balance.
Q2: What the hell’s going on?
I would be very grateful for any expert opinions.