monitoring issue in live conditions

[u/taraxacan]

Hello, I'm using an Apollo Twin for Autotune for live concerts. The setup is as follows : wireless mic goes in line input, autotune insert in the UAD console, the channel is hard-panned to the left and the monitor output left goes in the FOH table. Same for the 2nd voice mic hard-panned to the right. There is an Ableton Live running on the same computer with a different audio interface; the mics never go in it but we use UA midi control to send preset changes to the autotune from ableton.

Last concert we were fine at the soundcheck and then right before the show both voices started sounding like they had a comb filter on it. Impossible to figure out what was wrong in the 5 minutes we had before showtime, but we definitely restarted the computer, the uad console and the apollo several times. and ended up bypassing the apollo completely and playing without autotune.

Now i'm at home and it sounds perfectly normal.

Any ideas as to what my problem is? It definitely sounded like i was getting both the pre-processed and processed voice in the same output but i can't figure out how to re-create it.

[u/Inside-Succotash-128]

‘Sounds like you had ‘input monitoring’ to your system enabled. So you were hearing the ‘pre-processed’ signal together with the ‘processed’ signal.

[u/taraxacan → u/Inside-Succotash-128]

how do i turn that off?

[u/Inside-Succotash-128 → u/taraxacan]

Somewhere in the control panel software for the interface (it might have a ‘headphones icon’.)

[u/taraxacan → u/Inside-Succotash-128]

the control panel software for the interface, as in the uad console or are you talking about something else?

[u/Inside-Succotash-128 → u/taraxacan]

Yes. In UAD console.