USB audio cutting out when setting mic levels on mixing desk

Picpic

New Member
Hello,
I'm using OBS to record events, with audio input coming from a Mackie ProFX6V3 mixing board connected to my laptop via USB-C. I monitored the audio on the mixer throughout the recording, and everything sounded fine. However, when I played back the recording, I noticed several audio dropouts lasting 10 to 20 seconds.

The audio seemed to cut out in the recording whenever I adjusted the mic levels on the mixer. Now that I think about it, I remember seeing the USB input level in OBS drop to zero every time I made even the slightest adjustment to the mic levels. There were no audio issues on my PA system or in my monitor headphones connected to the mixer.

I checked Mackie’s FAQ but didn’t find anything helpful—USB audio shouldn’t cut out, even if an input is clipping.

My OBS configuration is mostly default; I simply added the mixer as the main audio input.

Could a default setting in OBS be causing this behavior?


Thank you
 

Picpic

New Member
After google-ing for a bit, the explanation could be:
  1. Mismatch between sampling rate of the mixer / sampling rate in OBS
  2. Mixer audio device not set in "exclusive mode" in Windows (?) --> I haven't found where to adjust this setting yet
I'll keep a log of my investigations here - I've come across a few threads discussing the same issue on this forum (audio loss / "[device] invalidated" log entries) without real solutions
 
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