I have a source clip, with one audio channel set to mono. When looking at the inspector I also see the audio setting for that clip as MONO.
I see the audio on the FCPX meter (which also only shows mono). But I can not hear the audio as somehow this audio channel is being routed to CH3 on the output. I see this from my external audio meter de-embedding the SDI audio.
When I switch the audio setting of the clip from MONO to LEFT, for example, the audio maps to CH1 and I can hear it.
Why would the MONO setting map to CH3?
I am running the latest versions of every software on the system.