FCP on M1 Mac Mini doesn't see audio interface

We purchased a PreSonus 68c interface to have high-quality audio monitoring from FCP 10.5.2 on an M1 Mac Mini. However, the interface doesn't appear in FCP's Window menu. A/V Output is greyed out. The OS is 11.3.1 and the interface appears and is selected in the Sound System Pref (input and output). Also, it appears in the System Report on the USB bus. The 68c interface is plugged into one of the USB ports on the M1. Any thoughts are much appreciated.

Audio interfaces won't appear in the A/V Output (meaning combined audio/video out) in the preferences, that's for video monitors that FCP can output a broadcast signal for color and quality monitoring.

Audio output will be handled by the OS (system prefs), not by FCP itself.
Audio input will be handled by the Input control of the Record Voiceover tool, command option 8.

The audio from any app that can produce it is sent to the destination chosen in the Sound section in System Preferences and can also be selected in the Speaker item in the main menubar of the Mac.

Go to System Preferences and choose Sound. Choose the Output tab at the top. Your Presonus 68c should appear in the list. Select it and also select 'Show volume in menu bar' at the bottom of the window.

Now if you want to switch to any other audio output and back again, you can do it by clicking on the speaker icon and choosing the device.

I am not familiar with the software packaged with the Presonus, but make sure the interface is configured for operation at 48kHz and not 44.1kHz operation.

Thanks. I now see that the audio does appear on the interface. What's odd is the interface isn't connecting properly to the SPDIF input of the Yamaha DM-1000 console, while playing a track in the finder does. I have to wire a couple of TT Bantam patch plugs to XLR female cables and see if the analog audio plays out of the interface. 

It sounds like it's worth checking that the Yamaha is set to 48kHz as well, as you won't get audio otherwise. Just in case, there is also a sample rate converter facility on the 2TR input which should lock to anything, but it would be best if the desk is working at 48kHz.

Thanks, Rinaldo. The DM-1000 is set to 48k and SRC is on as well. It's weird.

John Fishback wrote: Thanks, Rinaldo. The DM-1000 is set to 48k and SRC is on as well. It's weird.

I hardly dare suggest it, but have you assigned the 2TR input to an input channel? It's not like a lot of analogue desks where the 2-Track input bypasses the main input faders part of the desk, you have to make it a source to the desk by assigning it to a fader channel.

Just a thought.

The inputs are assigned. The desk has two digital stereo ins-one is AES and the other is SPDIF. AES is 2D1L & 2D1R and SPDIF is 2D2L & 2D2R. The AES connection is from a Decklink 4K card in another computer which is off when I'm using the M1 Mac Mini.