Right, I have played around a bit and have come up with the following wiring diagram.
Disclaimer: I have not tested this, this is a first draft and I am open to feedback and improvements!
It looks a bit convoluted, but this achieves:
- Full sound mix available to FOH and Stream
- A mix-minus to the Zoom participant
- Re-using an SD MixPre 3 (no need to purchase new audio interface)
- Using audio coming in over HDMI, (lav mics synced to the individual cameras)
Also, not in the picture are eventual audience video monitors, but it shouldn’t be a problem to feed them from the V8 without extra equipment.
The SD Mixpre 3 acts as an audio interface and needs to be configured to send mix-minus back to the Zoom Caller via USB, use the the video as your baseline.
In addition, the stereo out of the MixPre needs to send the caller’s voice only to the Soundboard. I have selected this to be mapped Channel 2 on the soundboard, but you are of course free to choose whatever you want.
The Roland sends the audio from the videos to the soundboard via audio out, this together allows for a “full mix” available in the sound board, which can be sent to the FOH / PA System
The soundboard also sends back the sound of the caller back to the V8, which completes the “mix” in the V8, which can then pump out full mix to the LiveU Solo or whatever encoder.
I haven’t found a simpler way of doing this, but in essence this should work.
One thing that would probably be a bit “fiddly” would be syncing Zoom Video to Audio for the PA, but the MixPre allows to delay the audio a fair bit.
Finally, I am routing caller audio back to the V8 from the sound board, but this may not be necessary, as the audio already is contained in the HDMI stream from the Laptop. If you try this out, let me know which routing bears better results.
As to your choice of sound boards, they should all work, as the mix-minus is essentially done in the MixPre. I am currently eyeing the Presonus Studio Live 16R, which is overkill as far as inputs and outputs are concerned, but it has a cool rackmount form factor which would fit into my 19" rack setup, where my Hyperdeck Mini, and the POE switch lives. That’s personal preference though and the setup could definitely be achieved with a cheaper mixer.