I'm running VMix 23.54 through a Presonus StudioLive Series III mixer. The mixer is connected to Windows 10 over USB and I have added it as an aggregate sound device. Using VMix Call, my caller can hear herself with an echo. I tested it at home between my Windows desktop and a Macbook Pro and got it to work as I wanted, with no feedback on the Macbook Pro.

Any ideas on what I could be doing wrong? I've been at this since 3pm this afternoon and it's now just after 10. I'm giving up for the night and thought I'd drop a question in before I go.

Thanks.

Thanks for responding! It's just one caller.

I'm about to test it again with a different caller to see if the same thing happens, just to make sure that it's something at my end. What has me confused is that it works fine between my hosting PC and my Macbook Pro at home when the MBP is calling in over the Internet.

I'll come back and report in an hour or so.

Still wonder if vmix will allow the user to add one or more of their physical microphone as part of the vmix call environment. I mean as far as you can't add any of your physical microphones into the vmix call as " ghost source" or something like that the mix-minus won't ever work on that mic... The worst part of the system is that you can't do it, so if you want to not have feedback for the callers you have to use inear monitors only , instead using a speaker for feedback of their voices... skype works diffrently for example, but hadn't the flexibilty of vmix call which allows you to chose not only the audio buss but also the video feed you send for every caller.

Hi Camuel,

I'm not sure how familiar you are with the Presonus Mixer yet. As KnKproductions wrote, you will probably have to dig into the routing of the Mixer, especially how USB sends and returns are handled. This might take some time. If you have some information for us, like KnK wrote, we can surely help.

If you need a quick fix in the meantime, you can do the following:

- Set your Master Output in vMix settings to Enabled, so it is just used internally, like for streaming, recording and return feed for the callers. Or do you want to use the vMix output for something else, like speakers?
- Set your Headphones in vMix settings to the output your are currently using for Bus A. This is probably the headphones output of your mainboard. Use that for monitoring.
- That way vMix won't send anything back to you mixer, and you callers won't hear themselves.
- What do you want to use Bus A for? You can also set it to Enabled for starters.

This is not the best use of the mixer, but as said above, it would give you some time to figure things out. Hope it helps.

We'll get you squared away, it is simply audio routing.

Try this...

-In vmix audio settings, change Bus A to "enabled",
-Can leave the headphones and main output as the presonus.
-Remove the audio input for the presonus in vmix
-Flip your mic to AUX1 in the mixer, run AUX1 direct to the microphone port on the pc (you'll probably need a separate cable to do this)
-Add the audio source for the pc microphone port in vmix
-Put everything except your mic on vmix Bus A and Master
-Put your audio source (your microphone port on the PC) on Bus A only
-Send the caller Bus A

Now, any sound coming from the pc goes to the mixer and you hear it in the monitor/headphones and does not return to vmix (no more feedback for callers). You'll still be able to monitor your input to the mixer as well.
Any other audio sources that go into the mixer must also go to AUX1 as well.

Glad you found your way!

for back channel chat, put them on a different audio bus. in the settings, set bus B and C to 'enabled'. Then put the guests on the alternate busses. Might be easier to call them 'channels' for this purpose.

Example, channel B (audio bus B) has the next two guests off-air but on-call. Their audio is set to only Bus B, and so is yours which allows you to talk directly with them. Switch them to your main output channel when they go live.

I'm free on saturday if you want a third guest :)