Good afternoon, our church has a Qu-24 and we are using Mix 9-10 for our livestream feed. We typically have 9-10 muted until service starts. Our pastor does in house announcements before we go live. The last 3 weeks his mic and our hand held mic are not being muted when the 9-10 master mute is on. It has been working correctly for 2 years until recently. Can someone point me in the right direction to track down this issue?
Thanks
Has 9-10 accidentally been changed to a pre fader send? Unlikely but worth checking nonetheless.
Looking at the block diagram, it seems to be impossible that anything would be heard at the corresponding mix output sockets 9-10 when Mix 9-10 is muted.
It’s conceivable, however, that your stream mix isn’t being used by these sockets, but is routed through one of the two matrices and sended to their matrix output sockets.
In this case, it would be entirely possible that even with Mix 9-10 muted, other channels in the stream mix could be heard if they were also sent to this matrix via some route.
I did a quick check for that before service yesterday and it appeared it was pre-fader, but I want to revisit that this week . Thanks for the reply.
Impossible is exactly what I keep thinking, especially since it just started this several weeks ago. My weakness is understanding routing and how to track down issues like we are having. We are going to look into it this week, so one thing to start with is checking 9-10 directly on the board and leave the livestream off, right? If the master mutes it we know it’s as you say and in the routing. Thanks for your feedback!
Unfortunately, I can’t quite follow you.
In my opinion, the first crucial questions would be whether and for what purpose you might be using matrices, and which physical sockets you are using to output your signal for the stream.
Our A/V system was installed before I came on board and so as a person with no experience on a digital mixer I’m trying to learn and understand as I go. What I know so far is that I don’t think 9-10 is routed through a matrix, but goes directly from the 9-10 socket to our Data Video system. We are using an IPad to run 9-10 so it can be monitored by the person on cameras. The odd thing is that 9-10 mute was working correctly. I’m the only one running the sound board and haven’t changed anything recently. I tried switching the board to 9-10 and muting and the Pastor’s channel came through. So circling back to what you said, could it be coming from a mix or group and bypassing the mute?
As I already wrote, in my opinion, this would only be possible if your mix 9-10 and another one were sent into a matrix.
If you use the 9-10 output jacks for the stream and mute mix 9-10, I don’t see any way that any other signal could be output to 9-10 (see also image).
Unless your mute button is defective and mix 9-10 isn’t muted at all.
In that case, however, I would assume the mute button wouldn’t light up either.
Thank you for help. It’s nice to get advice from someone experienced. I can stop looking in all the wrong places. This eliminates a lot of trial and error for someone just starting out. Thanks again!
Could it also be possible that the Pastor’s mic has somehow also been patched as a Direct Out or tie-line to outputs 9/10?
If it is a Direct Out, it can be set up to ignore mutes.
I could also be way off on this, but might set someone on the right path.
If you wanted, you could send on your showfile, letting me know the scene you use, and I can see if I can find anything amiss.
That’s something to check out. I’m going to dig into it tomorrow, we’ll see how it goes.
Thanks for your reply!
Of course, I could be wrong, too, but as far as I can see, Mix 9-10 is permanently connected to the output sockets 9-10 (see the red lines in the image above).
Therefore, nothing else can be patched to these sockets.
And even if you could patch a Direct Out there, that channel, e.g., the pastor, would be the only thing you would hear in the stream during the event, which is certainly not the case.
And unfortunately, the console doesn’t have tie lines either.
Valid point. Wasn’t sure if the console had tie-lines or not. Thought I’d mention it just in case anyway.
To be at least relatively sure, the easiest way for me is to look at the technical documentations.
You can usually download it here:
Yes mix 9-10 on the mixer are hardware patched to mix 9-10, if your using a stage box that would be another topic.
Muting the master on mix 9-10 mutes all channels sending to that mix does not matter if they are set pre or post fade that mix output will be muted.
As mentioned if mix 9-10 is sent to a matrix and that matrix is also receiving another mix from those channels that would be an issue.
How is the audio being sent to your live streaming equipment, computer, video switcher, ect? Follow the cables and see where it connects on the mixer, it could be the mix 9-10 outputs, a matrix mix output or the ALT OUT 1/4 inch jacks.
If below is the case there are a lot more variables that can come into play………….
Depending on the live stream equipment it may be connected with the USB B output and send the audio directly to a computer and the streaming software was / is taking mix 9-10. If the USB connection is how the audio is being fed to the live streaming system that could also be where the audio from the channels that are not being muted is getting to the live stream. The USB output is a multi track/channel audio feed that can send a channels direct out to the connected equipment. If that is the case the USB output on the mixer may need to be re patched and or the live stream equipment was reset and is now also pulling audio from audio tracks it does not need. The mixers USB output patch would have to have been changed at some point to patch mix 9-10 to a set of output tracks.
Since this was working at some point maybe a scene was recalled on the mixer that changed some settings or maybe if you are using a USB connection something changed in the streaming software.
This is going to be a good learning experience for trouble shooting and deeper understanding for the mixer operation.
If all else fails maybe find someone in your area who truly knows the QU mixers for some on site help and training.
Update on the 9-10 mute situation, it’s been fixed. First I want to thank everyone for their input. It helped me to troubleshoot this issue.
We are using one channel of 2trk out to feed our hearing assist system. Our Datavideo is being fed by Alt out, not 9-10 out as I thought. Somehow 2trk R was being fed to Datavideo along with Alt out L, so the signal from 2trk R was what we heard even though 9-10 was muted. That explains a few other issues we were having.
Thanks again to everyone!!
(Still don’t know how that cable got moved.)
Keep in mind the ALT OUT can be patched to any of the mix outputs, by default it is set main L R.
Go to the IO set up menu and under the tab “surface” you can check what the ALT OUT is patched.
The AES output XLR is a digital PCM two channel output, you can not use it for any analog audio connections.
I suspect that (during their daily cleaning 
) someone unplugged plugs that are right next to each other and swapped them when plugging them back in.
But it’s good that it’s been resolved.
