Topic: Qu-16 bug? | Allen & Heath Digital Community

Qu-16 bug?

Tagged: bug, QU16 24 32, troubleshooting

This topic contains 24 replies, has 8 voices, and was last updated by [XAP]Bob 8 years, 10 months ago.

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2015/01/22 at 12:25 pm #44668

dmarin
Participant

Hello

Yesterday i used my qu16 (latest firmware) on a live gig.
I used six inputs (channels 1-6) and all the other channels empty.
After approximatelly one hour of use, i saw faders 15-16 rised up and channels 15-16 are linked! But there are not in tha same level, for example channel 15 was 0db kai channel 16 -10db.
I can’t image what whould happened if i have “used” that channels, with mics or instruments!
Have you faced something like that?

2015/01/22 at 12:27 pm #44669

[XAP]Bob
Participant

Nope…

Could they have been knocked? Were they completely linked?

2015/01/22 at 12:30 pm #44670

dmarin
Participant

No knocked and yes was completely linked!

2015/01/22 at 12:53 pm #44671

[XAP]Bob
Participant

So did you see them move up?
Was there a network connection (i.e. could someone have been using Qu-Pad)

2015/01/22 at 12:55 pm #44672

dmarin
Participant

Yes i saw them moved up, and no network connection, only multitrack recording with qu-drive.

2015/01/22 at 1:54 pm #44673

[XAP]Bob
Participant

Very odd. We have seen noise on unconnected ST3 when the QUDrive has been in use, I wonder if this is similar cause?

2015/01/22 at 3:23 pm #44675

Andreas
Moderator

Very interesting, had a similar experience recently. Hooked up the Qu32 at home via both dSnake and LAN switched (see other thread) through the ethernet cable into the stagebox which only has a stereo input (23&24) and LR output used to play music (testing setup). Everything running through a UPS.

Nobody was even close to the mixer and nothing connected through WLAN either but suddenly music was off and the linked fades 23&24 were set to bottom, and only these two. Observed this exactly once over weeks…

2015/01/22 at 3:43 pm #44677

[XAP]Bob
Participant

QU32, and it was 23&4…

That’s not the “right hand end” which was my suspicion wrt QUDrive interference…

2015/01/22 at 6:14 pm #44684

dmarin
Participant

I also noticed this behavior (movement of faders) when i connect the mixer via usb to pc.
I’m very confused and disappointed because is a SERIOUS bug especially for live use!

2015/01/22 at 7:07 pm #44686

[XAP]Bob
Participant

“When I connect”

Do you mean in the process of connecting, or when it has been connected?

I’ve not seen either…

2015/01/22 at 7:09 pm #44687

dmarin
Participant

I mean when it has been connected, not always but sometimes.

2015/05/25 at 5:05 pm #48262

airickess
Participant

While I do not like to dredge up older posts I do want to say that I have also experienced a similar issue with linked channels on my Qu 16. I was on a job in April and had channels 9 and 10 linked fully. While I was sitting there, not even touching the console, the two channel faders went from unity gain to -inf. The channels in question were not passing audio at the time and there were no scenes created. This is with firmware v1.7 installed.

2015/05/25 at 6:46 pm #48267

[XAP]Bob
Participant

Is this always linked faders ?

2015/05/25 at 9:13 pm #48268

Anonymous

Yes..
Happened to me ONCE only (QU32) just after I had connected to Mac “i think” as I have used both in studio.
I thought mmm don’t wanna write home about that?
too much work to do…
so cold boot and …. all has been sweet on that system
but I dont use that scenario QU32 every day
however I do Use a QU16 nearly every day as a side car midi driver and never missed a beat.

SO… i am wanting to know from… after owners have upgraded their firmware, do users ALWAYS do a cold boot?

I know their are other threads about quirks, however my experience is or has been to MANDATORY do a cold boot after firmware update!

2015/05/26 at 5:48 am #48273

airickess
Participant

dhak, what do you mean by a “cold boot”?
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