Lots of annoying glitches last night at a gig.
We've switched to all in ear monitors, so we're probably more sensitive to odd level shifts.
What we found is that instrument levels on a few channels seem to dramatically change up and down,
for example, the drummer's monitor feed suddenly had no guitar levels at all.
At first I was thinking our soundman was mucking with trim levels with the remote iPad,
but he insists he wouldn't do that, knowing how disruptive it would be especially with in ear monitors.
IE with floor monitors and no earbuds blocking stage sound a change of say 6 db of guitar level in a single monitor feed would only take out a fraction of the overall guitar stage level, and would not be very dramatic, since the guitar amps themselves provide a lot of the stage level.
But with in ears, you would hear it.
At previous gigs we didn't have a sound man tweaking the mains levels out front with an iPad, so perhaps these level changes are going off when some other setting is being adjusted. It's as if the "database" of level settings is glitching when say a main fader level is being tweaked.
The other thing that happened was at some point the input trim for one of the vocalists got cranked way up high. I could hear his voice clipping in my monitor. I have the M20d beside me so I took a look at the tweak page while playing and saw his input level clipping badly. I also noticed autotrim was engaged, but it wasn't doing a thing.
So, perhaps autotrim is the culprit? Since it wasn't working properly in an obviously overloaded channel, perhaps it is glitchy and causing these random level changes?
I think we'll set our trim levels and disable autotrim to see if things improve.
The final issue is we really need 5 monitor sends now that we're going all in ear monitors.
I'm going to resurrect my older presonus 16 channel rack system we used to use for our full mixer as a monitor mixer for myself,
and free up one of the M20d channels for someone else to use. We've tried sharing channels with two performers on the same mix, but it's always an unhappy compromise. It would be interesting if: Line6 added one or two more monitor feeds over the L6 Link cable, and provided an L6 Link compatible DAC output for our wireless units...
I thought there was an earlier post with similar issues, but I can't find it here..