gabeausiello

Ah. Got it. Yeah man. This is a weird one.

Thinking about this further, and we have had ground loop issues in the past there. They also just had a power outage (I was told not a surge) that was suspect in frying one of their computers. Everything else was fine so maybe just a coincidence. And for the record, none of my equipment was plugged in. I always pack it up after every practice. Definitely going to try this in a different space as well.

Totally get it. It's not specific to the in-ears. Just more obvious. When running from the xlr straight to the mixer, it also drops in the mains (directly in front of the speaker to confirm). It's absolutely bonkers. I still have more testing to do though. Thanks all for your responses.

I did try on the Helix when in-ears were directly connected. No change.

Sorry, I mean the volume of the powerstage. No tubes.

OK. Did more testing last night. I initially chalked it up to phase cancellation, but it's definitely not. -It's not the cables (used different ones) -It's not the PowerStage (I tried a Quilter we have) -Power sources were different -We can see the volume gradually dropping 15-20 db on the meter in the mixing board when I crank the amp all the way. I ran my in-ear module straight from the XLR out of the Helix, and the issue was definitely occurring. At this point, I have to say it's the Helix. I'm going to backup/factory reset after my next round of shows. We'll see if that fixes the issue, but I'm not hopeful. Still going to experiment with a couple of small things, such as the power cord I'm using from the Helix to my SKB PS-45 power supply (it's in a 120v socket, NOT the pedalboard onboard pedal power connections which obviously don't have juice to power a Helix). Definitely going to test the sockets with a multimeter though, just to rule that out too. Even with that, I still can't see how the issue would be caused by it. I also forgot to try the synth patch mentioned above. I will try that as well if the reset doesn't resolve it. Thanks again, everyone. I'll keep the thread updated.

Thank you for all those suggestions. I haven't tried changing the cable yet - in fact, there is a short "L angle" cable that I am running directly into the PS that I connect my longer cable to. I need to remove that as well. I will try another amp. I did use the ground lift on the Helix (not sure if the PS has one but I'll check). I was running the Helix out of the same power conditioner, and did try going straight to the outlet, BUT both devices were technically still on the same outlet. I'll try changing that as well. I will keep this thread updated with my findings. Thank you all for the information.

Exactly! There is no plausible explanation. I'm good with things like this, as well as two of the others in my band (one is a sound engineer) and we were all completely stumped as to how it's even possible. To answer your question, "yes", I did disconnect the speaker cable and all was fine when I turned it up. I will attempt your test idea and report back. Thank you for the suggestion! It's going to drive me nuts until I figure it out. Yes. I was going to mess with that more as well just for testing purposes. I believe I did set the volume knob to only control either the XLR or the 1/4" and had no change, but I was also flustered and frustrated when testing so I can't fully remember. lol! Thanks for your input.

Yes. For sure. I just don’t see how that has any effect on the signal volume from my XLR out when it’s on a completely separate path and output. It’s so strange.

Thanks. I need to check again, but if IIRC I did check that and it was not visibly lowering the output on the Helix meter. No compressor on the mixer channel. I did also unplug my speaker output from the Powerstage and test, and it did NOT lower the XLR volume as I turn up the PS volume. It only occurs when the Powerstage is pushing hard. Does the Helix have some sort of way to measure current draw through the 1/4" output? Even if it did, I still don't understand why it would lower the signal to the XLR out.

Hello everyone. Coming here for help. I have a Helix LT. I love it. Started having this really odd issue that leaves me completely baffled. My patches run dual paths so that I can run to front of house with Cab IR and also into my Seymour Duncan Powerstage 700 for my cab (non-IR). The Powerstage gets the left/mono 1/4" out, and the mixer gets the left/mono XLR out. Now, here's what started happening.... when I turn up the volume on my Powerstage, it is lowering the signal coming from the XLR out in the Helix. It is visible on the meter in the mixing board. I discovered the issue because I have guitar coming to me into my in-ears and when I was turning up my amp, it was being lowered gradually as I turn up my Powerstage. So, how is this even possible? How would the Helix even know or detect what the volume is on whatever poweramp the 1/4" out runs to? Initially thought it could have just been phase cancellation but again, you can visibly see the volume going down on the mixer meter(s). Hopefully I've described my issue well enough and with enough details. Few more details: -If phantom power was being sent, and I confirmed it is not (I've read Helix does weird things with phantom power) -I don't know when this issue started -I have not reset the Helix or anything yet -It occurs on all of my banks/patches Thank you in advance for your help.

Hi. Did you ever figure this out? I've run into the same issue with my Helix LT. I had issues on my Stomp XL also, but usually ended up just adding and removing blocks in certain orders and I was able to eventually get it how I wanted. It seems to happen often when you have multiple blocks controlled by one footswitch. I currently only have a splitter controlled by the switch, and have the led set to red, but the block label stays gray. So annoying. Hi. Did you ever figure this out? I've run into the same issue with my Helix LT. I had issues on my Stomp XL also, but usually ended up just adding and removing blocks in certain orders and I was able to eventually get it how I wanted. It seems to happen often when you have multiple blocks controlled by one footswitch. I currently only have a splitter controlled by the switch, and have the led set to red, but the block label stays gray. So annoying.