squirrel211 Posted August 29, 2016 Share Posted August 29, 2016 I have used my M13 at shows now for about 3-4 years (I can't really remember which year I got it!), without issue. Then on Saturday, with the exact same setup as I have used in the previous 200 shows, I was wickedly shocked by my vocal mic!!! I trouble shot the rig, and it turns out, my M13 is the problem. I am still using the power supply that came in the box with the pedal. Please help. I have shows coming up in a couple of days, and can't afford to spend weeks messing around returning purchases, taking the pedal to dealers, etc... Any ideas? Please HELP. Quote Link to comment Share on other sites More sharing options...
phil_m Posted August 29, 2016 Share Posted August 29, 2016 I have used my M13 at shows now for about 3-4 years (I can't really remember which year I got it!), without issue. Then on Saturday, with the exact same setup as I have used in the previous 200 shows, I was wickedly shocked by my vocal mic!!! I trouble shot the rig, and it turns out, my M13 is the problem. I am still using the power supply that came in the box with the pedal. Please help. I have shows coming up in a couple of days, and can't afford to spend weeks messing around returning purchases, taking the pedal to dealers, etc... Any ideas? Please HELP. How exactly did you come to the conclusion that the M13 was the problem? Usually these sorts of issues are related to guitar amps or PA systems not having the proper grounding. Quote Link to comment Share on other sites More sharing options...
squirrel211 Posted August 29, 2016 Author Share Posted August 29, 2016 How exactly did you come to the conclusion that the M13 was the problem? Usually these sorts of issues are related to guitar amps or PA systems not having the proper grounding. When I unplugged it from my rig, I didn't get shocked any more. I tested everything, pedals, tried a different amp, mic cords, patch cords, 1/4" cables, changed outlets. It was definitely the M13. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 29, 2016 Share Posted August 29, 2016 Ground loops don't occur with isolated devices, they occur when multiple devices are connected in a way where two ground points create a voltage potential. phil_m is correct. There is also the venue's electrical set-up to consider. When it comes to a ground loop, it could be anything in the signal chain. Something is different in the way thing were connected that time compared to prior times. Quote Link to comment Share on other sites More sharing options...
squirrel211 Posted August 29, 2016 Author Share Posted August 29, 2016 Ground loops don't occur with isolated devices, they occur when multiple devices are connected in a way where two ground points create a voltage potential. phil_m is correct. There is also the venue's electrical set-up to consider. When it comes to a ground loop, it could be anything in the signal chain. Something is different in the way thing were connected that time compared to prior times. That's just it, I have played this venue about 40 times, with the exact same set up. When I unplugged the M13, I didn't get shocked anymore. My rig is: Guitar Budda Wah Fulltone Plimsoul Menatone Red Snapper Amp (Tone King Royalist) The amp goes into a Tone King Ironman Mini Pedal M13 goes into the amp's effects loop All gear is plugged into my powerstrip. Removing any of the other gear from the circuit/signal path didn't fix the problem. Since the problem was fixed with the M13 being removed, I am assuming the M13 is the problem. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 29, 2016 Share Posted August 29, 2016 What is the make an model of the mic? And what is it plugged into? Quote Link to comment Share on other sites More sharing options...
squirrel211 Posted August 29, 2016 Author Share Posted August 29, 2016 What is the make an model of the mic? And what is it plugged into? The mic is a Shure SM86, plugged into a Behringer XR-16 Air. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 29, 2016 Share Posted August 29, 2016 And the Behringer XR-16 Air is plugged into the same power strip? Quote Link to comment Share on other sites More sharing options...
squirrel211 Posted August 30, 2016 Author Share Posted August 30, 2016 And the Behringer XR-16 Air is plugged into the same power strip? Not the same power strip, but same circuit. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 30, 2016 Share Posted August 30, 2016 Anything about the set-up that's changed prior to this time? Quote Link to comment Share on other sites More sharing options...
squirrel211 Posted August 30, 2016 Author Share Posted August 30, 2016 Anything about the set-up that's changed prior to this time? Nothing changed. Quote Link to comment Share on other sites More sharing options...
psarkissian Posted August 30, 2016 Share Posted August 30, 2016 Get in touch with Line 6 Customer Support. Quote Link to comment Share on other sites More sharing options...
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