help troubleshoot a buzzzzz on Beyer M160

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joninc
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help troubleshoot a buzzzzz on Beyer M160

Post by joninc » Tue Apr 16, 2019 1:45 pm

My beyer M160 was making a slight buzz - also when you touch the mic a ground hum happens - a much louder buzz.

I thought maybe it was the mic pre but I swapped it and it was still there so i tried a cloudlifter and it just amplified the noise.

I also swapped the xlr.

Nothing helped.

Tried I a different mic and it was fine.

Any idea what this means and how to fix? Some sort of grounding issue within the mic? @shinybox?
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Recycled_Brains
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Re: help troubleshoot a buzzzzz on Beyer M160

Post by Recycled_Brains » Tue Apr 16, 2019 2:57 pm

Sounds like a grounding issue to me. Did you pop the XLR connector out to make sure the wires are all attached? That'd be my first move.
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Re: help troubleshoot a buzzzzz on Beyer M160

Post by joninc » Tue Apr 16, 2019 3:17 pm

I'm not sure how to open up this mic without damaging something - it doesn't seem obvious like a 57 - no screws that I can see...
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Re: help troubleshoot a buzzzzz on Beyer M160

Post by joninc » Tue Apr 16, 2019 3:19 pm

actually under some brighter light there is a VERY TINY screw near the base - I'd need a special tool to open this up tho...
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Re: help troubleshoot a buzzzzz on Beyer M160

Post by ShinyBox » Wed Apr 17, 2019 10:23 am

Happy to look at it if needed.

If you decide to open, do be careful as the wires on the Beyer output transformer are very tiny, so should be considered somewhat fragile.

The hum could be no ground connection to the body, if the other noise( if there is an other noise) is related to the signal you are recording, it is likely the ribbons.

Regards

Jon

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Re: help troubleshoot a buzzzzz on Beyer M160

Post by Scodiddly » Thu Apr 18, 2019 5:15 pm

I've got a Beyer ribbon that buzzes under certain circumstances, usually a laptop interface with no solid ground. Totally fine into a regular mixer.

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