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Author Topic: Help diagnose a mic issue  (Read 249 times)

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Offline dynamicalories

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Help diagnose a mic issue
« on: December 07, 2018, 08:52:08 AM »
I had a weird issue last night with my MBHO cards with an active setup into a Naiant PFA into a MixPre-6. Noise in the right channel starts at about 58 seconds. Any idea what this could be? I plugged the mics in this morning and all sounds fine. The board feed I got last night also sounds perfectly fine. I checked all the connections which seem to be fine. I had to contend with a tight area by the soundboard last night with a liquid light show going on. Did my bag get jostled and a connection came loose?

https://soundcloud.com/nyctaper/cave2018-12-06unionpool-mbho/s-S5W2r

Offline morst

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Re: Help diagnose a mic issue
« Reply #1 on: December 07, 2018, 03:08:24 PM »
Sounds like an intermittent bad cable on right channel. Check that all three pins of the XLR are connected to their opposite number and nothing else.


If the cable checks out OK then it's either the mic or the other gear.
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Offline Ben Turnbull

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Re: Help diagnose a mic issue
« Reply #2 on: December 08, 2018, 02:19:27 PM »
Is that RFI? Did it match anything in the light show? If you were near a strong AC source, could there be some "induction" interference? I'm not an EE so can't be more helpful.

To me, if it was a cable connection, and you were moving the bag and gear around to the same extent your interference presents in the sample, then I'd indeed be checking the hardware. If not, then I'd be trying to figure out what external sources are in play.

In my short experience, cable noise is generally spiky and quick, not persistent tones. I could be wrong.  :shrug:

Good Luck
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Offline dynamicalories

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Re: Help diagnose a mic issue
« Reply #3 on: December 09, 2018, 10:46:04 AM »
Thanks guys. I haven't been able to recreate the issue. everything seems like it's checking out now. I'm gonna chalk it up to being a bad connection somewhere and hope it doesn't happen again.

 

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