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In Reply to: Re: Hum from mics in my recording setup posted by rekordboy on July 1, 2006 at 10:38:13:
I'll go on record saying that cabling could be a problem. Twice I've come across cables with an audio-technica badge that had no business in a sound system whatsoever. No matter what I did, those cables allowed hum into the system. I changed the cables and no more hum.These particular cables were sold as mic cables, but their construction was not a standard shielded twisted pair. Rather, each single conductor had its own shield and the shields were tied together at each end with the conductors as positive and negative.
So, making sure you have decent, properly terminated cabling from microphone to preamp is certainly a good idea.
As an aside, a few weeks ago I had an assistant mic up a guitar cabinet with an SM57. When I opened the channel, there was an obvious hum. He couldn't figure out the problem so I went to the amp and it was dead quiet. The hum was being picked up via inductive coupling between the power tansformer in the amp and the coil in the microphone (EMI). I moved the mic to the other side of the cabinet and hum all fixed.
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Follow Ups
- Re: Hum from mics in my recording setup - Top Jimmy 16:35:53 07/02/06 (1)
- Re: Hum from mics in my recording setup - rekordboy 15:01:03 07/04/06 (0)
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