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Author Topic: EMF stage hum?  (Read 4073 times)

Mike Sokol

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Re: EMF stage hum?
« Reply #10 on: February 18, 2015, 07:35:32 pm »

I'm not completely sold on the massive magnetic field concept.  This is going to be a single loop coil, not something I think I could intentionally use to make a massive magnetic field.

I don't think the EMF hum effect extends to the middle of the loop. But perhaps it extends a few feet from wiring under the stage. If that's the case, then that would explain a number of hum situations I've been in lately. But certainly more to study.
« Last Edit: February 18, 2015, 07:49:45 pm by Mike Sokol »
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Mac Kerr

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Re: EMF stage hum?
« Reply #11 on: February 18, 2015, 07:43:58 pm »

I don't think the EMF hum effect doesn't extend to the middle of the loop. But perhaps it extends a few feet from wiring under the stage. If that's the case, then that would explain a number of hum situations I've been in lately. But certainly more to study.

In his AES presentations Bill Whitlock tells a story about finding a hum field in a rehearsal studio that was caused by the plumbing in the basement. There were stray currents in the water pipes between 2 buildings that had separate electrical service IIRC.

Mac
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Re: EMF stage hum?
« Reply #11 on: February 18, 2015, 07:43:58 pm »


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