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Author Topic: Power from multiple sources  (Read 10196 times)

Mike Sokol

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Re: Power from multiple sources
« Reply #20 on: May 20, 2012, 06:38:15 pm »

+1.   You're asking for trouble any other way.  Too many unknowns.
+2  Plus remember that powering sound gear from multiple non-inverter generators and utility power can result in some really strange sounding ground loop hum. The hum will be modulated by the difference in RPM between different power sources. For instance, if one generator was running at 59.9 Hz and the other was running at exactly 60 Hz, there would be a phase shift cancellation in the ground loop currents every 10 seconds. Not exactly what you want to hear. I always carry a few Hum Eliminators and ISO-2 boxes in my road kit for these ground loop situations.
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Mike Sokol
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www.NoShockZone.org

Timothy J. Trace

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Re: Power from multiple sources
« Reply #21 on: May 20, 2012, 07:13:21 pm »

Is that Front of house, are you running an SAC rig on your computer?

I'm running the Allen & Heath iLive Editor, which controls an iDR-32 behind the SR speaker stack.  I keep a second Editor notebook on top of the iDR rack.
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Re: Power from multiple sources
« Reply #21 on: May 20, 2012, 07:13:21 pm »


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