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CAMLOCKS and Ground Loops
Posted: Sunday, June 26, 2011 03:43 PST | 2 Comments (see below)

Got an annoying buzzing sound in your sound system? Remember to always bring along those little gray A.C. ground lift adapters on events, to help "kill the buzz" from ground loops, or have an EBTECH Hum Eliminator on hand, which is supposed to be able to kill hum without defeating safety. However, in all cases, these techniques and devices should only be used if you run out of time. For example, at the event we just did last night in the CSUF Pavillion room, we had everything running off a 200-amp service using our own CAMLOCK distribution, EXCEPT the six self-powered Mackie SRM450s out in the audience area. As soon as the speakers were plugged into our console's AUX output, the buzz started. We eliminated the ground at each speaker, but could have also used an EBTECH at the AUX input. Best solution is to run power from our power distribution to the remote speakers. If you run out of time, you can EQ most of the noise out, but then you lose quality of sound.


2 Comments to "CAMLOCKS and Ground Loops"

Audio Visual Hire Gold Coast Says:

11/12/2013 9:23:00 PM

Keep it up sharing this article. Learning idea you've made. Thanks a lot.
Paul Scott Says:

6/26/2011 3:51:00 PM

I guess better to have the buzz than no sound at all! Great article!

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