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Ground Lift introduces buzz

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Old 19th February 2007   #1
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Ground Lift introduces buzz

What would if suggest to you if i get a buzzing sound when using the ground lift switch on my DI box?
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Old 19th February 2007   #2
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flip it the other way? not enough info....
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Old 19th February 2007   #3
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Quote:
Originally Posted by rx3000 View Post
What would if suggest to you if i get a buzzing sound when using the ground lift switch on my DI box?
No rule book for ground lift switches. Whichever position stops the buzz/hum is the correct position.
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Old 19th February 2007   #4
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What would if suggest to you if i get a buzzing sound when using the ground lift switch on my DI box?
??? dont use the lift????
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Old 19th February 2007   #5
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ha , funny!
my assumption was the ground lift switch would help with some of the build up of hum that i'm experiencing, but yes it does sound better without it on.
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Old 20th February 2007   #6
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Old 20th February 2007   #7
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Best title i've read in a while!
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Old 21st February 2007   #8
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Is something that the DI is connected to on another power circuit? If so, it could just be a potential difference between circuit A and circuit B causing the buzz, not a ground loop.
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Old 21st February 2007   #9
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answer: it is working perfectly.

a buzzing sound is usually indicative of no ground refernece. a humming sound is indicative of multiple ground references. so, if you are having a hum, and you ground lift at this point and you get buzz, this is probably not the point of the problem. dont lift the ground at this point, go somewhere else to find the multiple grounds causing the hum. remember, this could be the gtr itself, or anywhere between the gtr and the speakers you hear the hum/buzz in.
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