Ground Lift introduces buzz

rx3000 · 19th February 2007

What would if suggest to you if i get a buzzing sound when using the ground lift switch on my DI box?

emrr · 19th February 2007

flip it the other way? not enough info....

vince @ speck · 19th February 2007

Quote:

Originally Posted by rx3000

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.

dementedchord · 19th February 2007

Quote:

Originally Posted by rx3000

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????

rx3000 · 19th February 2007

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.

kingneeraj · 20th February 2007

thumbsup

structuredloud · 20th February 2007

Best title i've read in a while!

Tibbon · 21st February 2007

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.

amorris · 21st February 2007

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.

19th February 2007	#1
rx3000 Gear nut Joined: Nov 2005 Posts: 77 Thread Starter	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?

21st February 2007	#8
Tibbon Lives for gear Joined: Jul 2004 Location: Boston/MA Posts: 4,780 2 Reviews written	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. __________________ David Fisher (aka tibbon) What is Noise, Blog (DIY, gear, tech, etc) Follow me on Twitter imVOX- Voice for Gamers WTB: Moog Theremin Signature Edition

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19th February 2007	#2
emrr Lives for gear Joined: Dec 2006 Location: nc Posts: 1,001	flip it the other way? not enough info....

20th February 2007	#6
kingneeraj Lives for gear Joined: May 2006 Location: Tokyo, Japan but currently in LA Posts: 564	thumbsup

20th February 2007	#7
structuredloud Lives for gear Joined: Feb 2006 Location: Oakland, CA Posts: 659	Best title i've read in a while!

21st February 2007	#9
amorris Gear maniac Joined: Oct 2004 Location: winter park Posts: 279	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.