very soft 'hum'-noise coming from bridge PU (CrunchLab7)? - Jemsite
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post #1 of 2 (permalink) Old 01-12-2014, 01:45 PM Thread Starter
Join Date: Oct 2005
Location: Amsterdam, the Netherlands
Posts: 239
Question very soft 'hum'-noise coming from bridge PU (CrunchLab7)?


I just finished installing the Liquifire7/CrunchLab7 combo into my Sterling JP70 7-string with a push-pull pot to enable splitting of the PUs.

I noticed when I switch on the bridge HB/CrunchLab (in humbucker mode, ie not split) there is a very soft humming noise coming from the amp which is not there when I switch to the neck humbucker.
The hum is only noticeable when the amp is set to a distortion sound, on a clean sound I can't really hear it.
Would this indicate that I did not ground the PU ok?
The hum is not very loud, but what baffles me is the fact that it's there when I activate the bridge humbucker but there is no hum at all when I switch to the neck humbucker.
Or is this slight amount of hum normal on the CrunchLab7?

Any ideas?

Santuzzo is offline  
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post #2 of 2 (permalink) Old 02-02-2014, 02:38 AM
Join Date: Dec 2012
Location: CONUS
Posts: 84
Re: very soft 'hum'-noise coming from bridge PU (CrunchLab7)?

I have the six string version, and have never heard a hum from either. Sounds like a bad ground. I'd try resoldering it to your pot.
Archlute is offline  

crunch lab , hum , noise

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