swiveltung
Member
Flourescent lights, light dimmers, heaters and fans on the same circuit will cause hum.
Of course many old buildings have issues. Wall outlets wired wrong. 3 prong outlets that really only have 2 wires inside!
I tried a Hum Debugger in a gig that had big issues. It did nothing. Zip, Zilch.
One thing that helps is to put a metal /copper plate/shield under the body where the pots are. Ground that plate to the bridge or tailpiece. I did this on a semihollow recently and it helped a ton, even though the bridge was already grounded, the plate seemed to work as a shield.
The other option is to get an isolated power supply, like a Furman. Beware that these only really do the job once you get to about $350 or so. (last I investigated) That's a lot for a fancy "extension cord"
I've wondered is using a Variac would do it? They sell Chinese ones for <$50
Of course many old buildings have issues. Wall outlets wired wrong. 3 prong outlets that really only have 2 wires inside!
I tried a Hum Debugger in a gig that had big issues. It did nothing. Zip, Zilch.
One thing that helps is to put a metal /copper plate/shield under the body where the pots are. Ground that plate to the bridge or tailpiece. I did this on a semihollow recently and it helped a ton, even though the bridge was already grounded, the plate seemed to work as a shield.
The other option is to get an isolated power supply, like a Furman. Beware that these only really do the job once you get to about $350 or so. (last I investigated) That's a lot for a fancy "extension cord"
I've wondered is using a Variac would do it? They sell Chinese ones for <$50
Last edited: