What exactly does the grounding switch on the back of my amp do? I honestly have no idea
Assuming you've got an old Fender amp, it changes the polarity of the plug. One way will result in a safely operating amp with less buzz; the other way may have more hum but more importantly also put 120V on the chassis. This is what we call a "bad thing." It needs to be taken to a tech and given a proper 3-prong cord (have the death cap removed while it's there). If it has one already or it's a newer reissue amp, the ground switch has been disconnected and doesn't do anything.
i have a 5150 212 if that makes any difference
Maybe a ground lift to prevent ground loops?
it breaks any ground loop in your signal chain it`s normally labelled "ground lift", the other option would be to use a external ground lift or a power conditioner.
Out of curiosity, in what application would one not use it? Why not use it all the time?
you would use it when you are getting lots of hum from the amp fom things like pc`s, flourescent tubes, old building wiring etc, really comes into it`s own if you are playing in churches that have been converted into live music venues,
Last edited by ibanezgod1973 at Jul 28, 2010,
When your amp isn't grounded through other means?Out of curiosity, in what application would one not use it? Why not use it all the time?
Removing the chassis ground may remove some hum but in doing so it also removes the ground protection, if the chassis goes live it stays live. It reduces safety, that's why it isn't permanent. If you don't need the ground lifted then don't do it.
Last edited by Cathbard at Jul 28, 2010,