How Can I Eliminate Humming Sound?

[marklwood]

Originally Posted by GwenButler

Just wondering if the establishment’s power source could have been the problem as the performance took place in a newly added building addition that had numerous Keno machines, flat screen TVs mounted on the walls and a juke box.

Any and all advice greatly appreciated.

Gwen

I can almost guarantee it.
There is a problem with the ground. The ground, just like water, takes the path of least resistance. If your amp is closer, it will act as the ground. The older amp just may be a little more tolerant of the problem. Geat a ground loop isolator. They are cheap enough at Radio Shack to be a no-brainer.