need help

[gush]

We set up in a small bar last night and I had an obnoxious buzz coming through my amp. I couldn't get it under control and it was very annoying.

I could stand at a certain angle to my amp and control it better but it was a real hassle doing that and rolling vol pot up and down.

I was totally stumped. Tried different cables different AC outlets shutting off lights going direct to amp. Different guitar. Oh and it was only with guitar volume up. With volume 3/4 or lower my gate would keep it at bay.

There was something in that building causing the buzz. Any suggestion at all from the experts?

 

[AP515]

If the volume pot would clean it up I don't think it was line noise. I think it was EMI coming from somewhere. You tried the lights, which is often the source. I've had it from a nearby computer before. Hate it when that hapens...

 

[shboom]

We get that periodically, depending on the venue. We call it "dirty power". More often than not, what we've found is, either fluorescent lighting and/or dimmer controls on lights, the dimmer controls being the worst of the problem. I'm assuming your using your PRS, so single coil's not an issue. I get it at a particular venue and I'm playing my Tele with single coil.

 

[gush]

Ah. I knew about dimmers but forgot to check that.