Transformer interferance

[jestaudio]

Hi folks, played a gig last night in a new pub with dimmable LED lighting, the interference wasn't so noticeable on the clean channel but as soon as I kicked the dirt in I had distinct buzz, made no difference w weather it was my twin hum bucker suhr or my 89 strat, anyone got any suggestions to supress it, the amp is a HK switchblade, I have also had a similar issue before on a Mesa DC5

[Reeltarded]

You have to be on a separate circuit. Breakout from their power and use a conditioner. It costs about hmm.. a grand.

[Reeltarded]

Just spent like half an hour searching for a picture or an article and couldn't find anything.

You mount a small service box with a couple outlets in a case or just on a heavy board. You have to mount a tail that is long enough to reach local service and you tie into their box right off the rails.

You might be able to find a used or surplus unit from someone who runs a remote arc welding business. The wire is the major expense. Surplus is your friend.

[jestaudio]

You have to be on a separate circuit. Breakout from their power and use a conditioner. It costs about hmm.. a grand.

I get this distinct feeling that the venue would be un-impressed if we started to play around with the electrics, a power conditioner sounds as if it may be a worthwhile investment, I may also check my cabling as everyone else was ok, then again its only me that uses a high gain amp

[Reeltarded]

If you aren't completely isolated from the circuit with the dimmers it does that.

Distributed power also really gets the chicks.

[ampgeek]

Not sure what the exact cause of the interference here is...but...a homegrown conditioner like this might be worthy of consideration. Feels like it could be cobbled together for a couple hundred dollars or less.

Good luck,
Dave O.

[JazzGuitarGimp]

A balanced AC power distribution box will likely get you there. They aren't cheap, but they are designed for this application. The heart of the system is a large toroid isolation transformer that has a precision-balanced centertap on the secondary. The center tap is tied to ground and the two outer legs of the secondary provide 60VAC each (out of phase to equal 120VAC total output). By feeding your amp with this "balanced power"' all common-mode noise on the AC line is cancelled out. Equi-Tech (the first company to make these) and Furman make these. The Furman product is less expensive. I used to own one, and they work as advertised.

Edit: this solution is not reccommended for two-prong amps with a death cap!

[jestaudio]

I am also not to sure if the cabling itself is picking up interference, turning the volume down killed the buzz totally, my rig as it stands is stereo lead from guitar to aby box, wah then direct into the H&K, I expect a bit of buzz on a strat but not with buckers as well

[Leo_Gnardo]

You mount a small service box with a couple outlets in a case or just on a heavy board. You have to mount a tail that is long enough to reach local service and you tie into their box right off the rails.

From Showpower's John Campion: "You gotta fight - for your right - to TIE. IN."

At the other end of the solution scale, since your hi gain amp is the only trouble spot, if you choose power conditioning it doesn't have to be any bigger than what's necessary to run your amp, plus a suitable safety margin.

Nice to know the buzz from lighting dimmers & neon displays still carries thru into the modern day of LED stage lighting. Phooey...

[Reeltarded]

It's waaay worse than before. Every light has a transformer and a ballast and a governmentally insane regulator underwriting it.

You know what dimmer is? People. People are. haha I made a dimmer funny.

[Jana]

There could be a movie about that, Dim and Dimmer.

[Reeltarded]

Gary indiana; where the wine flows like beer.

[Jana]

And they buy it in boxes.