Buzz probs w/JP

[augustyn]

hi guys,
i have an unsolved noise problem with my guitarsetup. its NOT fault of the guitar but maybe someone can help to find a solution.
1) my setup:
MMJP6/pz
magnetic output - tuner (korg) - compressor - tremolo - wah - ISP decimator - amp
piezo output - aphex exciter - DI box - mixing console - PA
2) my problem:
as long as there is only connected the magnetic output everything is perfect. when i connect the piezo i have a massive buzznoise on the amp. (coming from the guitar).
what did i try already.
groundlift the exciter
use a different powersupply for exciter and the other pedals.
its a ground prob or something else.

any ideas?

thanks for your advice
auge

 

[jaxadam]

Duracell, or Energizer?

 

[PeteDuBaldo]

I would say that you need a DI box with a ground lift, but you've tried that.

Have you run all your electrical through a power conditioner?

 

[SteveB]

Flip the ground lift on the DI box. If your DI box doesn't have a ground lift switch, get one that does.

If that doesn't do it, try plugging your amp into different electrical outlets. My drummer's house has one outlet that I just can't use at all without unbearable buzzing. All the others work fine.

 

[augustyn]

thx guys for your many advices.
the aphex exciter has a ground lift but it doesnt change anything. the exciter works as a DI box itself.
i dont have powerconditioners.

 

[Jimmyb]

Is the exciter/DI run from the same supply as the PA?

It sounds like there might be a loop problem.

(but I'm usually wrong)

 

[augustyn]

Is the exciter/DI run from the same supply as the PA?

It sounds like there might be a loop problem.

(but I'm usually wrong)

the exciter is not from the same supply. and its from a different supply as my other pedals (what made it a bit better). i am sure its a groundloop problem. but how can i solve it. would a powerconditioner solve it at all?

 

[Mick]

the exciter is not from the same supply. and its from a different supply as my other pedals (what made it a bit better). i am sure its a groundloop problem. but how can i solve it. would a powerconditioner solve it at all?

Servas Augustin, vergiss die Powerconditioner Sache, ich wurde erst mal das Piezo Signal direkt über eine gute DI Box direkt ans Pult anschließen und schaun was passiert. Wenn der Brumm dann weg ist würde ich ein Gerät nach dem anderen wieder dazwischenhängen bis du da sProblemgeraet hast.

Mick


Mick´s Guitar Center
Germany

Sorry guys foro writing in german, but we keep the voodoo in the forums alive

 

[augustyn]

hi mick,
das problem ergibts sich sofort wenn ich piezo und amp gleichzeitig einstecke. auch ohne pedals dazwischen. ist aber auch nicht auf jeder bühne gleich. jetzt ist die frage wie ich das h8inbekommen kann weil jetzt steck ich den piezo output aus wenn ich ihn nicht verwende. aber eigentlich würd ich ja gerne ein Y kabel verwenden.
schwierig schwierig.........
nd wenn ich die ISP so hochdrehe das der buzz weg ist dann schneidet er schon alles ab....

 

[Big Poppa]

there goes the neighborhood

 

[pauldogx]

really...........

 

[Mick]

there goes the neighborhood

You´re lucky that my japanese is so weak

 

[augustyn]

You´re lucky that my japanese is so weak

und mei mühlviertlerisch is anu gaunz ok

 

[Jimmyb]

the exciter is not from the same supply. and its from a different supply as my other pedals (what made it a bit better). i am sure its a groundloop problem. but how can i solve it. would a powerconditioner solve it at all?

Well, failed German at school, so I'll have to use English!!

The ideal way to rid your self of the Earth loop is to run all of your kit from the same source (use extension leads and multi-plug boards). Don't forget to use a few circuit breakers just to be on the safe side.

 

[mesaspeedlab]

Yep, had the same problem with the same setup. My piezo was into a DI with the ground lifted (didnt matter) into the FOH, mag plugged into my pedalboard (powered Furman SPB-8) going into a Hot Cat 30...went thru everything and did find some noisy outlets on the stage, but most important, all plugs for your setup (amp, pedalboard, power supplies) need to be plugged into the same source. So now I have amp and pedalboard plugged into a Furman power strip. I also decided to not use the plugs onstage but run the Furman power strip into an extension cord to an outlet backstage. I still have a tiny bit of hum but I think thats just the building, still a 95% improvement and sounds awesome.... Good luck

 

[augustyn]

Yep, had the same problem with the same setup. My piezo was into a DI with the ground lifted (didnt matter) into the FOH, mag plugged into my pedalboard (powered Furman SPB-8) going into a Hot Cat 30...went thru everything and did find some noisy outlets on the stage, but most important, all plugs for your setup (amp, pedalboard, power supplies) need to be plugged into the same source. So now I have amp and pedalboard plugged into a Furman power strip. I also decided to not use the plugs onstage but run the Furman power strip into an extension cord to an outlet backstage. I still have a tiny bit of hum but I think thats just the building, still a 95% improvement and sounds awesome.... Good luck

thanks a lot i'll try that....