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Guitar wiring.. Is this dangerous???
OK, Getting my new GR55 has revealed an issue in the wiring of my guitar that I should rectify.
Bit of background:
1)
The Gr55 has a straight output direct from the normal pickup, ON the GR30 it was simple, but with the 55, you can choose what comes out of that socket, either normal pickup, modeled tone, or both.
I have pretty much decided that I would prefer the modeled tone to come out the synth Outputs, and the normal guitar signal, from this direct out.
So, with my regular guitar volume I can at all times get a totally straight sound, in the case of emergencies.
But, this socket hums, quite a bit, definately more than with using the GR30, BUT... in recent months, Ive been trying to clean up my signal a bit (Ive always been prone to hiss, hum and distortion) and was blaming the GR30 for this. And my attempts at fixing it a few times (changed some switches that went basically, wondering if I removed some shielding by accident).
2)
I also have a Fernandez pickup installed: this requires 9v juice, that I was sick of replacing batteries and (money environment etc) so I have a cable running up from my pedalboard that carries 9v, and goes into a extra jack socket.
And finally.. TO THE POINT:
When I touch BOTH my strings (should be grounded for hum threw the guitar cable (Are they threw the hex cable, cos I DONT have another regular cable plugged in) AND the metal on the plug from this power supply, two things happen.
1) Hum and hiss disappear, and suddenly my guitar sounds sweet
2) I am electrocuted!!!!! (not alot, just that horrible tingly feeling) The electricity feeling is on te finger touching the power supply not the strings...
So my question:
Can I connect GROUND inside the guitar (strings etc) to the power supply neg? Remember this IS going into the mains, via a wall wart of course... Is this a safety issue? Or is it a safety issue as it is?
The GR55 has a grounding point on it, should I connect that.. to er.. what? The earth on a mains plug?
These things tend to introduce hum, in my experience...
MArk
--
Mark Francombe
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