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Vintage threads from the first ten years

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Re: Vintage Wah Wiring question ???

2/24/2000 4:22 AM
John Fisher	Re: Vintage Wah Wiring question ??? Hi Larry, I have an old crybaby but it does not have a power jack but only uses a battery. I don't know the details of the specific pedal you are asking about but you have to watch out for different ground references. The newer pedals for example have the wiring so the positive is on the sleeve of the jack and the negative is in the center pin. The older devices could have the opposite configuration. The problem is when you by chance have 2 different pedals with different polarities sharing the same power source. What then happens is the reference to ground gets messed up and this is where you get a nasty hum. I am not saying that's what's happening in your case but it is something to look out for. Hope things work out for you. John Fisher

2/24/2000 4:22 AM

John Fisher

Re: Vintage Wah Wiring question ???

Hi Larry,
I have an old crybaby but it does not have a power jack but only uses a battery.
I don't know the details of the specific pedal you are asking about but you have to watch out for different ground references. The newer pedals for example have the wiring so the positive is on the sleeve of the jack and the negative is in the center pin. The older devices could have the opposite configuration. The problem is when you by chance have 2 different pedals with different polarities sharing the same power source. What then happens is the reference to ground gets messed up and this is where you get a nasty hum. I am not saying that's what's happening in your case but it is something to look out for.
Hope things work out for you.
John Fisher