Bass Wiring Help needed!!

Pickups, wiring schemes, switch techniques and onboard active electronics for guitars and basses
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TechRockGroove
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Post by TechRockGroove »

Hello, I'm a newbie here.

I tried to rewire my bass to make it passive only using its Humbucker Pup with a B25k volume pot.

The humbacker has 4 colored wires (white, black, red, blue) and shield.

Here is what I did.
Red&Blue taped together, black and shield wires soldered to the Ground, white to #1 terminal of the Vol. pot
(I don't need the blend and coil split function).
Then from #2 terminal, the output wire is soldered to the Tip of the jack.
Also, 2 ground wires from the jack and bridge soldered together.

It doesn't work ....

could anyone teach me how to rewire

here is the schematic of my bass.
http://www.cortguitars.com/downloads/pdfs/GB75.pdf

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roseblood11
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Post by roseblood11 »

First, find out which colors belong to which coil (and what is begiining or end...)

Then, use a 500k pot, a 25k will never work in a passive circuit.

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TechRockGroove
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Post by TechRockGroove »

roseblood11 wrote:First, find out which colors belong to which coil (and what is begiining or end...)

Then, use a 500k pot, a 25k will never work in a passive circuit.

Hello, roseblood11
thanks for the tip.
I figured out the Red&Blue wires are the output wires.
right now, there are 2 B100k and 1 B25k pots at home.
Can I go with a B100k instead of a 500k?

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lolbou
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Post by lolbou »

TechRockGroove wrote:Can I go with a B100k instead of a 500k?
Say goodbye to your higher frequencies... Try 250k, that should be fine for a passive bass. 500k would bring up even more highs...
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.

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TechRockGroove
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Post by TechRockGroove »

lolbou wrote:Say goodbye to your higher frequencies... Try 250k, that should be fine for a passive bass. 500k would bring up even more highs...
I see. I will buy a 500k then.

Thanks lolbou :D

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lolbou
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Post by lolbou »

Oh, may I add : take a log pot, ie. A250k (or A500k if you really want it), not a B one. :wink:
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.

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CHEEZOR
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Post by CHEEZOR »

You should be able to use the 25k pot to wire everything up till you get the 500k. Just to make sure you have all the wiring right. Then when you get the 500k, you can just swap it for the 25k one, but at least you will have everything ironed out wiring-wise..

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dolganoff
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Post by dolganoff »

TechRockGroove wrote:Hello, I'm a newbie here.

I tried to rewire my bass to make it passive only using its Humbucker Pup with a B25k volume pot.

The humbacker has 4 colored wires (white, black, red, blue) and shield.

Here is what I did.
Red&Blue taped together, black and shield wires soldered to the Ground, white to #1 terminal of the Vol. pot
(I don't need the blend and coil split function).
Then from #2 terminal, the output wire is soldered to the Tip of the jack.
Also, 2 ground wires from the jack and bridge soldered together.

It doesn't work ....

could anyone teach me how to rewire

here is the schematic of my bass.
http://www.cortguitars.com/downloads/pdfs/GB75.pdf
You didn't say where goes the 3rd terminal of the volume pot? Drawing the schematics of your wiring and posting it here can help enormously in debugging :wink:

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bluescage
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Post by bluescage »

Hi TechRockGroove,

I think it must look something like this:
wiring.JPG
Hope this helps

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