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Post subject: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Mon Oct 25, 2010 2:54 am
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Good morning,

I recently bought a second hand P/J bass (Precision Bass Special),
and the person I bought it from tried to rewire the bass (butt didn't succeed),
so the wiring is al wrong,

I would like to rewire the bass like a Duff McKagan P-bass signature bass,
could you be so kind to send me the wiring diagram for this bass please?
If also possible a list of parts i'm going to need.
Hope you guys can help me with this, my guitar tech says he doesn't have a diagram for it.



Kind Regards,
Arne
(excuse me for the bad English, I'm from Belgium and nobody seems to be able to help me)


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Mon Oct 25, 2010 7:25 am
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Arne Van der Wildt wrote:
Good morning,

I recently bought a second hand P/J bass (Precision Bass Special),
and the person I bought it from tried to rewire the bass (butt didn't succeed),
so the wiring is al wrong,

I would like to rewire the bass like a Duff McKagan P-bass signature bass,
could you be so kind to send me the wiring diagram for this bass please?
If also possible a list of parts i'm going to need.
Hope you guys can help me with this, my guitar tech says he doesn't have a diagram for it.



Kind Regards,
Arne
(excuse me for the bad English, I'm from Belgium and nobody seems to be able to help me)


Welcome Arne,

The wiring is not unique by any means. It is wired like a Gibson Flying V but with a TBX pot instead of a regular tone pot. Both the Flying V and TBX diagrams are easily available on the web.

You'll need three 250K short shaft audio pots, a Gibson SG type toggle switch and a Fender TBX pot (which usually comes with the required 82K resistor and .022uf capacitor) and of course, an output jack.

If your tech is not familiar with either of the above, I recommend (without sarcasm) that you find a new tech!

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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Mon Oct 25, 2010 7:36 am
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Martian wrote:
Arne Van der Wildt wrote:
Good morning,

I recently bought a second hand P/J bass (Precision Bass Special),
and the person I bought it from tried to rewire the bass (butt didn't succeed),
so the wiring is al wrong,

I would like to rewire the bass like a Duff McKagan P-bass signature bass,
could you be so kind to send me the wiring diagram for this bass please?
If also possible a list of parts i'm going to need.
Hope you guys can help me with this, my guitar tech says he doesn't have a diagram for it.



Kind Regards,
Arne
(excuse me for the bad English, I'm from Belgium and nobody seems to be able to help me)


Welcome Arne,

The wiring is not unique by any means. It is wired like a Gibson Flying V but with a TBX pot instead of a regular tone pot. Both the Flying V and TBX diagrams are easily available on the web.

You'll need three 250K short shaft audio pots, a Gibson SG type toggle switch and a Fender TBX pot (which usually comes with the required 82K resistor and .022uf capacitor) and of course, an output jack.

If your tech is not familiar with either of the above, I recommend (without sarcasm) that you find a new tech!


thx for the advice ;-)

but I think you mean two 250k pots and 1 TBX pot and a 3 way toggle switch (1 tbx for overall tone and 1 250k pot for each pickup volume)

I also send an e-mail to Fender to ask the diagram, and received it very fast :) :shock:

For the new tech, I found my ex-guitarplayer who can fix it for me,
he already build several pedals and is now building his 2nd guitar :p

Grtz and many thanks
Arne


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Mon Oct 25, 2010 7:47 am
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Arne Van der Wildt wrote:
Martian wrote:
Arne Van der Wildt wrote:
Good morning,

I recently bought a second hand P/J bass (Precision Bass Special),
and the person I bought it from tried to rewire the bass (butt didn't succeed),
so the wiring is al wrong,

I would like to rewire the bass like a Duff McKagan P-bass signature bass,
could you be so kind to send me the wiring diagram for this bass please?
If also possible a list of parts i'm going to need.
Hope you guys can help me with this, my guitar tech says he doesn't have a diagram for it.



Kind Regards,
Arne
(excuse me for the bad English, I'm from Belgium and nobody seems to be able to help me)


Welcome Arne,

The wiring is not unique by any means. It is wired like a Gibson Flying V but with a TBX pot instead of a regular tone pot. Both the Flying V and TBX diagrams are easily available on the web.

You'll need three 250K short shaft audio pots, a Gibson SG type toggle switch and a Fender TBX pot (which usually comes with the required 82K resistor and .022uf capacitor) and of course, an output jack.

If your tech is not familiar with either of the above, I recommend (without sarcasm) that you find a new tech!


thx for the advice ;-)

but I think you mean two 250k pots and 1 TBX pot and a 3 way toggle switch (1 tbx for overall tone and 1 250k pot for each pickup volume)

I also send an e-mail to Fender to ask the diagram, and received it very fast :) :shock:

For the new tech, I found my ex-guitarplayer who can fix it for me,
he already build several pedals and is now building his 2nd guitar :p

Grtz and many thanks
Arne


You are correct. I was distracted and meant to say a third 250K pot could be used instead of the TBX pot. The Gibson SG type toggle and three way toggle switches are one and the same. I called it the, "SG type" for a more, easily identifiable reference.

Your ex-guitar player apparently knows what he is doing and I would be most confident that he can wire up your bass with no problems.

Good luck!

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Post subject:
Posted: Tue Oct 26, 2010 10:05 pm
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FWIW, my 85 Fender Jazz Bass Special (the basis for the Duff bass) came stock with 500k volume pots and the Fender TBX tone.


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 7:31 am
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Joined: Mon Mar 26, 2012 12:40 pm
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Hi!
Got a white '87 JB special - PB on neck side/JB on Bridge - Have bought SD STJ-2B and would like to fix it the right way... I'm looking for the wiring Diagram for the Duff McKagan signature one. Can't find it in the list the Fender website is proposing and they do not answer my several emails...
Can anybody help me with a copy of this diagram (2 vol, 1 TBX, 1 toggle, 1PB pickup & 1 JB pickup) ?
Thanks in advance,

Frank


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 11:48 am
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FrankXC wrote:
Hi!
Got a white '87 JB special - PB on neck side/JB on Bridge - Have bought SD STJ-2B and would like to fix it the right way... I'm looking for the wiring Diagram for the Duff McKagan signature one. Can't find it in the list the Fender website is proposing and they do not answer my several emails...
Can anybody help me with a copy of this diagram (2 vol, 1 TBX, 1 toggle, 1PB pickup & 1 JB pickup) ?
Thanks in advance,

Frank


Welcome Frank.

Go here:

http://www.talkbass.com/forum/f8/duff-m ... ndex4.html

and scroll down approximately two thirds of the page.

Good luck!

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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 1:17 pm
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Thanks a lot Martian!
But I've bought SD-STK-J2B... They have more wires than the pickups pictured on the Duff McKagan sign forum... So I was wandering if somebody had a more detailed scheme...
Thanks anyway,
F.


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 2:32 pm
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Hi! Me again :lol:
I need to change the neck pick-up of my JB special '86..
Anybody has a suggestion?
Should a SD SPB-2 do the job with my SD STK-J2N?
Cheers,
F.


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 4:20 pm
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FrankXC wrote:
Thanks a lot Martian!
But I've bought SD-STK-J2B... They have more wires than the pickups pictured on the Duff McKagan sign forum... So I was wandering if somebody had a more detailed scheme...
Thanks anyway,
F.


With the J2B, solder the red and white wires together and insulate them (tape them off). The green and the black wires are your ground and hot wires, respectively. If you find the J and the P pickups out of phase with each other, simply reverse the green and black wires of the J2B.

You're welcome.

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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 10:42 pm
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Martian, in a passive P/J would you consider using 500k pots instead of 250k?


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sat Mar 31, 2012 10:50 pm
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Hmmm would this be it?

Image


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Sun Apr 01, 2012 7:06 am
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brotherdave wrote:
Martian, in a passive P/J would you consider using 500k pots instead of 250k?


I'm premising you're not talking about high output pickup but rather 'standard' output ones. Keep in mind that typically, a 'standard' output P pickup is loosely speaking, double the DC resistance of a 'standard' J pickup.

A few explanations with all the same answer: With a P/J, I prefer 250K since by design and player's overwhelming choice, both pickups tend to be on (albeit it to varying degrees) at the same time. As you know, with both pickups on, they are in a parallel wiring scheme with each other. Therefore, the DC resistance of both pickups in the circuit is quartered. Granted, this would be a sliding scale but it must be considered. As you know too, the 'balls' of any pickup is in its midrange. Consequently, a 500K pot or pots would tend to make the overall circuit void of any midrange where the highs would be anemic and the lows would be there but not to any degree of authority. On the other hand, say one only used one of the pickups. In the case of the J, the DC resistance isn't powerful enough to merit a 500K pot for the aforementioned reasons and therefore, the same situation would exist.

As can now be seen, the P bass pickup was designed around a 250K pot to deliberately hump up its midrange. With the P, although this could 'withstand' a 500K due to its DC resistance being high enough, all the 'punch' would be gone as the 500K dispersed the midrange in favor of highs and lows. It would sound like someone put a guitar pickup in its place. Meaning, granted, it will have a much wider frequency response but that authoritative 'bloom' a P bass pickup is known for would cease to exist.

Now if either or both of the pickups is of some ridiculously high DC resistance to where they inherently sound like an EB-0 or something, it is at this point that I'd definitely consider 500K(s) or even higher to stop all the farting and midrange puke in a deliberate effort to coax some kind of dynamic range out if it/them. Even here, EB-0s have 500K pots to begin with. So, if either in this case were HB, I'd consider rewiring the coil configuration in parallel and/or a higher pot resistance for some kind of coherent dynamics.

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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Wed Apr 04, 2012 1:19 am
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Yep I was talking about your basic stock passive P/J. Lots of the them, especially the Asian ones I've seen, come with 500k pots. When I put 250k pots in them they sound kinda dark.


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Post subject: Re: Unfindable wiring Diagram (Duff Mckagan Signature)
Posted: Wed Apr 04, 2012 5:00 pm
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brotherdave wrote:
Yep I was talking about your basic stock passive P/J. Lots of the them, especially the Asian ones I've seen, come with 500k pots. When I put 250k pots in them they sound kinda dark.


That's in part, because of the ceramic magnets and the inferior coils. The 500K is literally forcing some kind of life out of them.

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