J in series with separate volume knobs. Schematic.

Ach · Feb 25, 2009

I think it is possible to run J pickups in series and have separate volume knobs. Here's a schematic.

What do you think?

l0calh05t · Feb 25, 2009

It should work but the tone will vary quite a bit depending on the settings of the volume knobs. That tone control looks a bit odd though.

edit: more precisely, the tone will probably vary more than the volume.

l0calh05t · Feb 25, 2009

Try this instead (also more compatible with switching):

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Ach · Feb 25, 2009

I don't see much differences in your schematic, the pots will act in similar way in both designs (yours and mine). The way i wired the tone is just an example (actually i don't see the reason why it would act in a different way if wired as you say). Any way thanks for comments!

l0calh05t · Feb 25, 2009

yours merely provide a variable load to the pickups, which will mainly affect tone (but volume will change as well), in my schematic the volume pots are wired as voltage dividers as they should be.

RyreInc · Mar 3, 2009

This strongly resembles a thread I started months ago actually! I posted the following circuit that allows switching from parallel to series while maintaining volume control:

[Invalid or Expired Link Removed]
In the first drawing you need to wire the like numbers together. The second and third drawings show each switch position.

http://www.talkbass.com/forum/showthread.php?t=422462

RyreInc · Mar 3, 2009

l0calh05t said:
Try this instead (also more compatible with switching):

I'd like to see this switching scheme--I think you're on to something here regarding tone.

l0calh05t · Mar 4, 2009

RyreInc said:
I'd like to see this switching scheme--I think you're on to something here regarding tone.

At the time I was thinking the hot leads of the pickups are connected to the top of the volume pots and not the wiper in a jazz bass, so switching would have been very easy. Since they are wired to the wipers though, this would require a few more poles...

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J in series with separate volume knobs. Schematic.

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