Dimarzio PJ

[air_leech]

hey,

I want to make a passive harness for the Dimarzio PJ (DP-122&123 with the hex pole pieces), same controls as a Jazz Bass unless someone can explain how to wire an individual tone control for each pickup (a' la' '62 stacked knob Jazz).

should I wire a 500k pot for the P and 250 for the J or 250 is the value for both of them?

what value for the tone pot?

which value should the Cap. be to get decent treble control with these pups?

thanks!

[A9X]

How bout this?

Ditch the switch, just solder the two outputs together.
http://www.guitarelectronics.com/product/WDUHH3T2202

Use the same value for both vol controls, either 250 or 500k, log. Tones are linear, and I'd start with 47n for the caps, but you'll need to experiment with values to find a range that works for what you want, maybe even different values for each pickup. 22n-100n is probably the biggest range of values you'll need to try.

[air_leech]

thanks,

after soldering the the outputs together I should solder them to the jack's tip leg?

I dont see a point in 100uf cap, should be too harsh and trebley, I'll stick to .47, .33 and .22 and keep the best sounding of the three.

[A9X]

Originally Posted by air_leech

thanks,

after soldering the the outputs together I should solder them to the jack's tip leg?

Yes.

Originally Posted by air_leech

I dont see a point in 100uf cap, should be too harsh and trebley, I'll stick to .47, .33 and .22 and keep the best sounding of the three.

It's 100 nanofarad not microfarad. And you have it backwards; a 100n will cause more high frequency roll off not less, ie will make the system darker sounding.

In case you're not aware, paralleling capacitors the values add, unlike resistance. So for example, 47n in parallel with 33n = 80n.

[air_leech]

thanks,

for some reason when I replaced a 0.33 cap in my Jazz bass with a 0.47 one it became much brighter.