Jazz Bass wiring help

[Mykel]

I have a few issues with my Jazz Bass and need to rewire it completely. Right now electronically I have:

Seymour Duncan Classic Stack in the neck and Hot Stack in the bridge

1 250k push pull for neck volume and series/parallel between the pickups

2 250k for bridge volume and tone

and a switchcraft output. I think the cap is an .022 but i'm not sure but that's irrelevant.

My problem is low output, i crank the sansamp's drive and it sounds like I've got a tube screamer on half. Has about 75% of the power it should so I've decided to gut it and get all new pots in hopes to reprimand the problem and start fresh.

I want to do 500k pots but my question is should the tone pot still be 250k and if not what are the differences tonally I should expect from a higher value tone pot? I know what the difference is with volume but not tone.

Also, I intended the push pull to activate the pickups in series when I pulled it up but instead it's on when the knob is down. how do I fix that when I install the new one?

thanks for any help and sorry for the long winded post i've had this bass since 98 and want to restore her glory.

 

[Mykel]

Re: Jazz Bass wiring help

bump

 

[Funkfingers]

Re: Jazz Bass wiring help

I have a few issues with my Jazz Bass and need to rewire it completely. Right now electronically I have:

Seymour Duncan Classic Stack in the neck and Hot Stack in the bridge

1 250k push pull for neck volume and series/parallel between the pickups

2 250k for bridge volume and tone

and a switchcraft output. I think the cap is an .022 but i'm not sure but that's irrelevant.

My problem is low output, i crank the sansamp's drive and it sounds like I've got a tube screamer on half. Has about 75% of the power it should so I've decided to gut it and get all new pots in hopes to reprimand the problem and start fresh.

I want to do 500k pots but my question is should the tone pot still be 250k and if not what are the differences tonally I should expect from a higher value tone pot? I know what the difference is with volume but not tone.

Also, I intended the push pull to activate the pickups in series when I pulled it up but instead it's on when the knob is down. how do I fix that when I install the new one?

thanks for any help and sorry for the long winded post i've had this bass since 98 and want to restore her glory.

Some photographs of your wiring or a hyperlink to the schematic diagram that you followed when wiring the bass would help.

Low output could be due to the pickups being set too far away from the strings. It could be because you have accidentally wired the coils within each Stack in parallel with themselves rather than in series. It could be because you have inadvertantly grounded the linked red/white conductor wires.

Changing to 500k pots should pass more treble frequencies but it may also make those "honky" blended pickup tones more difficult to dial up.

The mistake on the push-pull S/P control is that you have interpretted the contact layout upside down. The series link jumper connection should lie between the two contacts nearest to the pot chassis.

So, you want this...

http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=jazz_bass_stacks

...meets this...

http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=jass_bass_sp