Wiring a stack knob jazz

[Jamesemt]

I've bought a stack knob control plate, but it's all unsoldered.

I've had a look at the pdf on the Fender website, but it isn't very clear were to put the orange capacitors I've got with the kit.

Does anyone have an idiots guide as I've never really dabbled with soldering before.

[BOD2]

Would this be what you're looking for ?

[url="http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=jazz_bass_blend"]http://www.seymourduncan.com/support/wirin...jazz_bass_blend[/url]

If not try looking for more at

[url="http://www.seymourduncan.com/support/wiring-diagrams/"]http://www.seymourduncan.com/support/wiring-diagrams/[/url]

[Jamesemt]

Thanks but I can't see the diagram I need - its a twin knob control plate with a tone for each volume.

[BOD2]

Ah - I understand now.

Have you the got the URL for the Fender PDF and I'll have a look.

[Jamesemt]

[url="http://www.fender.com/support/diagrams/pdf_temp1/basses/0190209C/SD0190209CPg2.pdf"]http://www.fender.com/support/diagrams/pdf...0190209CPg2.pdf[/url]

[BOD2]

Not the clearest of diagrams. They could learn a thing or two from Seymour Duncan.

Ok - you have a stcked knob, which is effectively two pots mounted on a concentric shaft. As you look at the inside of the plate (i.e. the way it's shown in the Fender diagram) the pot nearest the plate (the wider one) is the tone control and the pot nearest you is the volume control.

The earths are all common and are connected to the metal pot shells.

The capactors connect between one of the outer legs of the tone pots and the pot shell (to earth). If you orient the pots the same way as on the diagram then it should be clear which pot leg the capacitors connect to. Then you solder the other leg of the capacitor to the metal shell of the pot somewhere - anywhere really as they should all be connected together anyway.

Note the different capacitor values on the different pots.

You'll find you need a fair bit of heat to solder onto the pot shell. Apply the soldering iron to the shell first to heat it up then test it with some solder to check when it's ready. Then solder the capacitor onto it. A third hand is useful.

Does this help ?

[Jamesemt]

Cheers for that, I'll have a look over the weekend - I'm sure the two capacitors I've got are the same value??...

[BOD2]

[quote name='Jamesemt' post='314161' date='Oct 24 2008, 09:15 PM']Cheers for that, I'll have a look over the weekend - I'm sure the two capacitors I've got are the same value??...[/quote]

They'll probably actually both be 0.047 uF.

There is so little difference real between 0.03, 0.047 and 0.05 in practice that it's a surprise Fender have labelled it as such. Check the values printed on the capacitors and if they are the same just go ahead with them.

Also, for that type of capacitor is doesn't matter which way round they go - there is no "polarity" to them.

Good luck !

[Jamesemt]

[quote name='BOD2' post='314164' date='Oct 24 2008, 09:19 PM']They'll probably actually both be 0.047 uF.

There is so little difference real between 0.03, 0.047 and 0.05 in practice that it's a surprise Fender have labelled it as such. Check the values printed on the capacitors and if they are the same just go ahead with them.

Also, for that type of capacitor is doesn't matter which way round they go - there is no "polarity" to them.

Good luck ![/quote]

Thanks for that. I'll give it a go.

[RayFW]

Hi James,
Where did you buy your harness from as I'm thinking of fitting one of my jazzes with stack knobs.

Cheers,
Ray

[Jamesemt]

[quote name='rayfw' post='314220' date='Oct 24 2008, 10:45 PM']Hi James,
Where did you buy your harness from as I'm thinking of fitting one of my jazzes with stack knobs.

Cheers,
Ray[/quote]

[url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=370087265600"]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...em=370087265600[/url]

Took a week to be delivered and no duty/tax either.

Edited October 25, 2008 by Jamesemt

[RayFW]

[quote name='Jamesemt' post='314337' date='Oct 25 2008, 07:13 AM'][url="http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=370087265600"]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...em=370087265600[/url]

Took a week to be delivered and no duty/tax either.[/quote]
Many thanks for that.
Think I'll buy one next payday.

[Mr. Foxen]

The stack know plate I bought had resistors in, wired together to the output (I think), guessed it was to stop the two sognals bleeding into eachother.

[BassBod]

The one I had also had two extra resistors, to stop the stacks reacting to each other - I think it also dropped the output a bit, and made my jazz sound a bit dull and lifeless. Back to the three knobs for me.......

BB