STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

[Virgil Guitars]

Hey Everyone...
I bought the STC-3P Tone Circuit and according to the wiring diagram, the only thing it mentions in regards to the pickups is soldering the "Hot outputs" from both the Bridge & neck pups, but does not mention what to do with the other wires. On the wiring diagram of the SJB-5's, it shows only 2 volumes and a master tone wiring diagram, which obviously won't work. Does anyone happen to have a wiring diagram that combines the 2, or, how to wire these pups to the Tone Circuit EQ preamp?

Thanks so much!

 

[Funkfingers]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

Welcome to the forum.

Do you propose to run your bass guitar with a volume pot per pickup or with the balance pot and master volume controls supplied in the STC-3P system?



Pickups > Balance > EQ system http://www.seymourduncan.com/wp-content/uploads/2015/05/JazzBass_STC3P.jpg

Pickups > dual Vol. pots > EQ system - forbidden by new schematic diagram generation algorithm. :smack:

 

[Virgil Guitars]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

Welcome to the forum.

Do you propose to run your bass guitar with a volume pot per pickup or with the balance pot and master volume controls supplied in the STC-3P system?



Pickups > Balance > EQ system http://www.seymourduncan.com/wp-content/uploads/2015/05/JazzBass_STC3P.jpg

Pickups > dual Vol. pots > EQ system - forbidden by new schematic diagram generation algorithm. :smack:

HA! I knew someone had the secret decoder ring... now for some coffee and think about the second option... hmmm... Thanks SO much, you won't believe this bass! I swear I'll post a pick today!

 

[Funkfingers]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

For the twin volume pots circuit, you are either going to have to invest in a 250k push-pull pot or sacrifice the pull-out Slap Contour preset EQ curve function.

Imagine the STC taking the position of the passive treble roll off control. The PCB's input cable receives the combined outputs from the volume pots. The PCB's output cable goes to the Tip contact of the TRS output jack socket.

 

[Virgil Guitars]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

The next thing is this: The diagram shows that the pickups simply have 2 wires, black & white. These pups actually have a green, red, black, white and bare(ground), so I'm assuming that I need to solder the bare to the black, then go to ground and the red & green should be soldered together? Thanks

 

[Funkfingers]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

For your four-conductor + shield output cabling,

Black = Hot (white)
Green = Ground (black)

What you do with the SD red and white conductors depends on whether you want series or parallel interconnection between the coils of each pickup.

Bare goes to ground permanently.

 

[Virgil Guitars]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

On the pickups diagram it has you tape off red & white wires, so I can make sense of your above explanation. So if I'm not going for the series/parallel in my case, they would just be soldered together, taped and not used? Thanks so much!
V

 

[Funkfingers]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

Affirmative.

Red/white conductors soldered together and insulated.

 

[Funkfingers]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

you won't believe this bass!

Back to school!

Your pickup covers remind me very much of blackboard chalk dusters. The graphics remind me of the graffiti on an old-fashioned, lift-top, school desk. All that is missing is an ink well into which a pen could be dipped.

 

[Virgil Guitars]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

Ha! Very cool (I think?) Yeah, I'm about to test the pups before soldering everything up - thanks again, V

 

[Virgil Guitars]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

11+ ohms and 20+ ohms... nice...

 

[Funkfingers]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

I see that this instrument is now up for sale via this forum's Trading Post room.

I hereby claim my consultancy fee percentage of the final selling price. :deal:

 

[Virgil Guitars]

Re: STC-3P Tone Circuits and the SJB-5 Wiring Diagram needed

I wouldn't be opposed to that, but we have to work on the chalkboard compliment first!lol :banana: