Duff Mckagan Hot Stack noise.

J

Jmac222

New member
My Duff Mckagan Jazz Bass Special has a Seymour Duncan Hot Stack at the bridge. I would love to use it along with the P-bass pickup, but it’s too noisy for my taste. I thought the Hot Stack was noiseless. I included the wiring diagram provided by Fender in this post. On the diagram I see one lead coming from the Seymour Duncan, but the return connections seem vague. This is my first P-J bass. I’m used to Jazz basses that typically have the single coil hum if both pickups aren’t at 100%. If any one has experience with these pickups, or this bass or a P-J configuration, can I get some tips on dealing with the noise? By the way, it’s not the noise of a badly wired bass. It’s a typical single coil hum, but it’s not noiseless.
 

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that doesnt look like correct hot stack wiring, is the duncan pup stock or a replacement? typically red/white would be soldered together and insulated, black would be hot and green/bare would go to ground. fenders and duncans are typically out of phase so youd flip the black and green wires. not sure if this is a special pup just for fender?
 
I’m assuming it’s not wired correctly out of the factory. It’s great news to hear that you agree. I’m having trouble getting wiring info from the Seymore Duncan site.
 
The diagram you posted looks correct based on what I found. This could be as simple as a loose ground or what is happening is the green/white connection is exposed and grounding out which will split the pickup.
 
Jmac222 said:
I’m assuming it’s not wired correctly out of the factory. It’s great news to hear that you agree. I’m having trouble getting wiring info from the Seymore Duncan site.
Click to expand...

It is wired correctly to work with the Fender P pickup based on what I've seen posted elsewhere.
 
Please correct me if I’m wrong. The pickup has separate windings that need reverse polarities to cancel the noise?
 
In your explanation you indicate the correct wiring using the different color wirings. Where can I acquire an explanation of what each colored wire on the pickup does so I can understand what’s going on? Thank you by the way.
 
I'm not sure on the details but I think in the Stacks, the lower coil isn't wound as much as the top coil so the lower is there to cancel the noise. I could be wrong though but the same concept for humbuckers comes in to play.
 
on old school stacks, the top and bottom coils are pretty similar. on the next generation stacks, like the stack + models, the bottom coil is much smaller.

the black should be north coil start, white north coil finish. green should be south coil start, red south coil finish. in the diagram it looks like black is hot, red and bare are ground and the white/green is the series link. i dont think thatll work correctly unless im missing something
 
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