Is it possible to wire a humbucker so that it doesn't buck hum?

Natman

Member
I have a 4-conductor humbucker here and I can't shut up the hum. I have a coil split switch on it, but what really concerns me is that it hums like mad ALL THE TIME. Is it actually possible to wire the coils wrong so that they are not cancelling hum? FWIW, it is not a Duncan, so I don't know for sure how the color codes go. I tested each pair for continuity and wired them up...

Thanks for the help!
 
Re: Is it possible to wire a humbucker so that it doesn't buck hum?

You CAN, but none of those options will sound like a humbucker should, so you should notice right away. Single coil, series out of phase, and parallel out of phase will not buck hum. But Single sounds like a single (and you can tell if you touch a pole of each coil with a screwdriver - one coil will be MUCH softer than the other. The OOP wiring will sound INSANELY thin.
 
Re: Is it possible to wire a humbucker so that it doesn't buck hum?

Jester700 said:
You CAN, but none of those options will sound like a humbucker should, so you should notice right away. Single coil, series out of phase, and parallel out of phase will not buck hum. But Single sounds like a single (and you can tell if you touch a pole of each coil with a screwdriver - one coil will be MUCH softer than the other. The OOP wiring will sound INSANELY thin.
ithink he's asking if he screwed up wiring his humbucker because it is emitting hum
 
Re: Is it possible to wire a humbucker so that it doesn't buck hum?

If you swap the hot and ground you will have big time hum.
 
Re: Is it possible to wire a humbucker so that it doesn't buck hum?

TheArchitect said:
If you swap the hot and ground you will have big time hum.

Not necessarily, only if the return wire is connected to the pickups screening.

As i've said before, the use of terms like "hot" and "ground" instead of the more technically descriptive "signal" and "return" only serves to cause confusion.

In any SD humbucker with 4 conductor wiring you have a black wire, a red wire, a white wire, a green wire and a screen wire which is bare and makes contact with the foil screening. The red and white wires are normally connected to bridge the two coils, the red wire being the signal of the one coil and the white wire being the return of the other coil.

Once connected, the signal is normally black and the return green. The screen goes to ground, and normally so does the return, but there is no reason why the they can't be swapped, as long as the screen wire still goes to ground, so that the green wire is the signal and the black the return. The decisions are arbitrary and based on the relative polarity of any other pickups in circuit.

It's my guess that Natman is listening to inductive noise from the guitar's wiring, not the humbucker. This is a common mistake, assuming that a humbucker will cure all inductive noise. If the guitar's control circuitry isn't screened all the wiring will be acting as r/f aerials.
 
Re: Is it possible to wire a humbucker so that it doesn't buck hum?

Thanks fellas -It's true that I have not go the pickguard screwed onto the body at the moment, but I do have copper shielding tape everywhere (I assume that's what screening means). I believe it's the wiring that's off, but I could be wrong of course. Is it possible to check which is the send and return for each coil? I simply checked that each coil had 2 wires (and thus not wiring the coils to each other prematurely), but I didn't stop to think if I needed to specifically have send or return for each one before going to the switch. I think I meesed up my humcancelling theory...
:smack:
 
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