Double Bass magnet buzzzzzz !

[triggerno9]

i've just built a bracket and put a precision bass pickup at the end of my fingerboard.
Looks good
sounds good
EXCEPT FOR THE CONTINUOUS LOUD BUZZING !!!
i was told i would need to shield it well. but didn't
can anyone tell me how to shield it (as i don't know)
i'm a piezo man normally !!!
cheers

 

[Huy Nguyen]

If my memory serves me right, a precision pickup is supposed to be humbucking because the one pickup is divided into two parts. The magnetic fields around each pickup cancel the other, thus "humbucking". I would guess that the two pickup halves need to be close enough to buck that hum or maybe you messed up soldering everything together. Make sure the halves are hooked up right and it helps alot to use shielded cable. Shielding can mean that the cable is shielded and/or the pickups are contained in a metal box that is shielded by connecting it to the ground.

Also, you might be close to a power source that causes humming, like a neon light or something like that. Sometimes a house has poor wiring and can cause you to buzz. HTH.

 

[ToneRanger]

Quick & rough solution: wrap the whole thing in aluminium foil. Make sure there's no gaps. Connect an earth wire to the foil.
It won't look pretty, but will let you know if shielding is what's needed.
You can do a neater job with 3M copper foil with conductive adhesive.