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Very low output from bridge pickup


Lifer
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P bass pickup in neck position, soap bar at the bridge.  Vol/vol/tone.

 

Neck pickup sounds glorious and volume works as it should.

 

Bridge pickup has very low output and volume seems to be on or nothing,  but it’s so low it’s difficult to tell.

 

Couple of wires from the bridge pickup (white and green at the top of the photo) aren’t connected to anything and sleeved off.

 

I have a multimeter but don’t know what I’d be looking for!

 

Neck volume - bridge volume - tone

IMG_7964.thumb.jpeg.5e787ab5c1e92d766e4291bca825c4aa.jpeg

 

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White and green are connected together and isolated because your pickup is working as a humbucker typically wired in series, but you can wire it in parallel if you want, hence the 4 wires plus earth "plain" wire.

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17 minutes ago, Hellzero said:

White and green are connected together and isolated because your pickup is working as a humbucker typically wired in series, but you can wire it in parallel if you want, hence the 4 wires plus earth "plain" wire.

Does that mean I can get a push/pull pot and coil split?

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Just checking I’ve got this right before I start.

 

Red and white should be soldered together and isolated rather than green and white.

 

Green should be soldered to the back of the pot.

 

Black should be soldered where red is now.


Bit disappointing there’s this much work to do on a brand new bass!

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I know it's easy to project one's own experiences but it might be a manufacturing issue with the pickup - if one magnet has been put in the wrong way round, you'd get that. Happened to me with a Cort Space, which has split magnets and I can only assume that one magnet was put in the wrong way round - the consequence was that with the blend set to both pickups equal, the B, E, and A strings were very thin and nasal, the D and G sounded fine.

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A bit of testing this morning with a plan to swap some leads around later to solve the problem.  Both volume pots read the same resistance on the meter so it’s not a duff pot. Looking at the back of the pup is it worth swapping the red and white wires on the pot to see if they’ve been wired wrong, or would there be no output if that were the case?IMG_7971.thumb.jpeg.aa530f9ecc7830e288b918173cc375e5.jpeg

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After rehearsal last night, a) this thing sounds incredible even with just the P pickup b)I think it’s just a duff pot as when wiggled/pressure applied there is signal.  When I was measuring with the multimeter the bass was lying on its front on a cushion so there would have been pressure being applied to the pot.  I will solder in a spare I have exactly as is wired not to test.

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Update to say Dunable have got back to me, checked the wiring in the photo and confirmed it’s correct, did a bit of trouble shooting and have offered to help find a tech and cover the cost of repair so much happier on that front 😊

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