Uneven Coil Winds

rrhoads17

New member
I have started making my own pickups, and I when I wind the coil, there's a little more wire on one side of the bobbin than the other side. If you stand up the bobbin vertically, it looks like a slight incline. Will this make a big impact on the sound?
 
Re: Uneven Coil Winds

Welcome to the forum!

I think that if it was wound evenly, installed, and then I heard it...then took the pickup out and wound it unevenly, I probably couldn't tell the difference. I am sure people will come in with their experiences.
 
Re: Uneven Coil Winds

The magic of unbalanced coils. With HB's, there's a tolerance limit as it's difficult to get both coils to have exact resistance. At some point the difference becomes audible. When the coils are similar, the 'humbucker effect' kicks in which increases volume and mids, and reduces noise, high-end, and clarity. Unbalanced coils mean the entire humbucker effect isn't 100% present, so some single coil sound comes thru. That means a certain degree of more treble and clarity, and less midrange, depending on the difference between coils. I particularly like that for neck HB's, which can be on the warm side, and sometimes muddy. Clears them up. I make hybrid HB's by pairing up coils of existing PU's, as do some of the other members here.

The '59/Custom hybrid is a bridge PU with a huge difference between coils 4.1K vs 7K. That makes for a bright, clear PU, then figure in the A5 magnet which itself is bright and mid-scooped. It's popular with a lot of players, but not a PU for everyone. For me, a bridge HB with significantly mismatched coils needs a warm magnet, like an A2, UOA5, or A8 to have a balanced EQ.

I'd encourage you to use unbalanced coils in the PU's you wind. There's some nice benefits.
 
Re: Uneven Coil Winds

The magic of unbalanced coils. With HB's, there's a tolerance limit as it's difficult to get both coils to have exact resistance. At some point the difference becomes audible. When the coils are similar, the 'humbucker effect' kicks in which increases volume and mids, and reduces noise, high-end, and clarity. Unbalanced coils mean the entire humbucker effect isn't 100% present, so some single coil sound comes thru. That means a certain degree of more treble and clarity, and less midrange, depending on the difference between coils. I particularly like that for neck HB's, which can be on the warm side, and sometimes muddy. Clears them up. I make hybrid HB's by pairing up coils of existing PU's, as do some of the other members here.

The '59/Custom hybrid is a bridge PU with a huge difference between coils 4.1K vs 7K. That makes for a bright, clear PU, then figure in the A5 magnet which itself is bright and mid-scooped. It's popular with a lot of players, but not a PU for everyone. For me, a bridge HB with significantly mismatched coils needs a warm magnet, like an A2, UOA5, or A8 to have a balanced EQ.

I'd encourage you to use unbalanced coils in the PU's you wind. There's some nice benefits.

He's actually talking about coil geometry, the title is a bit misleading.
 
Re: Uneven Coil Winds

https://www.throbak.com/paf-pickups.html and scroll down!

If you look at these pics, you will see that even machine wind have an uneven coil geometry. Nothing to worry about. The impact to tone is probably little, but the reason why some boutique winder ask bigger money than SD. Rant over.
 
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Re: Uneven Coil Winds

He's actually talking about coil geometry, the title is a bit misleading.


Differences in wind pattern and tension will change the sound, just ask any PU winder. You can make hybrids/unbalanced coils with diffrent patterns and tensions. For those of us won't don't wind (and use coils from stock PU's), we tend to go by resistance as a measurement of differences, because PU makers rarely share any secrets about their PU's. Two stock PU's of the same resistance may or may not have much different in the wind and tension.
 
Re: Uneven Coil Winds

Many people believe that an uneven wind (usually caused by hand-guided winding) sounds closer to vintage pickups. I am sure someone with more pickup winding experience can explain how it sounds different, but I doubt I could hear it.
 
Re: Uneven Coil Winds

What Mincer said. A heavy scatter wind really lowers the internal capacity, this is measureable and probably audible. The different coil geometry with an comparable tension (like on the pics on the throbak site) probably not.
 
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Re: Uneven Coil Winds

I've been playing my Fralin mini hums for a week and they sound really vintage. They hand wind their pups but I have no idea what factors ultimately cause the vintage sound. :dunno:
 
Re: Uneven Coil Winds

Agreed, some asymmetry is normal if you're hand-guiding the wire (modern, fully automated setups used by bigger manufacturers tend to be more uniform)

Assuming everything else is equal (tension, turns, wire, etc), the geometry of the wind can make a small difference in the final sound. These differences will tend to be more apparent on taller coils compared to shorter coils, such as humbuckers.
 
Re: Uneven Coil Winds

Many people believe that an uneven wind (usually caused by hand-guided winding) sounds closer to vintage pickups


The original 1950's PAF's were all over the map on resistance and coil geometry, which meant that the coils were usually unbalanced, one part of giving them their 'vintage' sound (I've seen pics of really lop-sided winding). I'm surprised that most recent-production PAF replicas have balanced coils.
 
Re: Uneven Coil Winds

Not a pickup winder myself so this may be dumb or ignorant or both. But it seems to me that a slightly hourglass-shaped wind on singlecoils with rod mags would put more wire into the stronger areas of the magnetic field. No idea how that might affect tone or whether it would make any difference at all.
 
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