Low output problems

[Lycking]

Right, so i've made 2 test pickups, 1 standard single coil and 1 humbucker, made of 2 single coils (Regular humbucker sized, wired in series). Both turned out with lower output than i expected, so the sc has a DC of 4.04 and the HB has 7.8. But the single coil has almost double the volume of the HB!

The HB is RW/RP of course, and it has no noise, even though it's not shielded off in a faradays cage.

So i really wonder how the 4.04 dc can have so much more output than the 7.8..

Also, the 5th and especially the 2nd string in the single coil has barely any output! The 1st string has 4-5 times more volume than the 2nd..

I've magnetized them with 3-4 passes through 3 neodynium magnets with 24 lbs pull each, but is that maybe too less?

I'm kinda lost on this one

[Lycking]

Oh, and they're both wound with 42 AWG SPN and has Alnico 2 rods

[David King]

Alnico 2 seems to be the most resistant of the alnicos to magnetize. I use a block of n42 that's 24 x 50 x 13mm with soft iron "shoes" and I'm still never sure if I got a full charge. I've started working with magnetized A2 rods until I can get a real magnetizer.

[Lycking]

David,

Thanks alot!
Tried charging the magnets some more, and it fixed both problems :-)

Do you know if there is a table value to compare the difference in charging A2 vs A5?

[David King]

Lycking,

that's an excellent question. It's probably something to do with either Remanence - Wikipedia, the free encyclopedia
or Coercivity - Wikipedia, the free encyclopedia and or their inverse properties. The physics folks around here will know a lot better.

i found this table but i have no idea what it means.. Electromechanical Sensors and Actuators - Ilene J. Busch-Vishniac - Google Books