Alt 8 is really high output vs JB

BluPup8

New member
I was doing something to something, yes changing the JB in my Hamer to an Alt 8. The output of the Alt 8 clean was huge compared to the JB. They are both wound plenty hot so I thought it must be the magnets. I found a table of magnet types and their strengths. The AlNiCo 8 is only a little bit stronger than an AlNiCo II. The AlNiCo V is a much stonger magnet than either of them. How come so much output then?:feedback:

http://www.salvarsan.org/content/alnico.html
 
Re: Alt 8 is really high output vs JB

Correct me if i'm mistaken.
You have to magnetize alnico alloy to create a magnet, therefor you can kinda control the gauss up to a maximum point. Not all alnico V mags will be gaussed to the maximum, I suppose?
other than that with the wire there's number of winds, winding technique?
 
Re: Alt 8 is really high output vs JB

No, the A8 is actually louder while the strength is about the same.

The magnetic attraction value from the table will not be proportional to the amplitude in an electric wave generated in the resulting field. The "H" value is what you are looking for.
 
Re: Alt 8 is really high output vs JB

A8 is stronger than A2 or A5.
 
Re: Alt 8 is really high output vs JB

A8's percieved higher output also depends on how you eq your amp. it's got a ton of mids, and if you don't dial them in then it won't seem like it's got that much more output.
 
Re: Alt 8 is really high output vs JB

my Fender Cyber Deluxe has a trim input with an indicator for the inpur level. I can tell you right now that according to that, pickups with and A8 magnet are more powerfull. I have to adjust the trim lower to get a good input level.
 
Re: Alt 8 is really high output vs JB

No, the A8 is actually louder while the strength is about the same.

The magnetic attraction value from the table will not be proportional to the amplitude in an electric wave generated in the resulting field. The "H" value is what you are looking for.

I'm not sure that's right?
http://en.wikipedia.org/wiki/Faraday's_law_of_induction
The amplitde of the voltage is proportional to the magnetic flux density, "Br" in the table. That seems to be the direct opposite of what you said.

So basically, a stronger magnet gives more voltage output. How strong are the magnets? Refer to table :banghead:
 
Re: Alt 8 is really high output vs JB

Output is just as much perceived as absolute. Pickups that have a strongly centered frequency response can come across as weak. The reason is because only a few frequencies are coming through. However if you have a pickup that is well balanced and has a strong all round frequency response, its perceived loudness should be greater.

I have tried a lot of pickups and I have found some low K pickups sound huge and some high K pickups sound weak. It all depends on what frequencies are being accentuated and what frequencies are being attenuated.

For instance I have a Kent Armstrong Mega Distortion and it has a resistance of 22k, but yet its frequency spread is rather small, so it doesn't sound HUGE! Also its output in millivolts although high, doesn't make it terribly loud, since the EQ is rather focused.

I also have a Dimarzio HFH which has a very low K reading and when you take its narrow EQ and combine it with a dark and mellow guitar it sounds horribly weak, but with a bright and resonant guitar it sounds good and fairly loud. I also had two PJ Marxx 812's which although having a low K reading had a wide EQ, which combined with clarity made them sound bigger than their output in millivolts.
 
Re: Alt 8 is really high output vs JB

I have tried a lot of pickups and I have found some low K pickups sound huge and some high K pickups sound weak. It all depends on what frequencies are being accentuated and what frequencies are being attenuated.

That's really interesting, I find that with booster pedals to. A treble booster on the bridge pu sounds bigger than a flat booster, but on the neck pu the flat boost is a bit bigger than the treble booster.
 
Re: Alt 8 is really high output vs JB

No, the problem is that "strength" in magnets is complicated and has many parameters, and "strength" in electromagnets is even more complicated.

I can measure my alnicos a couple different ways and they come out in different order.
 
Re: Alt 8 is really high output vs JB

No, the problem is that "strength" in magnets is complicated and has many parameters, and "strength" in electromagnets is even more complicated.

I can measure my alnicos a couple different ways and they come out in different order.

So basically I should just not be too worried and know that if I put an AlNiCo 8 in place of my II I'm going to get more output.
 
Re: Alt 8 is really high output vs JB

So basically I should just not be too worried and know that if I put an AlNiCo 8 in place of my II I'm going to get more output.

Yes :)

Numbers and real-world-results don't always correspond with this stuff.
 
Re: Alt 8 is really high output vs JB

Just to clarify: the same pickup with A8 is much louder than with A5 and Ceramic.

It's just not that easy to pick the right number out of the physics data.
 
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