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Old 09-27-2010, 06:14 PM   #1
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A question about alnico magnets

A question about alnico magnets, is there any difference in tone with rough cast alnico and polished alnico magnets and if so what is the audible difference? I have an alnico magnet out of a 80's Shaw PAF, I'm thinking about swapping it into a 490R, I don't have a pole tester, can I use the original magnet to check poles? I know same poles oppose and opposite poles attract and I believe N pole usually faces the bridge, thank you in advance for any help.
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Old 09-27-2010, 06:30 PM   #2
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Re: A question about alnico magnets

I would say yes they will sound different. I can't explain why but I am thinking so. Yes you can use the old mag to check for proper polarity. Like poles will repel each other.
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Old 09-27-2010, 06:51 PM   #3
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Re: A question about alnico magnets

i have found the rough cast magnets not so harsh a little sweeter or smooth than a polished magnet
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Old 09-27-2010, 07:04 PM   #4
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Re: A question about alnico magnets

thank you for the help guys
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Old 09-27-2010, 08:37 PM   #5
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Re: A question about alnico magnets

Most pickups, including Gibson, the South Pole of the magnet faces the screw coil (in both neck and bridge pickups). There are other manufacturers that do just the opposite, but that is more the exception than the rule.
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Old 09-27-2010, 09:36 PM   #6
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Re: A question about alnico magnets

Thanks Fab
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Old 09-29-2010, 02:14 PM   #7
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Re: A question about alnico magnets

OK I did it guys, I'm so happy with the result, was my first magnet swap, I heated the pickup with a hair dryer to melt the wax, so then the old magnet slid out easy once once that I had melted all the wax, I never new the 490R had wooden magnet spacers. It now sounds like a completely different pickup with the vintage Shaw magnet installed in it, what an improvement from DRAB TO FAB and it only took me around an hour to do the job, I hope I can find some more of the 80's Tim Shaw magnets. I had read before that what made the Shaw PAF's sound special was the magnets they used they are rough cast and polished on the sides.
A big thank you all for all your help guys and a special thanks to Kojack who gave me the idea to swap magnets.
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Old 10-02-2010, 01:08 AM   #8
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Re: A question about alnico magnets

Quote:
Originally Posted by HOT-BRIT View Post
OK I did it guys, I'm so happy with the result, was my first magnet swap, I heated the pickup with a hair dryer to melt the wax, so then the old magnet slid out easy once once that I had melted all the wax, I never new the 490R had wooden magnet spacers. It now sounds like a completely different pickup with the vintage Shaw magnet installed in it, what an improvement from DRAB TO FAB and it only took me around an hour to do the job, I hope I can find some more of the 80's Tim Shaw magnets. I had read before that what made the Shaw PAF's sound special was the magnets they used they are rough cast and polished on the sides.
A big thank you all for all your help guys and a special thanks to Kojack who gave me the idea to swap magnets.
You're welcome. Next step, get some magnets here:

Negozi eBay - Addiction-FX Guitar and Sound, Humbucker Bobbins, Pole Screws, Pole Slugs su eBay.it

IIRC, those Shaw magnets are just short Roughcast A5s... anyway, have a go with an UnOriented Alnico 5 (UOA5) in your bridge p'up. I'm pretty sure you'll like it lots!
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Old 10-02-2010, 08:00 PM   #9
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Re: A question about alnico magnets

Is there an american source for magnets like the Italian business?
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Old 10-02-2010, 11:34 PM   #10
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Re: A question about alnico magnets

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Originally Posted by Mpcoluv View Post
Is there an american source for magnets like the Italian business?
If you're talking 'bout Addiction FX, Dennis is located in Arizona...
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Old 12-02-2010, 04:55 AM   #11
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Re: A question about alnico magnets

bumping
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