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Topic: building a new pickup |
Larry Hillman
From:
New York, USA
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Posted 19 Nov 2007 11:19 am |
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the pickup on my 8 string bit the dust. so, will be
building a new one. this time i will be useing a
bar magnut. does anyone have a furmula for ohms to
tone. 42 ga. wire. i was told maybe 5000 turns. TKS
Larry |
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Rick Collins
From:
Claremont , CA USA
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Posted 19 Nov 2007 12:38 pm
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| Quote: |
| this time i will be useing a bar magnut. |
Why not use a bar magnet? If you use a bar magnut, you'll never be able to keep those big squirrels off your guitar.  |
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Gary Cosden
From:
Florida, USA
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Posted 21 Nov 2007 4:47 am
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| According to a magnet wire site I just visited #42 is 1,659 Dc OHM/1000 ft. |
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Gary Lynch
From:
Creston, California, USA
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Posted 21 Nov 2007 6:43 am
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This is a question for the Guru. If luck is with you, Rick Aiello may answer your question. He uses a #38 wire if I am mistaken, on some of his assemblies.
http://www.horseshoemagnets.com/_sgg/m1_1.htm |
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Bill Creller
From:
Saginaw, Michigan, USA (deceased)
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Posted 21 Nov 2007 9:07 am
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| Old Rick pickups must have been wound by eyeball engineering, like "that looks about like enough wire on there" I worked on two pre-war bakelites, one had 1277 ohms and the other had 1514 ohms. I have a late 40s 7 string that has 2100 ohms. For some odd reason, the low resistance windings seem to have great tone. Then again I have been using DiMarzio 7 string types that have 20.75K ohms. and they sound good too, so it's a good question as to what is the ideal winding. |
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Gary Shepherd
From:
Fox, Oklahoma, USA
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Posted 23 Nov 2007 3:49 pm
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What are you going to use for a bobbin? The old one?
_________________
Gary Shepherd
Carter D-10 & Peavey Nashville 1000
www.16tracks.com |
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Jim Phelps
From:
Mexico City, Mexico
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Posted 23 Nov 2007 3:51 pm
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| The old ones had low resistance because they used the bigger wire, like the #38... lower resistance per turn than the small wire they use now, but the more turns you have, you also have more capacitance. |
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Richard Sevigny
From:
Salmon Arm, BC, Canada
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Posted 23 Nov 2007 4:55 pm
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Bill Lawrence's website has a lot of info on why pickups sound like they do.
This is my limited (and possibly wrong, please pipe in and correct me  ) understanding of p'ups: output seems to be a function of total resistance and magnetic field strenght - a hot pickup has a strong magnet and at least a moderate amount of resistance. Resistance also affects the frequency response of the pickup: the higher the resistance, the more trebly a pickup will tend to be. Tone is a function shape of the windings. A tall skinny bobbin (ie strat-shaped) has a thinner tone, while a shorter, squatter bobbin gives you a fatter tone.
At this point, I'm not sure of the effect of wire gauge on the equation.. 
_________________
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If at first the idea is not absurd, then there is no hope for it.
-Albert Einstein |
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