FDP Forum / Lawrence Pickups/ 5 messages in thread.

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Malcolm

Contributing Member
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Edmond, OK

Nov 6th, 2017 12:55 PM        

Don't know if many people on this forum pay attention to Bill's p'ups.<br /> I'm trying to remember what I've forgotten about his 'Henries' ratings. Can't find anything on his site detailing them.<br /> Help?



Peegoo

Contributing Member
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Enjoying

the downtime
Nov 6th, 2017 06:14 PM        

Henries are a measure of inductance. You can use DC Ohms resistance and Henries ratings as a starting point, but they are not indicative of a pickup's tone because there are too many other variables like coil size, wire gauge, wrap type, magnet type and Gauss rating, etc.



Achase4u



U.S. - Virginia

Nov 6th, 2017 07:53 PM        

They are mostly good measurements of consistency in manufacturing and not quite as good for judging resultant sound. However they are great for identifying when something is a miss(or materials have changed) if you are trying to make the same pickup time and time again.



Malcolm

Contributing Member
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Edmond, OK

Nov 8th, 2017 11:26 AM        

I knew that you couldn't judge tone by henries. But, I thought you'd be able to tell if high or low output.<br /> <br /> Want a low output p'up.



Achase4u



U.S. - Virginia

Nov 8th, 2017 02:02 PM        

Unfortunately no, that isn't an indicator of output by itself. I think Bill Lawrence stated something that you can vaguely get an idea of the the mid range of a pickup with Henries. That was on the old site.<br /> <br /> For instance, swapping in alnico 3 in the same pickup that had alnico 5 will shoot the Henries up because of the extra iron content. This doesn't equate to more output though, as alnico 3 is a weaker magnet, and it doesn't say much about the output in mV of the inductor as a whole. It would be nice to have a standard for mV ratings on pickups but it is hard to do as you can't just push a signal through it like audio equipment.



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