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Post by simes on Nov 27, 2011 6:14:24 GMT -5
Hi.
I have a PU that I need to identify, and the only reference I have is that of inductance in Henries. I have a multimeter, although I don't really know how to use it. Is it possible to get this value with a multimeter? Which wires would I measure (it's a 4-wire HB)?
Either that, or ...
Does anybody have a Wilde L500L or L500XL that they could measure the DC resistance of, and tell me which wires to join and which to measure in order to compare this PU?
Cheers,
Simon
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Post by asmith on Nov 27, 2011 6:44:46 GMT -5
Si, If you're looking to measure something's inductance, you can either buy an appropriate meter, or use one of these three methods. Needless to say, it's a difficult venture. For completeness' sake, why not measure the individual values of the two separate coils? Inductances in series sum, so it's a simple case of X+Y = Total. This sounds like a different question, like you're looking to determine a DC resistance. Is that correct? If so, and you have one of those pickups and a multimeter, it's pretty simple. There should be a setting that measures resistance. A bit of Googling should bring up a reasonable guide to it... ...ayup, it does.
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Post by simes on Nov 27, 2011 8:57:25 GMT -5
Actually, I'm just trying to determine whether a PU I've just received is a L500L (which is what I ordered) or a L500XL (which is what the handwritten label says, although the Wilde people think it's probably a wrong label). So if I know what an L or an XL has in terms of DC resistance, I can measure my PU and identify it.
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Post by newey on Nov 27, 2011 9:14:42 GMT -5
Assuming there's a difference in the resistance. Bill's website doesn't list the DC resistances, have they given you that info to compare?
If they're telling you it's mislabeled, what are they basing that info on?
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Post by simes on Nov 27, 2011 10:04:48 GMT -5
No, they haven't. I e-mailed them to tell them the pickup was labelled XL instead of L. They offered to replace it, but said that it was almost certainly a mis-labelled L. I asked how I could check that with a multimeter, but they haven't replied yet.
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Post by cynical1 on Nov 27, 2011 10:22:44 GMT -5
As Google searched, retrieved from the Fender Info-Base™ (F.I.B.™) > Bill Lawrence Wilde-Gate forum, and copied and pasted here: L-500 L 11,8 K L-500XL 13,3 K In combination with a Q-filter, the L-500XL (in standard humbucking mode, no caps or resistors) gives a reading of 2K with full filter effect
...and, as offered in a separate post to that thread: ...but the L-500XL actually reads 14,1K, not 13,3K. I bought it in 2002 if that matters at all...You can follow the entire thread here under DC readings. Happy Trails Cynical One
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Post by simes on Nov 27, 2011 15:17:06 GMT -5
Great. Thanks. I did look on the Wilde forum; don't know how I missed that. OK [remember I don't know the first thing about resistance, inductance, etc.], my multimeter set to 20K range shows a value of 1 when not connected to anything. When touching the black and white wires, with the red and green twisted together as per this thread guitarsbyfender.yuku.com/topic/3027/L-500s-options-and-characteristics#.TtJsfVY-oZp, I get a reading that fluctuates around 15.3K, so subtracting the 1 that was already there, that would be 14.3K, i.e. an L500XL, right?
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Post by JohnH on Nov 27, 2011 15:39:32 GMT -5
It sounds like you are measuring resistance correctly, but you don’t need to subtract the ‘1’, thats just what the meter reads when its off the scale. So that is reading 15.3k. The differences in the readings could be partly due to the accuracy of the meter and the consistency of manufacture. Resistance is not a great way to tell what a pickup is like, but in this case it does look like a very hot pickup indeed and most likely its an XL not an L, since it is beyond the range of values quoted on those posts.
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Post by simes on Nov 27, 2011 17:19:22 GMT -5
OK, many thanks for the guidance, guys.
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