srp
Rookie Solder Flinger
Posts: 1
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Post by srp on May 12, 2006 8:46:58 GMT -5
I have a Strat where the orig owner replaced the stock pickups. It has a 3-way switch, seems to be wired for each pickup individually with no hum cancelling options. I was going to experiment with different pickup wiring schemes, but wanted to see how I can tell if either the current middle pickup or the old middle pickup which I still have is RWRP?
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Post by dunkelfalke on May 12, 2006 8:49:45 GMT -5
if the pickups stick to each other then one of them is rp (and often also rw). so when you have three pickups and one of them is rwrp there are two pickups which won't stick together - then the other one is rwrp.
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Post by UnklMickey on May 12, 2006 9:25:55 GMT -5
Falke,
i'm laughing right now, cause i almost said:
"Falke's got it right, and it's a very simple thing to do. let me just clarify, if one is RWRP they'll stick together face-to-face.
if they are both normal, or both RWRP they'll stick together front-to-back."
but then i noticed we both missed the fact that he wants to know the polarity of the pups that are mounted in the guitar!
so that means he'd have to take at least one of them out.
not quite as simple as a couple laying loose.
take a magnet or a spare pickup. allow it to stick to the pole-pieces of one of your pickups. it will only want to stick in one orientation.
now allow it to stick to another pickup.
if the same side of the magnet sticks to the the pole-pieces, the pups are both normal or both rwrp.
if it flips, one is normal, one is rwrp.
oh, and BTW, welcome to Guitarnuts 2 !
unk
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Post by JohnH on May 12, 2006 16:16:45 GMT -5
I find that a fridge magnet is a very useful tool as a polarity tester. Nice and thin so it slips under the strings. If it sticks to one pup and not another, then the polarities are different.
If you have an analogue multimeter, with a needle, a better technique is a 'screwdriver pull off test'
Plug in a guitar cord connect the meter, on its most sensitive voltage setting, to the end of the cord, between tip and sleeve of the jack plug Set volume and tone controls at max Select one pickup place the tip of a screwdriver on a pole piece and pull it up, the needle will jump to the left or the right Repeat for other pups If two pups jump one way and the third jumps the other, then you have a reverse wound reverse polarity pup, as is usually provided on the middle pup of a Strat
My Strat copy, by Hondo, also had just a 3 position switch. It turned out that the bridge pup was RWRP, but for no useful reason with the switching that it had. It could have been just a fluke. When I rewired it, the bridge pup moved to the middle.
Remember...
"A jump to the left....... A jump to the right...... Lets do the time warp again..."
John
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Post by UnklMickey on May 12, 2006 16:26:13 GMT -5
If you have an analogue multimeter, with a needle, a better technique is a 'screwdriver pull off test' i tried the pull-off test with one of my $3.95 digital meters from Harbor Freight. works just fine. but, with my with my 4 1/2 digit Fluke 8060a, not so good. too slow, too much averaging. and before anyone asks: no, i won't trade my Fluke for a crate full of those cheapies. just use the right tool for the particular application.
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