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Top Document: alt.guitar.rickenbacker Frequently Asked Questions Previous Document: 5.9 Oil finishes too? Next Document: 5.11 What are the types of magnets used in the different kinds of pickups? See reader questions & answers on this topic! - Help others by sharing your knowledge
You might like the difference it makes, but Rickenbacker put quite a bit
of effort into into the design of these pickups. Here's what John Hall
has to say about it:
"The modern reissues measure about 11.2K with a lab grade ohmmeter.
As I said before, you'll find genuine vintage pickups which have a
variety of specs . . . sometimes as high as 16K and as low as 7K ohms
DC resistance. The modern one is indeed a compromise between output
and a particular type of sound, but not any greater of a compromise
than many of the original, unspecified or less-than-consistent units.
During the vintage pickup "redesign" phase, we tested close to 100
pickups from a variety of parameters and the current product is
essentially an average or composite of all these units. But beyond
this, we even looked through all of our old production and purchasing
records to make sure we are using materials of the genuine specs.
I can tell you that again that nothing other than #44 wire has been
purchased, although several different insulation materials and other
wire coatings have been used through the years."
[John Hall, ceo@rickenbacker.com, 7/10/1998]
Here is the unwinding procedure, as given by Ted Breaux:
Ric Pickup Unwinding Procedure
Materials Needed:
small soldering iron
electrical tape
small flat-head screwdriver
Phillips-head scredriver
Ohmmeter
2-hours and maybe a beer
towel
cigarette lighter
1) Lay the instrument on a soft, supportive surface, and loosen strings.
Remove small bidge cover plate so that strings can be moved to side of
bidge.
2) Using the Phillps screwdriver, remove the top pickguard section, being
careful not to lose the small rubber grommets which are under the
screws.
3) Carefully unscrew the center screw on each side of the bridge pickup.
When these become loose, carefully remove the small rubber grommets
under the corner pickup screws. If one of these falls into the
'f'-hole, you'll be lucky to get it back.
4) Carefully pull the pickup away from the body of the guitar. Cupping the
pickup firmly in your hand, unscrew the corner pickup screws while
holding the nuts on the bottom side. Remove all four screws and nuts.
One screw holds the ground lug. Rest the backing plate on the guitar
body.
5) Using the small flat-head screwdriver, pry the pickup body from the
toaster cover. Carefully unwind the sticky electrical tape from the
pickup windings. Stick this in a hanging position somewhere, as you
will reuse it later.
6) On the bottom of the pickup body, you will see the magnet poles and two
terminals. If you measure the resistance between the two terminals, the
reading will likely be between 11.7-11.9k ohms. You will see the fine
coil wire pass in a slot in the plastic bobbin near the outermost
terminal. Don't worry about trying to unsolder it, just gently pull it
from the terminal, and it will easily pop off.
7) Now, holding the pickup in one hand such that the face of the pickup is
sideways, grip the little end of loose wire, and pull it away from the
face.
The first few times the wire will keep snapping off due to the glue, but
soon, you'll be pulling a long, silky stream of wire off the pickup.
Don't be bashful, you should be pulling off at least several windings
per stroke of the hand. Make about 200-250 hand strokes, then break the
wire.
8) Using the cigarette lighter, quickly burn the end of the wire. You'll
see a little piece melt off, but the new end will be free of insulation.
Carefully pinching the tiny end to one probe of your meter (with your
finger), touch the inside terminal on the pickup with the other probe
and measure the resistance. Make a mental note of this and continue
unwinding.
9) When you reach about 7.5k, break the tiny wire such that you can
carefully return it to its tiny channel near the edge terminal. Place
the pickup upside down on a towel. Place the tiny wire against the
solder bead on the terminal, and just touch the tiny wire against the
terminal with the soldering iron until the solder melts around the wire.
The hot tip of the soldering iron will melt the insulation off the tiny
wire, so don't be too concerned about that. Trim off any excess wire
to prevent a short due to a dangling end. Measure the resistance
between the two terminals to verify a good connection.
10) Carefully rewrap the factory electrical tape around the coil, and follow
with 2-3 turns of your electrical tape to compensate for the slightly
smaller coil size. Verify the connection again with the meter. Press
the pickup body back into the chrome top. It should fit snugly.
Carefully remount the pickup to the guitar body. Plug the guitar into
an amp and tap the pickup with a screwdriver to verify the connection.
If all is well, repeat for the remaining pickup(s). When you go to play
the guitar, I think you'll be pleasantly surprised. You'll notice that
it sounds virtually identical to the Ric guitars in the famous records
from the 60s.
[Ted A. Breaux, tabreaux@bellsouth.net, 7/8/1998]
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Last Update March 27 2014 @ 02:11 PM
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