Showing posts with label geomag. Show all posts
Showing posts with label geomag. Show all posts

Sunday, 4 May 2008

The Geo Mag Pick-Up (updated)

After successfully rewinding a broken Fender Jaguar Pick-Up, I decided to make one from scratch.
A pick-up kit, complete with bobbins, magnets, wire and polepieces just seemed to easy so I started to look around the house for supplies.
I found a bunch of these Geo Mag poles:



...and cut of the plastic:


There are two, extremely powerfull, Neodynium magnets on each pole. The one closest to the strings must be removed. When removed, the magnetic power on the "string-end" closely resembles standard Alnico magnets used for pick-ups.


I stripped 6 Geo Mag poles and attached them to a standard size bobbin, made from some very sturdy cardboard. I insulate the poles with tape to protect the coil wire from corrosion:



UPDATE:
I finished winding and ended up with 5000 turns and a resistance of 5,8 kohm. The coil wire was a bit loose so I gave the whole thing a nice dip in a mixture of 80% candle wax and 20% beeswax, heated to a temperature of about 60 degrees Celcius in a double boiler. I'm no expert, but there are plenty of tutorials out there on Pickup potting.
My boiler looks a little primitive, but it turned out fine. The coil wire is firm.



I installed the pickup in neck position and tested it through a PocketPod. At first it sounded pretty standard: Clear bell-like sound and so on. Then I noticed that the bassy notes has got a very distinctive snappy-sound to them. Also the pickup is almost noiseless, which I didn't expect :-)
All in all it's a decent pick-up with a unique sound and a lot of fun to make. The next one will be a bass model.