AKG D12 Repair
« on: June 23, 2018, 10:49:14 AM »
I got this D12 50-250 mic on ebay (for very cheap) in a non working condition.
When I took a look inside the mic it seems like someone has messed up with the capsule (all the wires was detached and the diaphragm's coil was missing...) Since I've got nothing to lose I'm thinking to try to re-winding the coil.
I can borrow a coil winding machine from a friend for this project.
What i don't know is:
* The thickness of the coil (in gauge)?
* The coile resistance I should receive after winding the coil?
* What type of glue should be used to attached the coil to the membrane?

The membrane:

Parts from the original coil:

The motor:


Re: AKG D12 Repair
« Reply #1 on: June 24, 2018, 06:38:38 AM »
I'm sorry I can't help. How do you plan to do the coil? What kind of form you will use?
I have been thinking about this for a while. I have no idea how it is done, and I would like to know. The problem is that you have some risk of glue the coil to the form when you apply the varnish or cynoacrilate. I have been thinking in some solutions. Wind over wax paper or use a core made of candy and then disolve it in hot water.

You were able to measure the thickness of the wire?
heavy metal is the law!!!


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