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October 2012

Remagnetizing Coils

I did not use my turntable on my sound system for some years, but the other day, I had the urge to rediscover some of my old vinyl discs.


To my dismay, there was no sound when I put on a disc. Troubleshooting led to the phono cartridge, an AKG P8ES.


I went online to see if any of these are still available, and at the same time came across some audio blogs describing the exact same problem being that these particular cartridges are moving magnet types and appear to be prone to losing their magnetism over a period of time. This does not occur with moving coil cartridges. Would anyone know of a way to remagnetize the coils in these types of cartridges?

#10126
David Asselin
St Lambert, Quebec, Canada



Answers

Chances are the magnets are OK on your stylus, the problem is most likely with the coil system in the cartridge body. The coils are not to be magnetized, their job is to generate a voltage from the mechanical movement of the magnets on the stylus shank when playing a record. My experience with the AKG P8 is that it does not age well, so rather than fight a losing battle I suggest replacing it with something new. I just purchased a Shure M97xe and I have no complaints.

Kevin Kaas, C.E. SPC-TV
Largo, FL