Air-Core Moving Coil Cartridge Coils vs. Coils with permeable Cores

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I am looking for informations concerning atvantages (benefits) and disadvantages between air (non-permeable) coil and coils with the so called permeable cores.
The only differences I know is the different output voltages and thus individual gain requirements by the choice of the RIAA head amp (phono preamp).
Thanks for more advices, especially concerning the different sonic charakter.
Some URLs in this case:
Air-Core MC cartridge coils - Vinyl Engine
Denon DL-S1, DL-304, and preamp considerations
AudiogoN Forums: Who needs a MM cartridge type when we have MC?
RE: Theory Behind De-Magnatizing A Cartridge - Tre' - Vinyl Asylum
Audio Asylum Thread Printer
 
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Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.