Could you make a "field coil" phono cartdridge?

Hola,

I was reading about field coil speaker elements, where the "magnet" for the speaker is created by an active electrical supply rather than by using fixed magnets.

Well, that got me to thinking, could you do the same thing for a phono cartridge?

I know you'd need a couple extra runs of wire through the tonearm, but like with a strain gauge, by eliminating a fixed magnet and its mass, you might gain in the process.

I can't find anything about whether or not this have ever been attempted.

Anybody know enough about this sort of thing?

Audiophile, with Occasional Music

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<i>(all you ever have to know about life is that little girls are taught to dance and little boys are taught to kick it's all over from there my son is going to get <a href="http://www.poetrymagazines.org.uk/magazine/record.asp?id=6193">a whole bunch of garbage</a> for his birthday and i'll say here boy play music)</i><br>
&#151lines from an old poem, "the green water rocks / make me cry," by me

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