Talk:Moving iron speaker

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[edit] To Do

  • Wiki categories
  • Pictures, or links would be a start
  • Diagrams of mechanisms
  • link from other related articles
  • Recordings of music on single ended, balanced armature and inductor dynamic speakers, and a bleeper reproducing speech.

Tabby (talk) 23:44, 19 November 2007 (UTC)

I like the article in many respects, considering it's just begun. However, adopting my persona as an Average Reader, I have some questions. Just how does the moving iron get forced to move? Isn't it just a variation on the magnetic force causing a coil attached to a cone of some sort to move? Why are they confined to cheaper usaes today? Is it only the low quality? And it seems that whatever the motive technique, cannot the various ways of loading it acoustically be equally applied, lower quality higher distortion aside? If the article addressed these issues, I would have a clearer idea in mind of where this design approach fits in the range from piezo through voice coil to Heil to electrostatic. ww (talk) 22:12, 20 November 2007 (UTC)


I'll answer these here for now, as I'm semi-busy atm. I'm pretty sure you know the answers, judging by your observations on acoustic loading, but this will answer the qs for others for now.

"Just how does the moving iron get forced to move? Isn't it just a variation on the magnetic force causing a coil attached to a cone of some sort to move?"

thats how moving coil works, this is moving iron. The coil is wound round a stationary magnet, which pulls varyingly on the iron moving piece, which is held a little distance away from the magnet using a spring.

"Why are they confined to cheaper usaes today? Is it only the low quality?"

low cost and low quality

"And it seems that whatever the motive technique, cannot the various ways of loading it acoustically be equally applied, lower quality higher distortion aside?"

absolutely. However in practice certain types are in wide use, others were formerly, and some acoustic loadings are more or less never seen. Tabby (talk) 08:56, 10 January 2008 (UTC)