Talk:Moving iron speaker

To Do
Tabby (talk) 23:44, 19 November 2007 (UTC)
 * 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.
 * 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)

Moving Iron Headphones?
I come across lots of headphones, but to my knowledge, there are no current production headphones of any pedigree using moving iron transducers. The most recent moving iron transducers used for audio reproduction I've seen were 1970s era cheap earpieces, used as accessories for the transistor radios of those times. --Rocknrollsuicide (talk) 07:06, 13 February 2009 (UTC)

I dont think moving iron headphones would be described as pedigree. They tend to be found on low cost equipment. Tabby (talk) 17:43, 3 September 2011 (UTC)

Tag
it says: This article has multiple issues. This article may require cleanup to meet Wikipedia's quality standards. No cleanup reason has been specified.

Well, if someone can be more specific about what problems exist, maybe it will be cleaned up :) Tabby (talk) 19:44, 11 July 2012 (UTC)

Link
removed dead link: Tabby (talk) 01:04, 13 April 2013 (UTC)
 * 2"-3" diaphragm transducer and horn a very popular form of pre-war loudspeaker

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