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RE: Field coil vs permanent magnet -Fundamental differences besides the obvious?

Well, John, I would think a true audio professional, a full time speaker designer, would actually measure something like the lip on a LeCleach horn, to find out what exactly the effect of the lip was, and not just be "inclined" to follow one's prejudices. Then one might find out what the diffraction issues really amount to in the real world. But you'd have to do the work, which you don't seem "inclined" to do. Do you need that anechoic chamber to do it?

As for the "current state of the art" on drivers, I do try and keep up, and my listening to such drivers informs my previous comments. There are no modern fullrange field coil drivers that are anything even remotely as good sounding as the vintage models with which I am familiar. If contemporary designers actually understood what was done in the past, they would obviously stand a much better chance of making a good sounding driver today. But, as you say, they are all so exhausted from a hard day's work designing permanent magnet speakers, that inspiration is hard to come by.

Thanks for clarifying that.

Jonathan


Edits: 07/21/09
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