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# Re: Speaker with coil model?

- To: femm@yahoogroups.com
- Subject: Re: Speaker with coil model?
- From: "alanbabb" <alan@babbspeakers.com>
- Date: Mon, 09 Sep 2002 21:51:33 -0000
- In-reply-to: <3D7BE182.7040707@ieee.org>
- User-agent: eGroups-EW/0.82

    This is an interesting model.

    How do you decide on the area to integrate to get the force? I have
    always assumed that the force is generated by the resultant field of
    the ac coil and the dc magnetic structure and this suggests to me
    that the force is generated over a broader area than that of just the
    physical space occupied by the coil.

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