PSN-L Email List Message

Subject: Re: Pondering 2 stacked ring magnets = round coils
From: Brett Nordgren Brett3mr@.............
Date: Mon, 02 Jun 2008 12:44:35 -0400


Would it possibly work better if the ring magnets were oriented N-S - S-N?


At 10:00 AM 6/2/2008 -0600, you wrote:
>Hi all,
>Hmmm, here is a new/old speaker/voice coil speculation idea, which I don't 
>think has been covered before in PSN email.
>It "assumes" you have a round coil that does reasonably fit the inside 
>diameter of a, and/or, a pair of round ring neodymium magnets;
>and; ~ the total thickness of the neodymium magnets is at least greater 
>than the thickness of  the coil itself.
>You take 2 round ring magnets and simply co-join them N-S-N-S.  The field 
>where they co-join (S-N) will be quite
>intense, and is where the movement of the coil will be most 
>sensitive.  This is the only real change/addition.


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