PSN-L Email List Message

Subject: alternate transducer magnet
From: sean@...........
Date: Wed, 9 May 2001 13:19:37 -0500 (CDT)

In regard to Casey's suggestion about an alternate magnet,
"this type of magnet" is not the exact magnet required for the
transducer design (all the dimensions are different), and I would 
certainly doubt if it is a bonded Neodymium rare earth magnet at 
that price. McMaster and other catalogues I have do show a wide 
selection of large ceramic ring magnets (as used in speakers) 
in the large dimensions mentioned and price range. The bonded Neo
magnets have about 4 times the specific coercivity of ceramic.



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Larry Cochrane <cochrane@..............>