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This is very true. If you are interested in learning about Nd magnets, have a read of my May 2012 article for Front of House(FOH) a professional audio trade magazine. Its on page 32 of the following link:


Apologies for not being able to provide a direct link, it is one of those "virtual issue" magazine sites.

Neodymium-based magnets are very important for the solenoid motor structures used in many types of loudspeakers.

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