Loudspeaker magnet material

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Ampdog

R.I.P. 23 June 2022
Joined
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Hi All,

My Googling skills letting me down yet again (perhaps try again next year only....)

This concerns a post (quoted here from elsewhere, I think) where someone referred to a previous post in that source, stating reasons why ferrite is only good for fridge magnets (compared to metallic magnetic material, as far as I can recall). I also vaguely recall that the argument had to do with the electrical conductivity of the magnetic material (??)

I will appreciate a reference to this if someone can recall, or to any post or report comparing metal to ceramic magnets in loudspeakers. I Googled around 'loudspeakers', 'ceramic' and 'magnets' but got nowhere.

Thanks
 

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