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Old 26th Mar 2019, 7:34 pm   #572
Electronpusher0
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Join Date: Jun 2016
Location: Bognor Regis, West Sussex, UK.
Posts: 2,288
Default Re: Audiophoolery?

Quote:
Originally Posted by Herald1360 View Post


Well it is possible to use a Helium cooled MRI magnet system as a loudspeaker- as demonstrated historically in Magnet Test at Oxford Magnet Technology around Christmas to play a few carols a good few years back.
I confess that I did know that, I used to work as technical trainer in IGE Medical Systems training school at Slough. Having access to X-Ray and MRI equipment to play with was good fun.
The noises from an MRI scanner come from magnetostriction from the large currents in the gradient coils. I was thinking more of placing a (large) voice coil in the bore of the magnet attached to a very large diaphragm.

Peter
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