I wonder if, like Yamaha, they spray the beryllium onto a copper 'former' then melt off the copper. Resulting in a diaphragm 'that's lighter than a butterflys' wing' and very stiff.
Senior Member
Location: Bristol, since 1978. Current house since 1996!
Posts: 950
I'm Chris.
I wonder if, like Yamaha, they spray the beryllium onto a copper 'former' then melt off the copper. Resulting in a diaphragm 'that's lighter than a butterflys' wing' and very stiff.
Chris.
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