Plur

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Gold ribbon Cocepts in the 80's used a somwhat similatar though - vertical oriented magnets left and right in front and behind the ribbon. Their real innovation was to use vapor deposition of gold on a Kevlar membrane to get the impedance high - very thin coating. 4 ohms over 8 feet of ribbon conductor.
 
Gold ribbon Cocepts in the 80's used a somwhat similatar though - vertical oriented magnets left and right in front and behind the ribbon. Their real innovation was to use vapor deposition of gold on a Kevlar membrane to get the impedance high - very thin coating. 4 ohms over 8 feet of ribbon conductor.

if you can find a picture that would be appreciated.
 
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