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The Cantilever Sandwich Loudspeaker Diaphragm

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A new diaphragm has been devised, in the form of two short, wide cantilevers, back to back. The voice coil is a flat elongated spiral. By using sandwich construction, the diaphragm resonance should be very high in frequency, giving freedom from breakup over the entire working range and beyond. An improved bellows surround and cabinet are also discussed.

JAES Volume 33 Issue 5 pp. 351-354; May 1985
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AES - Audio Engineering Society