In the loudspeaker diaphragm described in this paper, acrylic foam is used for the core and carbon fiber for the skin material, to achieve more rigidity, lower density, easier formability and a higher Young's modulus. Unlike a honeycomb construction, this diaphragm material is relatively easy to form into a curved cone shape. The new diaphragm is at least 300 times more resistant to bending than a paper diaphragm, while nearly equal to paper in internal loss characteristics. The importance of diaphragm rigidity is confirmed by modal analysis and tone-burst tests.

Authors: Taguchi, Sadao; Watanabe, toshio; Takahashi, Eiichi; Takahashi, Susumu; Tanaka, Susumu
Affiliation: Sansui Electric Company, Ltd., Tokyo, Japan
AES Convention: 76 (October 1984) Paper Number: 2117
Publication Date: October 1, 1984 Import into BibTeX
Subject: Transducers
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=11637

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