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.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=11637
(1455KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
