The Resonances of Loudspeaker Diaphragms

Barlow DA, Galletly GD, Mistry J. The Resonances of Loudspeaker Diaphragms. J Audio Eng Soc. 1981;29(10):699-704. Available from: https://aes.org/publications/elibrary-page/?id=3884

@article{Barlow1981_3884,
  author = {Barlow, Donald A. and Galletly, G. D. and Mistry, J.},
  title = {{The Resonances of Loudspeaker Diaphragms}},
  journal = {Journal of the Audio Engineering Society},
  volume = {29},
  number = {10},
  pages = {699--704},
  year = {1981},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=3884}
}

TY  - JOUR
TI  - The Resonances of Loudspeaker Diaphragms
AU  - Barlow, Donald A.
AU  - Galletly, G. D.
AU  - Mistry, J.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 29
IS  - 10
SP  - 699
EP  - 704
PY  - 1981
DA  - 1981/10/06
UR  - https://aes.org/publications/elibrary-page/?id=3884
PB  - Audio Engineering Society
LA  - en
AB  - The resonance frequencies of several shapes of loudspeaker diaphragms have been calculated using BOSOR 4 (based on the variational finite difference technique) and a finite-element program. Calculations for a typical paper cone confirm that resonances are present over the whole frequency range, the lowest one being subsonic. The effect of altering the cone profile is to raise some frequencies and lower others. It is confirmed that sandwich construction can increase the dynamic bending stiffness by as much as several thousand times. Calculations on dome diaphragms suggest that with suitable design, there is a region where all resonances can be placed below or above the working range. The presence of a previously unsuspected torsional resonance is revealed by the method of calculation used. This resonance will hardly affect the frequency response and will be undetectable by holography, although it may affect the transient response. The method of calculation also enables buckling loads to be determined, so that it may be possible to calculate the onset of subharmonics.
ER  -