The Use of Magnetic Fluids in Loudspeaker Design

King J. The Use of Magnetic Fluids in Loudspeaker Design. In: AES Convention 57. Audio Engineering Society; 1977.pp. 1246:1-26. Available from: https://aes.org/publications/elibrary-page/?id=3109

@inproceedings{King1977_3109,
  author = {King, John},
  title = {{The Use of Magnetic Fluids in Loudspeaker Design}},
  booktitle = {AES Convention 57},
  pages = {1246:1-26},
  url = {https://aes.org/publications/elibrary-page/?id=3109},
  year = {1977},
  month = may,
  publisher = {Audio Engineering Society}
}

TY  - CPAPER
TI  - The Use of Magnetic Fluids in Loudspeaker Design
AU  - King, John
T2  - AES Convention 57
SP  - 1
EP  - 26
M1  - Paper 1246
PY  - 1977
DA  - 1977/05/06
UR  - https://aes.org/publications/elibrary-page/?id=3109
PB  - Audio Engineering Society
LA  - en
AB  - Ferro-magnetic fluids can be used in the design of moving coil loudspeakers to increase the damping on the moving system, and in some cases to increase the electrical power dissipation capability of the voice coil. The magnetic fluid is contained within the annular voice coil air gap by the speakers magnetic field and thus envelops the portions of the voice coil within the air gap. The fluid shearing stree results in a viscous damping force on the moving system. The fluid also provides an improved heat sink for the voice coil which may increase the thermal power rating of the speaker.
ER  -