Comparative Static and Dynamic FEA Analysis of Single and Dual Voice Coil Midrange Transducers

Kochendörfer F, Voishvillo A. Comparative Static and Dynamic FEA Analysis of Single and Dual Voice Coil Midrange Transducers. In: AES Convention 139. Audio Engineering Society; 2015. Paper 9414. Available from: https://aes.org/publications/elibrary-page/?id=17971

@inproceedings{Kochendorfer2015_17971,
  author = {Kochendörfer, Felix and Voishvillo, Alexander},
  title = {{Comparative Static and Dynamic FEA Analysis of Single and Dual Voice Coil Midrange Transducers}},
  booktitle = {AES Convention 139},
  note = {Paper 9414},
  year = {2015},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17971}
}

TY  - CPAPER
TI  - Comparative Static and Dynamic FEA Analysis of Single and Dual Voice Coil Midrange Transducers
AU  - Kochendörfer, Felix
AU  - Voishvillo, Alexander
T2  - AES Convention 139
M1  - Paper 9414
PY  - 2015
DA  - 2015/10/06
UR  - https://aes.org/publications/elibrary-page/?id=17971
PB  - Audio Engineering Society
LA  - en
AB  - The concept of the dual coil direct-radiating loudspeakers have been known for several decades. JBL Professional pioneered in design and application of dual coil woofers and midrange loudspeakers. There are several properties of the dual coil transducers that differentiate them from the traditional single voice coil design. First is the better heat dissipation—the dual coil may be considered as a traditional coil slit in two parts and each one is positioned into its own magnetic gap. Second is the symmetry of the force factor (Bl product) versus position of the voice coils in their gaps. It is explained by the fact that one coil leaves its gap the other one on contrary enters its gap. These two features are well researched and described in literature [1,2]. Less is known about advantage of the dual coil transducers related to the flux modulation and dependence of the alternating magnetic flux (and corresponding voice coil inductance) on frequency, current, and voice coil positions. In this work comparison of a regular single coil design and dual coil configuration is carried out through dynamic magnetic FEA modeling and measurements.
ER  -