Optimum Diaphragm and Waveguide Geometry for Coincident source Drive Units

Dodd M. Optimum Diaphragm and Waveguide Geometry for Coincident source Drive Units. In: AES Convention 121. Audio Engineering Society; 2006. Paper 6886. Available from: https://aes.org/publications/elibrary-page/?id=13720

@inproceedings{Dodd2006_13720,
  author = {Dodd, Mark},
  title = {{Optimum Diaphragm and Waveguide Geometry for Coincident source Drive Units}},
  booktitle = {AES Convention 121},
  note = {Paper 6886},
  year = {2006},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13720}
}

TY  - CPAPER
TI  - Optimum Diaphragm and Waveguide Geometry for Coincident source Drive Units
AU  - Dodd, Mark
T2  - AES Convention 121
M1  - Paper 6886
PY  - 2006
DA  - 2006/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13720
PB  - Audio Engineering Society
LA  - en
AB  - Coincident source loudspeakers avoid the response and directivity irregularities seen with conventional spaced drivers in the crossover region. Earlier work has shown that by placing the high frequency driver at the apex of the low frequency diaphragm the directivity of both drivers may be regularized at the crossover frequency. This paper describes the application of finite element and boundary element methods to explore how some simple sources interact with various boundary conditions. A novel geometry giving much-improved bandwidth and directivity is introduced. Simulated results of an idealized high frequency driver using this geometry are compared to those of an idealized direct radiating dome. The implementation of the new design using this novel structure is discussed and measured results from the complete design are presented.
ER  -