Maximizing Performance from Loudspeaker Ports

Salvatti A, Button D, Devantier A. Maximizing Performance from Loudspeaker Ports. In: AES Convention 105. Audio Engineering Society; 1998. Paper 4855. Available from: https://aes.org/publications/elibrary-page/?id=8325

@inproceedings{Salvatti1998_8325,
  author = {Salvatti, Alex and Button, Doug and Devantier, Alan},
  title = {{Maximizing Performance from Loudspeaker Ports}},
  booktitle = {AES Convention 105},
  note = {Paper 4855},
  year = {1998},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=8325}
}

TY  - CPAPER
TI  - Maximizing Performance from Loudspeaker Ports
AU  - Salvatti, Alex
AU  - Button, Doug
AU  - Devantier, Alan
T2  - AES Convention 105
M1  - Paper 4855
PY  - 1998
DA  - 1998/09/06
UR  - https://aes.org/publications/elibrary-page/?id=8325
PB  - Audio Engineering Society
LA  - en
AB  - There is a current trend in the marketplace for loudspeaker ports to have a more aerodynamic appearance. This may be as much for appearance as for performance reasons. However, the sharp discontinuity at the end of a traditional port does create turbulence at high drive levels as air is drawn into the port. As well, the axial cross-sectional shape of the port can have an influence on the turbulence generated on the air as it exits the port. Ports altered to provide a more aerodynamic shape to minimize turbulence for inlet and exit air streams show performance improvements in efficiency, compression, maximum output and distortion reduction and will be outlined in this paper. The ideal shapes for high velocity inlet and exit air streams are different and the best solution is one that balances both. Additionally, turbulence is actually preferred in matters of cooling the box through heat exchange via the air in the port.
ER  -