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A. Salvatti, A. Devantier, and DO. J.. Button, "Maximizing Performance from Loudspeaker Ports," J. Audio Eng. Soc., vol. 50, no. 1/2, pp. 19-45, (2002 January/February.). doi: A. Salvatti, A. Devantier, and DO. J.. Button, "Maximizing Performance from Loudspeaker Ports," J. Audio Eng. Soc., vol. 50 Issue 1/2 pp. 19-45, (2002 January/February.). doi:
Abstract: There is a current trend in the marketplace for loudspeaker ports to have a more aerodynamic appearance. While this may be as much for appearance as for performance reasons, the sharp discontinuity at the end of a traditional port does create turbulence which negatively affects most performance parameters. Ports altered to provide a more aerodynamic shape to minimize turbulence for both the inlet and the exit air streams show performance improvements in efficiency, acoustic compression, maximum output, and distortion reduction. The ideal port shapes for high-velocity inlet and exit air streams are different, and the best solution is one that balances both. In addition turbulence is actually preferred in matters of cooling the box through heat exchange via the air in the port.

@article{salvatti2002maximizing,
author={salvatti, alex and devantier, allan and button, douglas j.},
journal={journal of the audio engineering society},
title={maximizing performance from loudspeaker ports},
year={2002},
volume={50},
number={1/2},
pages={19-45},
doi={},
month={january/february},} @article{salvatti2002maximizing,
author={salvatti, alex and devantier, allan and button, douglas j.},
journal={journal of the audio engineering society},
title={maximizing performance from loudspeaker ports},
year={2002},
volume={50},
number={1/2},
pages={19-45},
doi={},
month={january/february},
abstract={there is a current trend in the marketplace for loudspeaker ports to have a more aerodynamic appearance. while this may be as much for appearance as for performance reasons, the sharp discontinuity at the end of a traditional port does create turbulence which negatively affects most performance parameters. ports altered to provide a more aerodynamic shape to minimize turbulence for both the inlet and the exit air streams show performance improvements in efficiency, acoustic compression, maximum output, and distortion reduction. the ideal port shapes for high-velocity inlet and exit air streams are different, and the best solution is one that balances both. in addition turbulence is actually preferred in matters of cooling the box through heat exchange via the air in the port.},}

TY - paper
TI - Maximizing Performance from Loudspeaker Ports
SP - 19 EP - 45
AU - Salvatti, Alex
AU - Devantier, Allan
AU - Button, Douglas J.
PY - 2002
JO - Journal of the Audio Engineering Society
IS - 1/2
VO - 50
VL - 50
Y1 - January/February 2002 TY - paper
TI - Maximizing Performance from Loudspeaker Ports
SP - 19 EP - 45
AU - Salvatti, Alex
AU - Devantier, Allan
AU - Button, Douglas J.
PY - 2002
JO - Journal of the Audio Engineering Society
IS - 1/2
VO - 50
VL - 50
Y1 - January/February 2002
AB - There is a current trend in the marketplace for loudspeaker ports to have a more aerodynamic appearance. While this may be as much for appearance as for performance reasons, the sharp discontinuity at the end of a traditional port does create turbulence which negatively affects most performance parameters. Ports altered to provide a more aerodynamic shape to minimize turbulence for both the inlet and the exit air streams show performance improvements in efficiency, acoustic compression, maximum output, and distortion reduction. The ideal port shapes for high-velocity inlet and exit air streams are different, and the best solution is one that balances both. In addition turbulence is actually preferred in matters of cooling the box through heat exchange via the air in the port.