Vented-box Geometry and Low Frequency Reproduction: The Aerodynamical Approach

Morkerken JP, Parzy B, Pellerin G, Polack JD. Vented-box Geometry and Low Frequency Reproduction: The Aerodynamical Approach. In: AES Convention 112. Audio Engineering Society; 2002. Paper 5522. Available from: https://aes.org/publications/elibrary-page/?id=11359

@inproceedings{Morkerken2002_11359,
  author = {Morkerken, Jean-Pierre and Parzy, Benjamin and Pellerin, Guillaume and Polack, Jean-Dominique},
  title = {{Vented-box Geometry and Low Frequency Reproduction: The Aerodynamical Approach}},
  booktitle = {AES Convention 112},
  note = {Paper 5522},
  year = {2002},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11359}
}

TY  - CPAPER
TI  - Vented-box Geometry and Low Frequency Reproduction: The Aerodynamical Approach
AU  - Morkerken, Jean-Pierre
AU  - Parzy, Benjamin
AU  - Pellerin, Guillaume
AU  - Polack, Jean-Dominique
T2  - AES Convention 112
M1  - Paper 5522
PY  - 2002
DA  - 2002/04/06
UR  - https://aes.org/publications/elibrary-page/?id=11359
PB  - Audio Engineering Society
LA  - en
AB  - To-day, low frequency reproduction with loudspeakers in vented box is limited by two factors: the volume of the box, and non-linear airflow through the vent. We propose a novel approach that takes into account aerodynamical parameters, leading to original profiles and an improved functioning of the vented box. For example, under certain alignment conditions, there exists a second cut-off frequency below the first one, localised on the lower impedance hump. Using this lower cut-off frequency and an adapted vent profile makes it possible to radiate frequencies around 40 Hz with box volumes smaller than 1 liter and small drivers. A prototype will be demonstrated.
ER  -