The Acoustic Design of Minimum Diffraction Coaxial Loudspeakers with Integrated Waveguides

Mäkivirta A, Väisänen J, Martikainen I, Lund T, Naghian S. The Acoustic Design of Minimum Diffraction Coaxial Loudspeakers with Integrated Waveguides. In: AES Convention 142. Audio Engineering Society; 2017. Paper 9695. Available from: https://aes.org/publications/elibrary-page/?id=18573

@inproceedings{Makivirta2017_18573,
  author = {Mäkivirta, Aki and Väisänen, Jussi and Martikainen, Ilpo and Lund, Thomas and Naghian, Siamäk},
  title = {{The Acoustic Design of Minimum Diffraction Coaxial Loudspeakers with Integrated Waveguides}},
  booktitle = {AES Convention 142},
  note = {Paper 9695},
  year = {2017},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18573}
}

TY  - CPAPER
TI  - The Acoustic Design of Minimum Diffraction Coaxial Loudspeakers with Integrated Waveguides
AU  - Mäkivirta, Aki
AU  - Väisänen, Jussi
AU  - Martikainen, Ilpo
AU  - Lund, Thomas
AU  - Naghian, Siamäk
T2  - AES Convention 142
M1  - Paper 9695
PY  - 2017
DA  - 2017/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18573
PB  - Audio Engineering Society
LA  - en
AB  - Complementary to precision microphones, creating an ideal point source monitoring speaker has long been considered the holy grail of loudspeaker design. Coaxial transducers unfortunately typically come with several design compromises, such as adding intermodulation distortion, giving rise to various sources of diffraction, and resulting in somewhat restricted maximum output performance or frequency response. In this paper we review the history of coaxial transducer design, considerations for an ideal point source loudspeaker, discuss the performance of a minimum diffraction coaxial loudspeaker and describe novel designs where the bottlenecks of conventional coaxial transducers have been eliminated. In these, the coaxial element also forms an integral part of a compact, continuous waveguide, thereby further facilitating smooth off-axis dispersion.
ER  -