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Approximately 30 years have passed since Tetsuo Nagaoka promoted pipe
resonator loudspeaker systems. His works were single pipe
resonator system using powerful fullrange drivers. Many amatuer
speaker craft freaks supported his systems as high fidelity audio
systems. I propesed single pipe resonator with holes in 2004. Idea of this resonator is to add some more resonant frequencies. Some more information is in Japanese page. This application brought reasonble effect. |
Pipe |
Resonant Frequencies[Hz] |
Note |
Pipe length = L1 | c/4L1, 3c/4L1,
5c/4L1, ... |
There are theoretically
unlimited resonant frequencies. |
Pipe length = L2 | c/4L2, 3c/4L2, 5c/4L2, ... | There are theoretically unlimited resonant frequencies. |
Pipe length = L3 | c/4L3, 3c/4L3, 5c/4L3, ... | There are theoretically unlimited resonant frequencies. |
Pipe length = L4 | c/4L4, 3c/4L4, 5c/4L4, ... | There are theoretically unlimited resonant frequencies. |