Port length compared to wavelength of tuning freq

Longer port is bigger and at the same time the better the efficiency.
The bigger the port, the smaller part of the chamber's air mass changes
and the air movement in the port is shorter and slower, where less
energy is lost. Of course, at some point the phase shift of the port
will affect more negatively. At a lower frequency, the wavelength is longer
so the port can be longer too.
As a rule, a longer port gives better peak sensitivity

and a shorter port a wider bandwidth.

For peaky box I might go as high as 10-15% and typical daily boxes are usually around 5%

translated by google translator :D

Lahjoittamalla tuet ja motivoit sivuston kehittämistä!