Wayne Parham Messages: 18792 Registered: January 2001
Illuminati (33rd Degree)
There are indeed a few things to consider here - One is the Helmholtz frequency and another is the Q of the resonator, which is determined by its ratio of reactance to resistance. There is also the issue of port airspeed, which matters if turbulance causes audible artifacts. So vent area is indeed one of the important factors to consider.