Mike Feldman wrote:
Larger hole == higher resonance; smaller hole == lower resonance
frequency.
Diffraction effects might have more influence on HF performance -- dunno.
Mike, I don't have the equations in front of me but, IIRC,
the resonant frequency is a convex function of port
diameter. i.e. there is a diameter at which it is minimum
and going either larger or smaller makes it higher. Or
perhaps there is a maximum and going either way makes it
lower. Anybody know the equation?
Bob
--
"Things should be described as simply as possible, but no
simpler."
A. Einstein
