I was working out the cutoff freq of an open back Guitar cab, when the following Q. occured to me: If you diminish the size of the opening on the back, when does that opening turn the cab into a helmholtz resonator? It's probably a 'how long is a piece of string' question, i.e. there's no sensible answer...???
I agree. With so many factors it's better to focus on those that are important and significant.
An open box can baffle to a lower frequency than a single panel of the same frontal size. It also allows the unit to be placed on a surface without falling over and provides a place for the amp and tone stack. Any helmholtz resonance is probably out of band and maybe irrelevant.
An open box can baffle to a lower frequency than a single panel of the same frontal size. It also allows the unit to be placed on a surface without falling over and provides a place for the amp and tone stack. Any helmholtz resonance is probably out of band and maybe irrelevant.