[Customsound79]

If a box is built for sub A at volume A and tuned to Ahz, is that box tuned to the same frequncy if you install sub B, C, or D regardless of T/S params of the sub you install?

 

[BlackFx4InTn]

It depends on the displacement of the sub. The displacement for my 12" sub is .21cuft. Most other subs range from .12-.25 or higher. This could raise or lower tuning but I seriously doubt you would be able to hear and audible difference since the difference is negligible.

 

[sqshoestring]

Issue is if another sub has a much different response then you might want to tune the box differently to compensate.