How to Calculate volume of enclosure for a mid-range driver?

[kevinlin1013]

I know it is able to calculate the volume of the bass driver from its T/S parameters. Closed or Vented.

How about the mid-range driver if I cross it at 250Hz(High-Pass) in a closed box?

Or it is not so important because it just deal with the frequency above 250Hz?

Thanks!

[chris661]

As long as there's no bump in the frequency range you'll use the speaker in (or just outside), then you should be fine.

[David_Web]

I usually design it to always have a rising excursion at lower frequencies, so no hump in the excursion graph. Preferably smooth in appearance.
I also like total Q to be lower than 0.5

[PeteMcK]

you can model this in Unibox, it is important because it affects the fall-off rate & this interacts with your crossover slope. However it's not critical unless the box is too small, when you start to get an LF hump.
For me, the internal damping & shape of the rear wall are just as important, to avoid internal reflections