Can anyone tell what this box is tuned to and how many cubes it is

[tRiGgEr 5,000+ posts]

Guys, can you explain to me how this is figured out.
Is it wxhxd then divide it by what number? 1728?

and how do you figure out displacement?

Box Internal L x W x H = ? then Divide by 1728 to get cubic feet.

Port L x (W+.75) x H = ?

Subtract the port area from the box area.

Then subtract your speakers displacement. Which can be found in the manual.