Box Shape

[Twexcom]

Hello.

When a mid bass woofer manufacturer states that the cabinet shape should be "Prism, square (optimal), what does that mean?

It is a 0.887 cubic foot box and I was wondering if it is ok for it to be a perfectly square cube with all sides equal?

The manufacturer stated the box volume to be 0.887 cubic feet, but they did not state dimensions. How do I figure out the dimensions?

 

[KEW]

I'm not sure how they are using prism in that statement.

Many notable sealed subwoofers (including the SVS SB13-Ultra) are cubes. Ported subs are often not cubes. I don't know if there is a significant reason for that.

If you take the cube root of .887, that will give you the inside dimension for each side (roughly 11-1/2"). You'll have to add length for thickness of the panels (so for 3/4" material, the exterior dimensions would be 13").

edit: I looked up prism square. I guess most of us think of a prism as having a triangular cross-section. A square prism has a square cross-section. The length of the prism is not controlled, only that the cross section is a square:
http://www.k6-geometric-shapes.com/square-prism.html

A cube is one type prism square and also is the shape that uses the least material to obtain a given volume.

 

[Twexcom]

Thank you.

The manufacturer replied and said that it is a cube.

 

[lsiberian]

The shape of a speaker box is normally not relevant to it's performance assuming it's well engineered. A Prism(3d rectangle) is not the most optimal shape, but building an optimal box is extremely hard.