formula to find box size

[yo0123yo 10+ year member]

if u know the width, height and lenth of a box, how do you find the cu ft and tuning of it, thanks

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[bjfish11 5,000+ posts]

take the internal length x width x height and divide by 1728 to give you gross volume. Then you need to subtract port displacement. Which is basically the volume of the port.

 

[Trey803 5,000+ posts]

What does dividing by 1728 count for? Ive heard to always do this but why??

 

[bjfish11 5,000+ posts]

thats how many square inches there are in a cubic foot.

12" x12" x12" = 1728 cubic inches

 

[Trey803 5,000+ posts]

ahh stupid me!!

 

[bjfish11 5,000+ posts]

o well, now you know!