How do I know what this box is tuned to?

[DToretto555]

I might be getting a couple subs soon, and my good friend has a box I can have. Nether of us know its volume or what its tuned to, so is there a website I can determine what the port is tuned to and how much volume the box has?

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[Sn0rKy 10+ year member]

use like winisd

and put in the dimensions n port dimensions or volume or them n itll say

 

[squeak9798 5,000+ posts]

Remember that for the internal volume, you'll need to subtract the port's displacement and sub's displacement from the gross internal volume. Also, if you are measuring the outside of the box, don't forget to subtract out the thickness of the wood.