4ft^3 tuned to 30hz? how do I do that?

[rez0469]

I ordered my 15 xxx and I need a box that is 4ft^3 tuned @ 30hz and I have no idea how to build a ported box so I was wondering if someone could help me out on how to figure this out.

[kingpin_jeffie]

http://www.linearteam.dk/

read, learn, download winisd pro

then ask more questions becuase itll confuse the **** outta you