How big is the box going to have to be?

[Americanstrat21 10+ year member]

How can I find the dimensions I need to make the box?? I am buying a Fi Q 18" sub and I am trying to find out the dimensions of a box that I need. Im not sure if I should make it sealed or ported, this is going to be used as a daily driver but i will be listening to it pretty loud..

Thanks!

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[mlstrass 5,000+ posts]

Usually you start with the space you have available and the recommended box size/tuning on the FI site...