Could I squeeze a 2pi into this cabinet?


Could I use a prefab parts express cabinet of 22 X 13.5 X 9 for a 2 pi by adjusting the port size? If so, can someone who understands the Helmholz formula better than this mathematical illiterate help me out on this one?
(I've got a router, but not a table saw, and I am having little luck finding anyone who will custom cut the wood in my area.)
Thanks
Jeff


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