box recommendations for 2 type x's?

[hockeytoker 10+ year member]

i think im buying to alpine type x's 12". the biggest the boxx could be is 16" 35" 20" (H)(W)(D). but i can get 2 cubes per sub outta 16" 35" 16" (H)(W)(D) i think. i want it tuned to 32 hz. so how many sq" should the port be an how wide should it be?

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