New Sub enclosure help needed

[RandomQuestions]

I have 2 12" punch subs that i am looking to make a custom fiberglass box for because the original is to clunky and take up alot of room. The models are p212s4 and i need to know the airspace needed for them to work properly and sound good. I looked online everywhere but its a bit confusing. Any advice would help. thanks

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[bbeljefe]

About 1 cube each sealed would be the best performance you'll get from them. I wouldn't port them because they won't handle much power tuned below ~38 Hz.