Alpine Type E 12 (check my work?)

[Jmabrao 10+ year member]

Hey guys I'm designing a box for one of my buddies who has a alpine type e 12, Alpine says optimum vented enclosure is 1.25 tuned to 34 hz I believe I got it pretty close. Would you guys be able to let me know if I made and large errors?

Thank you all for your timeView attachment 26518910View attachment 26518911View attachment 26518912

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