help for the 9512's

Cahm Rohn
10+ year member

CarAudio.com Elite
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nc
I have 2 mtx 9512-44's and I want to build a new home for them and I want to know does this sound right. This would be my first build so im open for suggestions. So far I have 6.1 net 7.46 gross tuned to 35 hz with 101 sq in of port. Gets hairy here 1st wall of port 13.98'', and second wall is 1.37'' does this look right

 
After going over the math for about the 50th time, I found that if port wall 1 is int.depth-port width and port wall 2 is port length-ext. depth. This would give me 21.48-7.5 wall 1 is 13.98 and 28.06-22.98 wall 2 is 5.08 now this looks better but is it right? Also the box is 40x22.9x15.

 
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Cahm Rohn

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