Are these calculations correct?

[ra4u2nv 10+ year member]

Hello everybody I have been wanting to build an enclosure for my truck for a while now so finally I have time. I do not have a lot of experience but I have learned a lot for this forum. I have very few space to spare. I will be installing 2 Clif design 10in CD100w. I can only spare ext. measurements of 28wX15hX16d. I prefer ported if possible. I have come out with the following port measurements of 2 3inch round ports being 5.82 in port length tuned to 38 hz. It will only be a one chamber enclosure. Do these measurements sound correct. the speker parameters are:

Fo(HZ) 47, QMS 6.9, QES 1.3, QTS 1.09, VAS(liters) 28.2, REVC(ohms) 3.4, SPL 87, X-Max 14

Subs will be powered by an 800 watt amplifier.

Thanks in advance

Rick

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[ra4u2nv 10+ year member]

??

 

[Trixter 10+ year member]

i get 4.5" long for a tuning of 38hz..i would personally tun lower so the longer you have wouldn't hurt...imo.