According to: Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators , the port tuned to 30hz is 10"x1"x7".
In using Google sketchup. Total in the plans I have about a week of off and on work, but I have gone through a ton of different iterations trying to maximize what i can fit in the space, and swapping box volumes from the sub I was originally designing it for.
Was planning for a w6 at first but came across a screaming deal on a L7 and a zx1500. Plus i like a challenge and was already have my interior stripped for a full custom treatment.
Currently in Midland, but oddly enough am originally from the WF area. Volume after port and woofer displacements is ~2.98 cu.ft. if Ive done my math right. Its hard to nail it perfect with the plan for the top to be glassed with the sub being "pushed" out. Kicker specs ask for 1.75 - 3.25 cu.ft. As far as port length/displacement I was just going by what the12v.com's calculator said.
The reason for the low tuning is Im looking for an SQ box with some SPL potential. I like the nice tight bass that Ive gotten from other low ported boxes in other vehicles.
If I enlarge the port to be 13.5"X1" using the box bottom and sides for 3 of the port walls this would increase my port to 10.5" in length. but would lower box volume to ~2.95 cu.ft. Would this be preferable and why? Ive always built sealed boxes so I'm not totally sure on what makes a certain port better than others.
If a longer port is just for a better boost at the tuned freq I think Ill probably stick with the shorter port. A flat response is ok for this box. This is actually phase one of the build for this truck. Phase 2 is gonna be awhile as I will be turning it into a uni-body and doing a bed box. Thats when i plan on a full SPL oriented box.
I hear ya. Mine didn't originally but I plundered a 95 suburban for a pair at a local wrecking yard.
