driftboy1992 Posted April 19, 2022 Report Share Posted April 19, 2022 Vehicle is 98 gmc c1500 extended cab System 2 sundown e15 2ohm subs Skar rp2000 1/0 guage power/ground Xs d4800 Alternator is 250amp alternator Also did the big 3 Box dimensions L 54 1/2 D 18 1/2 H 30 1/2 Sealed side is going to be 10 inches high calculation 5.8 cubic ft³. Leaving the Ported size 11.96 cubic ft³. Only thing I've ever done is Ported boxes and sealed boxes so needing some help. I've seen where it's supposed to be 15sq inches to each cubic foot idk of that's combined, if so it'd be 155 Sq inches only thing I could come up with is a 6x6x6 square port hoping someone can help me out. I'd post pics of it in truck but it's a mess currently from stripping everything out the back. Link to comment Share on other sites More sharing options...
Joe X Posted April 19, 2022 Report Share Posted April 19, 2022 Are you looking to do a blowthrough? Link to comment Share on other sites More sharing options...
driftboy1992 Posted April 19, 2022 Author Report Share Posted April 19, 2022 Nah I pulled the seat out, and built a base for the box to sit on. Everything is built just needing help on the port design. Link to comment Share on other sites More sharing options...
Joe X Posted April 20, 2022 Report Share Posted April 20, 2022 Just to answer the question, with a ported chamber volume of 12 cubic feet, 150 square inches of port area would be 10x15 inches, to tune that to 45Hz which is typical for those 4th bandpass boxes, the depth of that port would need to be 6.5 inches. Quite frankly you are going to require more support than the port, the box you show, hope is from another project since it's not even the size of the sealed chamber of your (I assume) wall. Walls look thin..etc. Link to comment Share on other sites More sharing options...
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