Can I have help on designing a box for my Mag?

[Afboy143 10+ year member]

Well right now I have a box for my 15" SI Mag that is 28 hz at 4 cu/ft (site specs) I want a more tighter bass that wont be so boomy. I was thinking about making a box that is 2.5 cu/ft ported to 35 hz. What do you think? Also can anyone design me a box if I paid them money?

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[Buckshot 10+ year member]

Well right now I have a box for my 15" SI Mag that is 28 hz at 4 cu/ft (site specs) I want a more tighter bass that wont be so boomy. I was thinking about making a box that is 2.5 cu/ft ported to 35 hz. What do you think? Also can anyone design me a box if I paid them money?

There are many here who design boxes. Some require payment, and some you should stay away from. I think you should go sealed, and see waht you think. A small-midsize sealed box might be an option.