JimBeam45

Thanks for the advice. The only reason I am asking for advice is I have herd the box designing software is not always accurate. I will try it and see.

Ported it is. Area of port and length? I may be able to squeeze another 2 cubes if need be.

Not sure I have skills to do. Will 4th order work well with only 2 18's?

Not sure I have skills to do. Will 4th order work well with only 2 18's?

If I squeeze hard enough around 20 cubes. I wanna do it to be not so normal. I think hitting so low is more impressive and harder to do.

Any help would be appreciated. Looking to wall 2 SP4 18's with a DC 7.5k in a Chrysler 300. I want it to hit mid 20hz. I am trying to see if anyone has any experience with these subs and how they react in certain box dimensions real world experience. I havean idea of what to do but not confident enough.