Kybol

Are there any box building programs, or is it all just CAD software?

OK, maybe I will go with a 10. I would also have to build a box for it, would 5/8 MDF be enough or should I go with 3/4 for this? Oh and on the box topic, is there any free program that I could use to plan it out in 3d? Thanks

I have a 98 GMC extended cab sierra and Just ordered some new components and will be buying a sub in the next month or 2. I was thinking about the RL-i8 or maybe a 10, I want to go with a sealed box under the rear seat and have a 600w mono amp to run it. Do these subs sound good sealed or should I go a different route? Thanks for any help guys.