I've never built a box before, I was wondering if I could get some input and help on building my first box.

I want to build a box for 2 Alpine Type R 12's. Dual 4ohm voicecoils.

I listen to mostly rap, but with some rock now and then. I'm going for SPL, assuming it won't sound terrible. Haha.

Anyways, could someone help me pick ported or sealed? Possibly some help with blueprints or something? I'd appreciate it a lot. And if you need to know anything else, let me know!

Thanks!