hdc4 12

Looking to build a new box for my 4.0 12 what should i do. I have it in a pro box (2.25^3) now but thinking it could do better, want to hit some decent numbers for 2200rms. Thanks.

I just got the AQ 4.0 3 days ago and with stock alt and battery, it gets loud. Running an Alpine v-power 2000 at it at 2 ohms, great sub but very power hungry. Could sound a little better, and read another forum they are mainly constructed for COMPETITIVE use, handling up to 8k for a burp...