Im building a box for two SA-15's to go in a 2006 honda crv. I will be running them off a HFI 1500D and extra battery. I got the enclosure design from the ssa store and am hoping it works out good. The enclosure is going to be double flushed with bracing and tuned to 35 hz at 8 cubes. My goal is to hit 145 db+ and will upgrade alternator and amp in the future. Im going to post pics of my box build and system should be in by late april. Stay posted and if u have any suggestions or comments don't hesitate!