I just sat in my car listening to my set-up with my sx12 off btw, polk components in the front and alpines in the back. This is loud as hell, couldn't get past the first line on the volume control. For people that want to hit 130db's as a daily driver, you'll be deaf by your 30's.
lol but I'm gonna replace the alpines with polk 6 x 9 components anyway. The front sounds amazing.