I'll def invest in some when I have the money, for the big 3 as well for when I get a HO alternator.

I actually took the subs out of the box today and the guy who had it before my sister's boyfriend had each speaker wired to 4-ohms, and the way I had it set up, the two subs were in series as well, so 8-ohms?!

I rewired them to 1-ohm each, then in series to 2-ohms, turned off all the bass boost, and WOW.

The speakers actually have decent sound quality for Kickers (the box is tuned really low too, about 30Hz, it's a HUGE enclosure), and now they REALLY PUNCH. People in my backseat were complaining it felt like they were having a heart attack, haha.