i got a 1500.1 watt rockford amp hookt up in my car now with two 12's audiobahns.. they pound hardcore but kills power to whole system at over 24 volume (which i never need to turn to neways cuz car is shaking a part at 15... but after power dies in system i just restart car and all is fine... is this cuz my power cable is too small?

 

You never said what size your power wire is.
Check out this power wire ga. chart

http://www.the12volt.com/info/recwirsz.asp