Hi im getting 2 12's and I have been looking at ab xfl or sa 12. the price is about the same and the ratings look close. I am going to use a old orion 250 hcca " is that enough for 2 4 ohm subs " or should I get another 250 hcca and get 2 2 ohm subs ? the amp is said to put out about 1000 watts rms. thanks Jason also this is a blow through box for my truck, i was going to go 4 th order but now i can do a ported box also and run amps in the bed of my truck. thanks again for any help.