i'm not exactly sure what coil configuration the sub is but each amp is strapped at 1 ohm so a final load of 2 ohms I think.
No worries. I can just promise you his electrical isn't enough to run two amps at .25 each. That being said, if he would have an amazing electrical, and a proper box,wiring it to .5 total, this thing would probably SLAM!
Edit: yes, that's a 2ohm load.
it slams already but he'd rather be safe then sorry, all he has is zero gauge ran through the car to a 100lb rear battery idk what kind it is, not kinetik or XS power, but also not optima's, he's still gotta do the big three though.