If you ordered a dual 2, you cannot run it at 2ohm. Only 1 ohm or 4ohm. So are you saying its ok to run a dual 2 Fi BL15 off of a hifonics BRZ1700 monoblocc amp as long as im ruuning at 1 ohm or do i have to find a 2 ch. amp to run a dual 2 subwoofer?