ok i have my nom. batt up front with an 8g wire running to the back with another big batt. i have a pos 1200 amp running a kicker l715. a 550 2 ch runing 4 speakers. another 600 wat 2 ch runing another 4 speakers. everything works fine except when my sub hit hard the 550 amp turns off till i turn it back down. how do i fix this? and i plan on getting a HIFONICS BXi1606D to push my sub.