i have a 18" solo-x dual 2 ohm wired in parallel to 1 ohm in a 10 cubic ft ported box being driven from a hifonics 2400 watt brutus amp kinetic 1800 in back stock batt under hood after market 200 amp alt. and big 3 upgrade with 0 gauge all around when i first set system up was getting 14.5 at...