My gains are at 1/3, i am not clipping at least the amp didnt show clipping, though the amp is 2ohm mono bridged stable.
My sub is dual 2ohm. sorry, not dual 1. Its around 1.3ohm Mono for the amp
before raise impedance.
And the box is 4.5^3ft with 40^2" port.
My electrical was weak though , i had stock battery in front, and 2 small shurikens in back. I never turn it on loud for too long....,if my voltage drop below 12.8v, i would turn it down.