I wouldn't trust anything in MB Quart FX family. I have seen a test of a full range FX amplifier showing about 60% of rated RMS wattage.or if you want to spend a bit more and not buy as a package
MB Quart FX1.400 $80
Kicker VC124 (10VC124) (in a ported box) $130
and 4g wire kit from $19
$230