I am thinking of buying an SVS 16-46 CS passive sub. It will be run by an Ashly Audio amplifier (FTX 1501) that puts out 185 watts @8ohm and 275 @ 4ohmsin stereo mode and 300 watts @8 ohms and 475 watts @ 4 ohms when bridged. The sub is a 12 incher. Will the amplifier be enough to run it and will this sub be suficient for an almost 3000 cubic foot rooms. Maybe 2 of these subs will do the trick? Thanks.