Any 1 tested or own any of these subs,the sql or xtreme series only though.Also when getting an amp for a sub should your target be trying to match max rms or just enough power to get it to full excursion.And how do you find out how much it takes to get a given sub to full xmax?
best bet short of experience, is to contact the maker of the sub and tell them your box volume and type (sealed, ported, etc) and ask them ideal power. they'll know best.