You can have all of it, volume, low bass and refinement. I do use QSC amps to drive my subwoofers but would never resort to PA loudspeakers for home use. They are usually fatally colored. I can understand the attraction as commercial equipment is much less expensive. Getting the required output out of an audiophile system is not an easy trick either and can get expensive in a hurry.
You do not have to resort to PA equipment for "insane" bass. All you need is a lot of surface area and power. The minimum requirement for a small system in a 12 x 16 foot room is two 12" subwoofers. My system is on a 16 foot wall and I use eight 12" drivers in four enclosures. Each enclosure gets 2500 watts. They are also set up to form a line source or linear array like you see in stadium concerts.