This is a subwoofer only. Not full range. This is meant to an addition to your outdoor speaker array. It is a perfect match to any outdoor speaker environment as bass is so hard to sustain outdoors.
You'll need to have a passive crossover for your existing system. All you'll need to do is put a 200uF Capacitor (you provide) in-line with each of your satellite outdoor speakers to make the system stream correctly.
Then you'll have that super rich sounding system for your patio/deck/spa area.