Bought this to use for small DJ gigs, together with Yamaha Stagepas 600BT. Stagepass has a sub output with fixed crossover frequency, but I use a separate Behringer cross-over to fine tune this combination, to better adapt the size of the room and position of the speakers. Gives good enough extra punch for my music style, and should I need more power in the future, it is easy to stack another unit. Not too heavy for one person to carry, but takes two hands, one single handle would work just as well. Some "rattle" or resonance can be heard at around 90Hz, maybe from the grille, but it does not really matter.