A warning.

Not as in "they sound bad"; they're quite a nice sounding box matched with the proper QSC powermap. Listening to some NIN remixes on them sounds like a bigass decent stereo! (It doesn't hurt to have proper audionrrds setting this shit up... My god, I think sooooo many club PAs would actually sound pretty damn good if they weren't manned by the developmentally disabled! )

...but they are fragile and we've blown one, and then blown the replacement. Apparently it's a serious weak point in the design.