Kicking a**, that is...
About an hour ago, a drywall anchor holding one of my CBM-170 surrounds pulled loose from the wall and the speaker plummeted about 7' to the floor, hitting an aluminum heating unit and bouncing into the side of the tent that my twins play in :-o (thank god they weren't in it at the time).
I know, I know, they should have been mounted to a stud but WAF and acoustic factors dictated their placement. I check the security of the anchors fairly often, but it's been hella humid in CT lately and I can only assume that softened up the walls somehow. Either that or vibrations from a recently installed air conditioner rattled it loose.
In any case, I am ecstatic to report that not only is the speaker still fully functional, it has barely a mark on it. Fault the aesthetics of their finish all your want (I don't) but these babies are built to last.
p.s. needless to say, the 170s will now replace my old Cambridge Soundworks speakers downstairs in a 2-channel setup, and the much lighter CS will become my new surrounds. Not optimal, I know, but better than worrying about my kids getting brained because Daddy needs a seemless soundstage. Word to the wise -- never assume drywall will hold the 170s up.