There's two brackets on the back for it to slide onto the included "T" bracket, and there's also a single bolt to hold it to the FMB. That bolt is centered laterally, towards the top of the speaker on the back. I'd have to look at home if you need more info, but I imagine you could construct your own mount (provided they weren't too thick) and just drill out a hole to pass that bolt through. There's a metal threaded insert in the QS8 housing that accepts that bolt, it's a very sturdy feeling connection point.
