For those of you interested, my front S2's are mounted on B-Tech BT-77 stands:http://www.btech-usa.com/bt77.html
... that I had to modify by removing the side clamps and affixing this metal plate from Monoprice (via some screws and nuts):http://www.monoprice.com/products/pr...seq=1&format=2
which I spray painted gloss black using Rustoleum gloss black spray paint. I made a cardboard cutout of the metal plate, then put it on the bottom of my S2's and put holes where the mounting holes are on the bottom of the S2's. Then affixed the plate to the mounting bracket (again, via small 10-32 x 3/4" screws with nuts), glued a piece of dark grey foam underpad from Homedepot and then screwed the S2's onto the plate (after affixing the BT77 to the wall with the plate).
As for the OMR2 rears, I honestly can't recall what mounts were used, but they look similar to these from Monoprice (except I'm pretty sure the ones I used were rated for 30lbs each):http://www.monoprice.com/products/pr...seq=1&format=2
I bought a couple of 1" x 4" (or so) metal plates from Home Depot, some 8 or 10x32 machine screws (fine thread - just makes sure the head of the screw will fit into the speaker bracket), matching nuts for the screws (2 per screw). Attached the metal plates to the existing metal back plate on the wall bracket using some screws and nuts. Then made a cardboard cutout of the back of the OMR2's and marked where the screw holes needed to be and drilled the appropriate holes into the metal plates, attached the 8x32 screws (one nut on the back and one on the front), mounted it, and voila, jigged wall brackets.
Yes, both of these were extreme pains to jig, but manageable. Of course, jigging any wall mount is not advised by the manufacturer, so do at your own risk!!