The wallplates just fit into a standard electrical outlet box. You just mount the boxes on the studs where you want them and run the speaker wires to the boxes. The drywallers will just drywall around them the same as if they were a standard electrical outlet box. If you want to save some time Home depot usually has some decent in wall 12 gauge speaker wire for pretty cheap. As long as the wire is run you can get the speaker terminals from monoprice and install them later.

2xM80 VP180 2xQS8 2xM3 HSU STF3 LG 60PS11 Denon 3808 ATI 1506 LCR 2xATI 1502 Oppo BDP-83