For any of you folks doing your own in-wall cabling and wiring installations, I installed terminal rectangles (Parts Express part# 260-309) for my QS8s. These are recessed so you'll be able to mount your QS's flush to the wall with a nice looking terminal.
I didn't like the connects on the plate so I drilled a 3/8" hole where the much smaller existing connector holes were and installed a pair of pictured gold binding post, they are much easier to connect the speaker wire to the backside of the plates with these post. These binding post can be bought at most local electronics stores.
Overall these terminal plates makes for a very nice and clean installation.