So I love Monoprice and am considering buying all in-wall to outfit a 7.1 + 4 ceilings to prepare for Atmos and DTS:X (when announced). The AVR is going to be a flagship model at least 9.2, having to wait for 2015 announcements.
This would go in a dedicated basement media room that is ~15'x15' and will be finished to accommodate the speaker placement. Three of the walls are foundation+drop-insulation, with the fourth being framed from the finished basement.
The room would be all purpose movies, movies, tv, and games. The in-wall hopefully help with kid friendly since I expect the children to be the heaviest users.
I've read through parts of this thread and have a few questions:
* For the center channel is using two 6 or 8" in-walls ganged is better than the monprice 5" center channel?
* For front left/right, rears, and surrounds is going to 8" appropriate if it can be powered?
* For the ceiling are the down-firing type better than the angled for use as the height channels?
* Is it recommended to buy the backshell's for the ceilings, monoprice suggests they improve sound and bass.