Originally Posted by Anthony Bish
I kind of wondered that myself but figured there was a reason he recommended the 800H. I see that their are quite a bit more features in the X1600H.
Im assuming the speakers I referenced will work for my front channels but will they also work for my rear surround channels?
Yes, with regards to the speakers. But you will be lacking a center channel speaker. The center channel is typically where most of the dialogue and vocal cue's come from and is perhaps the most important speaker used, especially during a move. The left, right, and surrounds add ambiance and the sense of movement as the sound from an action object on screen moves around. For sports on TV, the surround channels often pick up the crowd noise giving you a sense of being in the arena/stadium.
The AVR-X1600H can be set to create what's called a phantom center channel where stereo imagining creates the impression of a center channel. The success of this possibility is going to depend on speaker placement relative to seating positions.
I'm assuming that your structure is some kind of open Gazebo, Pavilion, or Pergola and I understand your aesthetics concern with placing the speakers concealed in the ceiling. Some things to consider...
Concealed ceiling speakers can work quite well for music distribution but for TV/movie watching, you will need to be somewhat sensitive to seating placement. The on wall type speaker like the Klipsch AW-650 will give you much more flexibility with sound distribution as they can be "aimed" at a specific area. As sound is some what directional, the ceiling mounted units will be "aimed" at the floor and you will depend on somewhat reflected sound vs. direct projection of an on wall unit.
Either way, I would suggest rethinking and look at a minimum of 5 speaker for center channel support and a subwoofer and something like the Denon AVR-X1600H.
Another multi-channel AVR unit to consider is the Denon AVR-S740H. It gives up almost nothing compared to the Denon AVR-X1600H and comes in at a much lower price point.