Starting the wiring. Ran out of speaker cable (Belden 10 gauge) so I'll have to wait for more to arrive. In the mean time, I'll complete the electrical, and do other low voltage wiring:
one run of RCA to each of seven positions (maybe two runs, if I find I have enough), which can be used for subs and/or powered speakers and/or monoblock amps at each speaker. This will be RG56 flexible 75 ohm cable, already terminated with RCA jacks -- it's monoprice video cable
one run, possibly two, of 75 ohm coax to each of seven locations -- which could be used as another RCA connection, or two. This will be Belden cable, not unlike what Blue Jeans uses.
one run of XLR cable to each of seven locations. Probably Audio-Technica. This is primarily for the balanced input on the powered speakers I plan to use. Of course, in the future, I could use unbalanced connections, or unpowered speakers and the speaker cable I'm throwing in there. At which time the XLR cables go dormant or are used for subs, etc.
All the above go to each of the seven low voltage boxes spread around the room.
In addition, I've got a new certified/tested hdmi 1.3 cable, and a set of Blue Jeans component video cables, which go to the projector location. These still need to be installed. Technically, the HDMI cable is not CL2 rated, but it's running atop and outside the walls.
Here is from outside the theater room, at the home run for all the cables, with most of the speaker cables here in place.
Here is the typical configuration along a wall. Low voltage comes down from the top, and the high voltage receptacles and wire will be run low, horizontal with the floor.
Here's a photo of the low voltage (in this case, speaker) wire heading back to the home run.
And, of course, the lovely whacky beams that sort of run through the room and will be soffitted around -- are turning out to be useful to get wire from one side to the other, since we have left little room elsewhere for that to happen -- unless I want to run it very long, and too close to the power lines.