Originally Posted by Chadolac
What I'm thinking I want is to wire the house for a future 7.1 set up, and while I'm at it.. add ceiling speakers for Dolby Atmos..
Here's the kicker, most gents are saying You should use at least four ceiling speakers for optimization, yet most affordable recievers only support 5.1.2..
So my question is, what are your thoughts on wiring four speakers to work on the .2 channel? As shown below..
I currently have four ceiling speakers that should be up to the task and am thinking of upgrading my receiver to the Sony STR DN1080 which should be able to handle the power required.
That is an interesting idea and I'm sure someone out there has done a variant of this. I haven't studied your wiring diagram to see exactly how it works from an electrical load side, but the concept would be a power share between all four speakers so you might be volume limited.
Of particular note, however, if you have .2 of processing, the most you'd want to double up on the wiring is 2 speakers so that you have discrete left and rights (or maybe front and back). In a true Atmos implementation, all four would be discrete so you would get object imaging between them. The Atmos decoders are forced to a Left/Right decode of atmos speakers in pairs, so if you were to have a pair of Lefts and a Pair of Right, separated front to back, they are both getting the same audio, but dispersing it more evenly across your MLP. You'll get proper left-right object panning, but no front/back panning (which is the case for a regular 5.1.2). I'm not sure whether the boost in the benefit of the extra 2 in a .4 comes from this front/back object decoding (it is certainly part of it), or if it is subjectively more to do with the more enveloping speaker placement and less directional sound.
In the very worst case, you can set it up this way with your budget-friendly AVR, and upgrade later on to one that will do the processing for all 11 channels (for a bump up in price, but there are still non-separates solutions available). Some, like mine, have only 9 amps, so an inexpensive 2ch external amplifier is used to amplify the final 2 channels, but I get a discrete 7.2.4. In your case, you could do a 5.2.4 with this model without the need of an external amp.
[When you do upgrade, though, you'll be rewiring those speakers, so give yourself some play and accessibility to the wires, or figure out a simple way to have both wiring configs available from the get-to with only minimal adjustment through an accessible connector box, or something]
Caveat: I'm hardly an expert. Hopefully you get some other opinions as well.