Originally Posted by CCSchoch
I am just beginning to look into Atmos. Currently I have a 5.2 setup.
My room doesn't allow for rears, but I could put in 4 ceiling speakers to accommodate a 5.2.4 if I went to a Atmos receiver.
Fronts Axiom M60's
Center Axiom VP180
Surrounds Axiom QS8's (left and right of couch about 12 feet from front of room, no wall behind me, opens up to kitchen)
Subs Dual SVS PC13 Ultra (Front left and right corner)
Some beginner questions.
1. First, for those who currently have Atmos installed at home, is the improvement that noticable?
2. What will a receiver do with non atmos encoded blu rays. Will is just play sound in the normal 5.1 setup and the ceiling speakers will be ignored, OR will it re-direct sounds so the surround sounds get split up between the surrounds and the Atmos in ceiling speakers?
That's up to you. Atmos and the new Dolby Surround upmixer are separate functions. Atmos decodes Atmos-encoded soundtracks. DSU upscales non-Atmos soundtracks to use (almost*) all of your speakers. DSU is one of maybe a half-dozen playback options available. Two of them are "legacy" upmixers (DTS Neo:X and Audyssey DSX). Others can leave the incoming decoded soundtrack unmodified, down-mix it to stereo, etc. (Almost* = Front Wides are not used. But you wouldn't have FW if you nave a 5.2 configuration.)
3. If I install 4 ceiling speakers, from the diagram above at Dolby, it looks like you should install them relatively close to the rear surround speakers...a couple in front of a couch and a couple behind a couch (which BTW is my setup...I have 1 listening position w/ a couch...by surrounds are to the left / right of the couch).
Right. There are 5 overhead positions. You seem to be describing the two pairs closest to the seating, which are called Top Front and Top Rear.
I thought I seen a diagram a while ago that showed 2 front Atmos speakers toward the front of the room and 2 Atmos ceiling speakers at the rear of the room. But from the diagram above it looks like all 4 are toward the rear of the room.
I don't know which picture you're looking at, so I can only guess that it's a trick of perspective. The 5 allowed overhead positions are called (from front to back) Front Height, Top Front, Top Center, Top Rear and Rear Height. You can use any two of them, so long as they're not adjacent to each other.
Which setup is preferred / correct?
That's very much up to you. Top Front + Top Rear probably are the most appropriate if you're going to be using in-ceiling speakers.
From your comments, I'm guessing you might not have seen the oft-posted speaker placement diagrams that D+M provides in their Denon and Marantz manuals. See below.