Originally Posted by CBdicX
Atmos advice speaker setup
Hi, would a Front Height / Top middle / Rear Height give the same "Atmos" effect compared to Top Front / Top Middle / Top Rear ?
Or will it not matter for Dolby ?
The answer to this question depends on how you define "Front Height" and "Top Front". It seems like most people here define them based on whether they are on the front wall or the ceiling, but really, without knowing the dimensions of the room and where the MLP is in the room, that definition really tells us very little about the angles of the speakers relative to the MLP, which IMO is the most important aspect of speaker placement.
Denon receivers appear to make slightly different assumptions on angle between the two:
What that translates to as far as real-world performance depending on whether you select "Front Height" or "Top Front" in a Denon receiver for a pair of speakers in a particular location, I'm not exactly sure. What I do know from my own testing is that having Atmos speakers at the ideal 45 degree azimuth and 45 degree elevation angles sounds significantly more immersive and fluid for moving objects. This is regardless of whether, at those angles, they end up on your front wall, side wall, or ceiling. Where they end up will depend on the dimensions of the room and the position of the MLP. IMO that is the single best location for that speaker in that room, and which barrier it falls on, or whether it is in line with the mains, none of that matters.
I've been wanting to start a good discussion on this. I think it is a hugely important matter, as I see countless numbers of new setups where people are placing speakers based on them needing to line up with the mains, and are ending up with compromised setups because of it. As many people have observed, it is really difficult to end up with an Atmos setup that doesn't sound great, but this is AVS. Here we don't shoot for "sounds great", we shoot for "sounds the best it possibly can".
IMO the "lining up with the mains" is complete nonsense. That only tells you the lateral distance from the MLP, essentially only a single leg of the right triangle which defines the angle. What good is that, and why is that even remotely important? We hear sounds coming from an angle relative to us, therefore that is what matters.
Here's my Atmos speaker placement advice. Go to the MLP. Turn 45 degrees. Go up 45 degrees. Where are you pointing? That's where the speaker should go, if possible. Period. End of story.