Carlo_M
Senior HTF Member
- Joined
- Oct 31, 1997
- Messages
- 13,392
TL;DR - Atmos overhead speakers are cool and add to the Atmos experience...but IMO you get more bang for buck going 7.1 first.
Ironically, this recent epiphany of mine was only discovered during my failed first attempt at watching Black Panther at the big auditorium (Laser IMAX projection) TCL Chinese Theater when their connection to the IMAX servers went down. While they were troubleshooting what was going on they ran the theater calibration protocols which displayed on the big screen. That's when I noticed that the side channels (which I'd always know the speakers were there, but never stopped to think about what channel they may be mapped to) were noted as "side speakers". And then in the back were rear left/ride surround.
Because of my living situation I've never had a dedicated theatrical room (the area I have to live in due to my long-time workplace has ridiculously high housing costs) so I've always had to be creative with my speaker layout. Since the early days of 5.1 I've always placed my surround channels to the back surround position (about 25 degrees behind the main listener position on either side) so that I could get that almost 360 degree soundfield. When Atmos came out, I first added the front height speakers (Prime Elevation mounted high, pointed at the main seating position) which I thought added a nice subtle touch of overhead effects. I now have a second pair Elevations en route to install as rear heights. I expect a similar added subtle improvement to overhead Atmos soundtracks during those parts of the soundtrack that have overhead effects that pan front-to-back. Granted overheads are not the most aggressive channels so it's ironic how much money and effort I will have expended for what is admittedly a pretty small percent of the movie's soundtrack.
So back to my recent epiphany about the "side channels" that I saw in the theater's calibration screen. When I got home, I re-confirmed my memory that there are indeed "surround L/R" channels on my receiver which I don't use (as I said, my rear channels are mapped to the rear-surround L/R channels). I dug out some extra speaker wire and a pair of old bookshelf speakers I was no longer using, and plugged them in to the Surround L/R channels and placed them about 6' to the L and R of the seated position (it's all I have room for). They're about 1' in front of the seated position due to logistics, but they're pointed at the listener. I re-ran the manual calibration, adding the new speaker channels, inputting the distances to the speakers, and using an SPL meter to match volume levels. So now my setup looks roughly like this:
with the newly added speakers being those immediately to the left and right of the couch.
Holy cow what a difference this has made. I daresay more than the front overheads, simply due to the greatly increased action that is directed to these speakers in 7.1 soundtracks.
Speaking of 7.1, I had largely ignored how many of our pre-Atmos releases came with DTS-HD MA 7.1 soundtracks. To me there was 5.1, and then my eventual "holy grail" of Atmos when I could add the relevant overhead speakers. It didn't even dawn on me that Atmos actually plays better with a 7 channel setup.
Of course the first things I queued up after installing the side channels were MCU Atmos movies. Sure enough, that last little bit I missing of the "theatrical audio experience" was immediately filled in. I didn't know all this time how active those side channels are in Atmos soundtracks. But that wasn't the end of it. Curious that I now had a 7.1.2 system I went looking for DTS-HD MA 7.1 soundtracks and selected the original Kingsman UHD. Holy cow, the side channels are active throughout much of the movie and significantly add to the enveloping sound experience. I'm just going to guess that even for Atmos movies, the side channels will contain significantly more soundtrack information than the overhead tracks.
Don't get me wrong. I'm still excited to add the rear height channels. But for those who are in 5.1 land, and are contemplating what to add next, my recommendation would be to create a 7.1 system (if your room allows it) first. In my experience you will gain more in terms of recreating the theatrical experience with the added side channels (or if you're already running side channels, add the rear surround channels) than you will with the overheads.
Ironically, this recent epiphany of mine was only discovered during my failed first attempt at watching Black Panther at the big auditorium (Laser IMAX projection) TCL Chinese Theater when their connection to the IMAX servers went down. While they were troubleshooting what was going on they ran the theater calibration protocols which displayed on the big screen. That's when I noticed that the side channels (which I'd always know the speakers were there, but never stopped to think about what channel they may be mapped to) were noted as "side speakers". And then in the back were rear left/ride surround.
Because of my living situation I've never had a dedicated theatrical room (the area I have to live in due to my long-time workplace has ridiculously high housing costs) so I've always had to be creative with my speaker layout. Since the early days of 5.1 I've always placed my surround channels to the back surround position (about 25 degrees behind the main listener position on either side) so that I could get that almost 360 degree soundfield. When Atmos came out, I first added the front height speakers (Prime Elevation mounted high, pointed at the main seating position) which I thought added a nice subtle touch of overhead effects. I now have a second pair Elevations en route to install as rear heights. I expect a similar added subtle improvement to overhead Atmos soundtracks during those parts of the soundtrack that have overhead effects that pan front-to-back. Granted overheads are not the most aggressive channels so it's ironic how much money and effort I will have expended for what is admittedly a pretty small percent of the movie's soundtrack.
So back to my recent epiphany about the "side channels" that I saw in the theater's calibration screen. When I got home, I re-confirmed my memory that there are indeed "surround L/R" channels on my receiver which I don't use (as I said, my rear channels are mapped to the rear-surround L/R channels). I dug out some extra speaker wire and a pair of old bookshelf speakers I was no longer using, and plugged them in to the Surround L/R channels and placed them about 6' to the L and R of the seated position (it's all I have room for). They're about 1' in front of the seated position due to logistics, but they're pointed at the listener. I re-ran the manual calibration, adding the new speaker channels, inputting the distances to the speakers, and using an SPL meter to match volume levels. So now my setup looks roughly like this:
with the newly added speakers being those immediately to the left and right of the couch.
Holy cow what a difference this has made. I daresay more than the front overheads, simply due to the greatly increased action that is directed to these speakers in 7.1 soundtracks.
Speaking of 7.1, I had largely ignored how many of our pre-Atmos releases came with DTS-HD MA 7.1 soundtracks. To me there was 5.1, and then my eventual "holy grail" of Atmos when I could add the relevant overhead speakers. It didn't even dawn on me that Atmos actually plays better with a 7 channel setup.
Of course the first things I queued up after installing the side channels were MCU Atmos movies. Sure enough, that last little bit I missing of the "theatrical audio experience" was immediately filled in. I didn't know all this time how active those side channels are in Atmos soundtracks. But that wasn't the end of it. Curious that I now had a 7.1.2 system I went looking for DTS-HD MA 7.1 soundtracks and selected the original Kingsman UHD. Holy cow, the side channels are active throughout much of the movie and significantly add to the enveloping sound experience. I'm just going to guess that even for Atmos movies, the side channels will contain significantly more soundtrack information than the overhead tracks.
Don't get me wrong. I'm still excited to add the rear height channels. But for those who are in 5.1 land, and are contemplating what to add next, my recommendation would be to create a 7.1 system (if your room allows it) first. In my experience you will gain more in terms of recreating the theatrical experience with the added side channels (or if you're already running side channels, add the rear surround channels) than you will with the overheads.