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The Sphere in Las Vegas

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  • The Sphere in Las Vegas

    My wife and I attended an Eagles concert in The Sphere last Saturday night. To say I was blown away is an understatement.

    The best way to describe it that I can come up with is, it seems very close to one of those VR headsets, except you're not wearing a headset. The screen fills your entire field of vision and then some -- you can look up, down, left and right. The only thing that "gives it away" is the audience in front of you. When you first walk in, the screen is showing a huge outdoor scene and you actually feel like you must be outside.

    The song "Hotel California" contained a highway effect where the camera was cruising down the highway left and right and it absolutely felt like we were in a moving vehicle. Then all of a sudden it went down a steep hill and it just seemed like the entire building was rolling. It was amazing.

    The concert was almost secondary. As a guy in the elevator told me beforehand, "There'll be times you forget to listen to the music, you'll be so busy looking at the visuals." He was right about that.

    Don Henley stated in onstage remarks that they are still making adjustments to the show, and that was kind of apparent. There were notable pauses between some of the songs, and a couple of them had very limited visuals compared to the others. But the ones that were "finished" were outstanding.

    One thing I really liked was, when they would show video of the musicians, it wasn't just rectangular blocks like you usually see at concerts. The images would be integrated with the rest of the visuals. For example, on one song, the background was showing dozens of strips of old beat-up camera film (looking like it was hanging up during the developing process) and images of the band members was appearing within the film frames. Sometimes they would be integrated within clouds, etc. etc. It was very creative.

    The sound was downright amazing. The venue has over 160,000 speakers, not one of which were visible. They're all behind and above the screen. It was the cleanest concert setup I've ever seen -- no amplifiers or any other equipment was onstage, just the musicians and their instruments. There was no overbearing echo or reverb the way you usually get in concerts -- the sound was crystal clear, not too loud, about as perfect as you could expect in a room that's this large. Every lyric or spoken word was understandable and crisp.

    If I had any criticisms, I guess it would be that the playing was almost TOO perfect. They could have been playing to tracks. Every single lick from the original arrangements was there, down to the tiniest details. If not for the live endings, I might have suspected that they WERE playing to tracks, but I know the material well enough to know that it was a real live show. All of the Eagles (well, except the ones who are dead) are still in fine voice. The only one who's getting a little rough around the edges is Joe Walsh, who was hilarious and tried hard, but his singing is getting sketchy. Don Henley and Vince Gill sounded fantastic, as did Deacon Frey, son of the now-deceased Glenn Frey -- he and Gill covered Frey's songs. It was all hits and no filler, no guitar or drum solos or any of that nonsense. Just a stack of great songs. (I would have liked to hear more stage remarks, for sure.)

    The video quality was also tremendous. We had splurged for some of the best seats, which were very close to dead-center. If this was a regular concert I'd have been pissed that our seats were so far from the stage -- we were probably at least 250 feet from the band. But I knew the show would be more about the visuals, so that didn't matter. The screen apparetly achieves 16K, and it looked it. Brightness was great, and there was a little geometric distortion from where we were, but it wasn't usually noticable. I would hate, however, to ever sit anywhere other than in the middle third of the place. I imagine the view from the corners is horrible.

    The venue itself is a high tech marvel. The numbers associated with it are wild -- the roof is a 10,000 ton slab of concrete. There are 18,500 seats. The video runs on 150 computer systems. I already mentioned the 164,000 speakers. There are lots more statistics on the venue's Wikipedia page.

    I'll include a couple of pictures here, but they absolutely do not do it justice. The bottom pic is what you see when you walk in. The one with the mountains is, of course, from Joe Walsh's song "Rocky Mountain Way." The contrast was much better than these pics show (it's currently almost 1:00 AM and I'm too tired to adjust them right now!)

    I'm looking forward to seeing another show there, although I have my doubts that any of my personal list of "must see" acts will be there. I guess we'll see.

    Will this thing ever be a financial success? Given what they're charging for tickets, if they can continue to draw crowds, maybe it will. But I don't envision going to LOTS of shows here -- it'll take something major to make me want to spend the money that's necessary to get the good seats in the middle.Screenshot 2024-10-02 004632.png Screenshot 2024-10-02 004522.png Screenshot 2024-10-02 004456.png

  • #2
    WOW! In your pictures it looks like the audience is superimposed on a real outdoor scene.

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    • #3
      I'd been paying some attention during it's construction... but I never sought out photos during a show. Very impressive. A gimmick that only works for shows with explicitly built content... but still impressive.

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      • #4
        Last time I was there the construction of the sphere was almost complete. I guess we'll have to take a trip out there again...

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        • #5
          The bottom picture is a "panoramic" phone photo. In real life the audience is much less "curved" than it looks in the photo. Our seats were in the lowest balcony-type area, about halfway up... walking in, it felt like stepping into an outdoor amphitheater.

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          • #6
            Originally posted by Mike Blakesley View Post
            If I had any criticisms, I guess it would be that the playing was almost TOO perfect. They could have been playing to tracks. Every single lick from the original arrangements was there, down to the tiniest details. If not for the live endings, I might have suspected that they WERE playing to tracks, but I know the material well enough to know that it was a real live show. All of the Eagles (well, except the ones who are dead) are still in fine voice. The only one who's getting a little rough around the edges is Joe Walsh, who was hilarious and tried hard, but his singing is getting sketchy. Don Henley and Vince Gill sounded fantastic, as did Deacon Frey, son of the now-deceased Glenn Frey -- he and Gill covered Frey's songs. It was all hits and no filler, no guitar or drum solos or any of that nonsense. Just a stack of great songs. (I would have liked to hear more stage remarks, for sure.).
            With a synchronized video production like that, at minimum the drummer will be playing to a "click track" to keep the songs in synch with the video production. If the tempo varies even a little it will mess everything up as the song goes on.

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            • #7
              With a synchronized video production like that, at minimum the drummer will be playing to a "click track" to keep the songs in synch with the video production
              I know about click tracks, but none of the video was "on the beat" type stuff. It was all moving scenes, shifting patterns, etc. etc. The screen was completely dark at the end of most songs. I'd previously heard that the U2 show had "loops" built in to where the video people could expand or contract the video to match what the musicians were doing.

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              • #8
                Mike****Thanks for the photos and notes. What did two tickets cost you $$$$?

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                • #9
                  I didn't buy them (my wife did, it was an anniversary thing for us).

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                  • #10
                    Another thing your thread got me thinking about with respect to audio is that the speakers are behind the LED screen. I was watching a video about the algorithms they designed to offset the transmission losses. With the screen being further from the audience than a direct view LED screen would be in a movie theatre, it obviously allows for more space between pixels. However, it does show that it is possible to use some variation of the technology to allow high quality audio to be produced with speakers behind an LED screen in a movie theatre application.

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                    • #11
                      Originally posted by Lyle Romer View Post
                      Another thing your thread got me thinking about with respect to audio is that the speakers are behind the LED screen. I was watching a video about the algorithms they designed to offset the transmission losses. With the screen being further from the audience than a direct view LED screen would be in a movie theatre, it obviously allows for more space between pixels. However, it does show that it is possible to use some variation of the technology to allow high quality audio to be produced with speakers behind an LED screen in a movie theatre application.
                      I wonder if they handle their "concert" audio vastly different than media playback. I remember reading about a bagillion individual speakers aimed at tiny sections of seats.

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                      • #12
                        Originally posted by Ryan Gallagher View Post

                        I wonder if they handle their "concert" audio vastly different than media playback. I remember reading about a bagillion individual speakers aimed at tiny sections of seats.
                        They are using all of those speakers to do audio beamforming to direct the sound evenly and at the audience to minimize reverb and echo. I don't think that part of the tech is necessary for a movie theatre application. What would be relevant is the EQ they are using to minimize the effect of losses through the screen.

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                        • #13
                          I was under the impression the speakers in Sphere were above and below the giant screen and then maybe even built into the seats. If they actually have speakers behind the LED panels (or what sign guys call "driver boards") I'd really like to see the design.

                          Being able to effectively transmit audio through a LED-based screen is one of the key things needed to make it possible for mainstream commercial cinemas to adopt those kinds of displays. Cost is also an issue -not just the huge up-front price but also continual maintenance. I hope Sphere isn't bleeding a lot of red ink. I heard there were plans to build at least one or more of the venues elsewhere in the world. London is a proposed site, but that version of Sphere may be substantially smaller than the original in Vegas.

                          Unwanted audio reflections may be another potential problem with LED-based screens. I wonder if the interior shape of Sphere helps it in regard to dialing in the EQ. A boxy cinema room is quite a bit different.

                          Sphere is on my must-visit list for the next time I visit Las Vegas.​

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                          • #14
                            Based on this https://www.youtube.com/watch?v=A-1ICkrXu-Y, it seems they are behind the LED panels.

                            I haven't been able to find any detailed images of the inside screen but I can only assume the LED pitch is larger than a normal LED display which allows for space for the sound to transmit through.

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                            • #15
                              The Holoplot speakers shown in the YouTube video look interesting. I was disappointed they didn't show any of the LED panels.

                              The giant dome screen inside Sphere is reportedly 516 feet wide by 366 feet tall. It has a resolution of 16,000 pixels across. That would create a pixel pitch of around 9.83mm between pixel centers. That's a fairly tight pitch for such a large screen. But it would be a bit on the coarse side for a more standard-sized cinema screen.

                              The LED displays on a lot of outdoor signs vary between 10mm and 16mm in pitch (some newer displays are going to 8mm and 6mm pitch sizes). Indoor displays go tighter, down to as little as .085mm in the case of Samsung's "The Wall" model. A LED-based cinema screen would need to at least match 2K 2048x1080 resolution at the bare minimum. A native 4K display would obviously be preferred. That would be a much tighter pixel grid.​

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