I have a Denon AVR-X7200WA... In regards to the functionality of DTS:X/Neural:X I think it should be identical to the 8802A.
I have found some issues.
I also have some comments about Neural:X as an upmixer of 2 channel sources.
I spend a little time today with
.... they can chime in if they want.
Let me state my setup. I have a Denon X7200. My LCR and LR RR are fed via an Emotive XPA-5. I have Pioneer Dolby Enabled Spearers for my L, R and LS, RS... the up firing Atmos speakers are fed by the AVR.. This allows me to quickly turn off my mains and only hear what is coming from the overheads/tops/heights... even though they aren't really heights, I can easily change the AVR to send those signals to those speakers. Also, because of the way the Denon assigns outputs, the Surround Dolby Speakers turn into wides when I change the Denon setup to 9.1 with no overheads... so this has allowed me to try and figure out what is feeding the wides.
But my initial setup is 9.1 (5 + 4 Dolby Speakers...)
No EQ/Room Correction, speakers SPL"d via SPL meter..
I also need to do some tests having the AVR setup in 7.1.4.. so the following conclusions, and I think I found some bugs, might disappear when I do so..
This is only a preliminary report...
I have a copy of the 2016 DTS DEMO DISC.... which has an 11.1 channel channel ID track... L, C, R, LSS, RSS, LBS, RBS, FLH, FRH, LBH and RBH identifiers... this is what I used for many of these observations.
When playing back DTS:X tracks, and the Neural:X Surround Parameter turned "Off"... the wides are fed copies of the respective side surround information.
When playing DTS:X tracks, and the Neural:X is turned "On" it appears the wides are fed a center extraction from the LF and LSS (same for the right side...)
I can only assume that when objects pass through they will do so on top of the above mentioned audio...
The wides are constantly engaged....
2. Rendering Issues..
Playing the same ID track, the only correct behavior seems to occur when setting the AVR to heights FH and RH's (front and rear...)
When you setup the AVR for TF and TR, (wither overheads or Dolby Enabled) the AVR MULT's the audio for the RH signal to both speakers at once.. i.e. both the L and R rear heights come out of both TR speakers.
To be more clear the channel ID dialog "Left Rear Height" comes out of both the TRL and TRR speakers.. same for "Right Rear Height..."
This obviously is a bug.. as many are reporting substantial overhead activity with this codec, it could easily be tracked to this, and not the mix.
3. Neural:X - with two channel sources.
I have not tested Neural:X with multichannel sources.
Only 2 channel.. both through AirPlay or through my Apple TV via HDMI….
The following tracks were used to listen… No Doubt “Hella Good,” Evanescence “Wake Me Up When You’re Sober,” Lyle Lovett “I’ve Been To Memphis” and others.
First I listened in stereo… Sanjay and Scott came by later and we repeated the same tracks…
Then I switched to DSU… I’m familiar with that using these songs… on No Doubt it does a very good job of steering the panning vocals and synths… the song also has a very present hi-hat…. that was squarely in the center as were most of the other parts of the drum kit..
Switching to Neural:X… My first impression was that something was wrong. The hi-hat last it’s attack, and a bunch of it seemed to be pulled back into the surrounds… Sanjay noticed most of the attack/pluck on the moving bass line was missing… it seemed to homogenize the track.
To my ears, it felt like a blanket was thrown on the mix… it seems to be definitely more “immersive” and “domed….” But to my ears it was lacking a great deal of detail and life…
There also seemed to be times when the steering was creating “phasing” artifacts.. it had a bit of a processed sound to it…
Even more concerning, however, was there were several times where the center channel started to distort and break up… this was really bad.. it immediately went away when switching to Dolby Surround...
This was a big problem in my system.. it needs more examination. I might have a center channel on the edge of being bad, or a failing amp channel... however, it was only an issue with Neural:X at moderate volume.
I tested a couple with 12 string guitars and the upper strings seemed to recede into the muck…
But again, it was most early obvious on hit hat’s and snares.. IMO came across as attenuated and rolled off..
Just so I can get more feedback from others, I am going to cross post this in the X7200 and DTS threads....