For those lamenting my recent post, some collected thoughts and answers to queries above:
1. First, to be clear, this is a DOLBY problem and not a D+M problem.
To someone who asked above, yes Dolby has publicly stated this omission as intentional for years. For example this quote on DSU from a home Atmos white paper: ?To maintain the frontal spatial audio image, the upmixer will not send upmixed audio to speakers that are located between the left, center, and right speakers or to the left wide and right wide speakers.?
Also they never had front wide output on previous upmixers even when DTS and Audyssey DSX options did.
And as noted above not even Trinnov processors have this capability.
This is why it was so surprising that the early manual PDF indicated this was possible. Turns out it was just an especially unfortunate typo [IMG class=inlineimg]https://www.avsforum.com/forum/images/smilies/frown.gif[/IMG]
2. I?ve also confirmed the 11ch limit for DTS:X / Neural:X output. If I deactivate my back surrounds (so 5.1 + FW + 4 Heights) then the DTS flavors do output to FW. No such luck w DSU.
3. No reason DSU shouldn?t work with 7.1.6 output and I will test that son (reconnecting my back surrounds as RH just for testing). So you could theoretically do a 7.1.6 setup with FW instead of SB.
4. Yes this is a huge bummer for 9.1.4 setups as the full 13ch layout will ONLY be used with NATIVE Atmos mixes. Everything else (Auro aside) will be 7.1.4 with silent FW speakers.
5. I wouldn?t hold my breath waiting for Dolby to change this considering what I described in #1
above. It seems more likely that DTS will allow 13 outputs with Neural:X at some point than Dolby will allow FW output with DSU.
6. For Auro-philes, it may mean (once the firmware is ready) the optimal layout will be 9.1.4 with FH+RH+CH+VOG. Then you can play native Atmos with 9.1.4 and use Auromatic upmixer for 7.1.6 output on non Atmos material. Then you get 13 speaker output 100% of the time, although again FW will only be used w native Atmos.