In a perfect world, If one were to utilize four full range floor standing speakers in a QUAD set up, there were theorectically be 6 channels of sound with no need for a sub .... as the front and rear r/l speakers would yield a perfectly rendered phantom front and rear channel.
But space constraints and cost factors eventually favored bookshelf type speakers which naturally needed a sub for deeper bass and the center channel, of course, was a direct correlation to the dialogue channel movie theaters had been utilizing for years in large theater venues to prioritize dialogue ....... but it was NEVER really intended for music which did cause a lot of confusion for remixers who at first didn't know what to do with it other than to isolate vocals.
And even renowned mixing engineer Elliot Scheiner once stated that 5.1 is more than sufficient for rendering music.
And now we have 7.1, 9.1 and 11.1 [or 2] channels of sound to 'play' with which begs the question of whether we're attempting to turn our home environment into cavernous movie emporiums!!!!!
Apparently, 4.0 and 5.1 didn't convince music enthusiasts of a pressing need for more than 2 speakers but out of the blue, because of Dolby's success with Atmos for movie theaters, Dolby and now Universal suddenly feel the urge to 'blast' an already minute niche market with overhead channels thinking this is THE moment we've SUDDENLY all been waiting for.
And like a bevy of QQ posters, I too am skeptical about this latest endeavor. We'd ALL love MORE and MORE [and MORE] Surround remixes but Universal's history [and they're NOT alone] has been one of playing HOPSCOTCH in the surround arena......QS QUAD Vinyl/Q8>DVD~A>SACD>BD~A and now DOLBY ATMOS.
IMO, the ONLY way this new endeavor WILL FLY is if Universal/DOLBY put someone in charge who knows FULLY WELL what they're doing and not some hacks who will inevitably screw up what conceivably could put surround on the MAP! IMO, Steve Genewick is that step in the right direction and if he can bring in some other talented surround remixers from the vaulted Hollywood Motion Picture sectors who are adept at remixing for ATMOS, Eureka can finally be achieved.