I get sound as i would expect from the Atmos up firing speakers set to Dolby enabled. The sound is like a different channel, not just the same as the front pair, but no height. What is advertised is that sound can be heard as coning from the ceiling, a plane overhead for instance and, if there is also a rear pair, the plane can travel overhead from front to rear. This is what I am not getting. If you run the Atmos demo disc it can be heard that the Atmos speakers have a definite sound that is not replicated in the front pair or the surround pair if there is also a pair of Atmos enabled speakers at the rear. Those sounds are then heard in the rear surrounds on the track i am playing, if the Atmos speakers are turned off so, without the height effect I was expecting I get the same sound with or without the Atmos speakers so they are redundant, not needed, have no benefit. The channels are well separated in the demo disc and I do not loose atmospherics when not using the Atmos speakers. Have you tried Sky UHD without Atmos as a comparison if this is possible?