z1 This can be selected when "Assign Mode" is set to "11.1ch", when "Assign Mode" is set to "9.1ch (Bi-Amp)" and "Pre-out for Bi-Amp" is set to "SURROUND BACK" or
when "Assign Mode" is set to "9.1ch + Front B" and "Pre-out for Front B" is set to "SURROUND BACK" in the menu.
z4 This can be selected when "Assign Mode" is set to "11.1ch" in the menu.
z5 For the best Auro-3D experience Surround Height speakers are recommended, however you may substitute Rear Height speakers from a Dolby Atmos speaker setup