z1 This can be selected when "Assign Mode" is set to "11.1ch" or "9.1ch" in the menu.
z4 This can be selected when "Assign Mode" is set to "11.1ch" in the menu.
z5 You can use the Rear Height speakers instead of Surround Height speakers for Auro-3D playback. For best Auro-3D experience, using Surround Height speakers is