I have the Arris device connected to the Harman Kardan AVR via HDMI cable. The HK unit is connected to 5.1 speaker system
Going to a HBO tv show with dolby sound (Terminator salvation) the receiver shows only 2 channel sound.
When using playstation 4 (connected to the AVR via HDMI as well), 5.1 works fine.
ANyone able to help?