The setup:
AVR: NAD T758 v3
TV: LG C3 OLED
After a longer period of running 2.1 and 4.1 for several reasons, I finally had the chance to reintroduce a center channel speaker to our system.
Set up things as usual, ensuring no upmixing was selected as default and so on.
Watching 5.1 content from the TV's built-in apps are played back perfectly with no issues. However, all 2.0 tracks from the TV when outputting bitstream result in any monomixed parts being muted, but only above the crossover point.
If I turn on Dolby Surround, the missing audio is output correctly through the center channel.
Stereo tracks from streaming on the receiver are fine, as are 2.0 PCM.
I have reset the HDMI ARC handshake and reset the TV.
Do you guys have any suggestions or possible causes? My next moves are a reset of the AVR and a new HDMI cable.
This TV and receiver have previously worked with a 5.1.4 setup with no issues pertaining to stereo playback.
Thanks in advance
