Hi - I just got a new setup and switched my old Vero 4K onto it. It was previously used on a TV with its built-in 2.1 speakers only, so I’ve never used it with surround sound until now. The new setup is a Vizio P75-F1 and it’s connected to a Vizio sound bar model SB3651-E6 (which has 5.1 sound). The soundbar is connected to the TV via HDMI ARC.
The first thing I tried to play had a DTS HD 7.1 soundtrack. The audio had no center channel. If I switch to 4.1 or 2.1, it works fine (but no surround of course). Switching to passthru results in no sound (as expected).
I tried something that had a 5.1 soundtrack and same problem. Passthrough also did not work (this was not expected).
Other things I tried:
- Both audio output options (PCM/HDMI)
- All speaker configuration options - only 2.x and 4.x provide center audio
- All “output configuration” options
- Tried connecting Vero 4K directly to soundbar with toslink cable. Exactly the same: audio only with 2.x and 4.x. So not a problem with HDMI
Basically, I tried every possible option combination I could think of. Either I get surround sound with no center audio (odd-numbered speaker configs), or no surround (even numbered configs), or no sound at all (passthrough).
When I get no sound, and connected via HDMI, in some circumstances the TV shows a message on the screen occasionally that says the audio input is not in a compatible format.
I have an Amazon Fire TV gen 2 also hooked up to this TV, which has Kodi sideloaded, and it works fine with 5.1 passthrough audio. (Kodi running on Fire TV shows it’s using an Android audio device).