DTS decoding and active speakers
7.1.4 configuration for Dolby Atmos with TF, TR
When I play a DTS-HD MA 5.1 signal, typically from Bluray Music discs, I get the surround options from Music remote button:
- DTS-HD MSTR
- DTS-HD MSTR + Dolby Surround
- … etc.
When in “DTS-HD MSTR” it is supposed that the only active speakers would be the 5.1, as in the original signal. But the OSD (Info remote button) shows active ALL speakers, as if some upmixer was engaged. Actually, I hear clearly the SB speakers, but no sound coming from the Tops. It works like an upmix to only 7.1. Or perhaps just a copy of the Surround to Surround Back, as I hear exactly the same from both.
Then if I change to “DTS-HD MSTR + Dolby Surround” it works as expected. OSD keep showing all speakers active and now I hear sound from the Top speakers, as the DSU upmixer gives the full 7.1.4
If I want to just hear a 5.1 sound, as in the original mix, I have to change to the LPCM track in the source, and then yes, I get “Multi Ch In” sound with just 5.1 active speakers on the OSD and in the reality.
Is it a bug or an intended behaviour of the DTS decoder and surround modes on the 8500?
Denon AVC X8500H (Atmos 7.1.6, DTS:X, Auro-3D 13.1)
Optoma UHZ65 / Lumene Majestic Premium 270C
Dune HD Solo 4K / Dune HD PRO 4K / Oppo 203
Pulsar Audio Ambiente 7 / Ambiente Center / Master M5 / Access AC
B&W CCM 683