CHF1600.–
Optoma UHZ65UST
4K, 3500 lm, 0.25:1
Question about Optoma UHZ65UST
Hello all. Does anyone have answers for me / us ? Question 1: To listen to Dolby Atmos and Auro 3D via my Denon AVR X4500H (9.2) I have to have an HDMI eARC output in the Optoma UHZ65UST ? Or is it also possible with the HDMI ARC output ? I mean the Optoma has "only" HDMI ARC outputs. Optoma says home cinema is output via the "optical" S/PDIF output. But as I have read, this only works up to Dolby Digital 5.1. Question 2: To avoid the much-discussed problem with the TV boxes (no picture/no sound, sometimes it doesn't work, switch off/on), I will connect the Optoma directly to the TV box (Sunrise) via HDMI, is this recommended? I will then connect the Optoma via HDMI to the Denon ARV, will this work? I look forward to your answers, and thank you in advance. mfg.
Question 1:
Yes you need eARC for Dolby Atmos and Auro 3D (or DTS:X).
To be able to output formats such as Dolby TrueHD, DTS-HD Master Audio or object-based formats such as Dolby Atmos, DTS:X and Auro 3D on your X4500H without compression, you need an eARC-capable source device (TV or projector). These formats cannot be transmitted via ARC. On this page you will find the differences and a picture with a comparison:
https://www.sony.ch/de...
The ARC input (monitor 1) on the X4500H should be connected to an HDMI 2.1 capable device (or at least one that supports the enhanced audio return channel). You could then connect other HDMI 2.1 devices to this and route the sound in all formats via eARC to the Denon. So much for the theory.
You say you have a 9.2 system. But for the object-based formats you mentioned, you need height speakers. With the Denon X4500H, which has 9-channel amplification, you could run a 5.2.4 or 7.2.2 system. Otherwise, you would need another amplifier to use the existing 11-channel processing, which would give you 7.2.4 or 9.2.2 as the maximum expansion level.
Question 2:
This would work in principle, but it doesn't make sense if you want to have the formats you mentioned. For that you would have to connect the units as mentioned above. If my gathered information is correct, the Denon AVR-X4500H can only do eARC on the ARC input (monitor 1). All other HDMI inputs are not equipped for this.
Your Sunrise TV box probably doesn't have any HD audio formats either, so it should rather be connected to the Denon itself (HDMI 1-7), or at best to an HDMI input on the beamer or TV.
You can find more information about eARC and HDMI 2.1 here, for example:
https://hifi.de/ratgeber...
If that's enough for you, please accept this answer or ask further questions if something is unclear ✌