Originally Posted by harync
Pardon me if I missed this in all the discussion, but do the 2018 Denon/Marantz receivers require CEC to be engaged for eARC to work?
response, the answer is NO, it's 2018 Denon X4500H has HDMI Control (CEC) OFF (from the screenshot) and a working eARC from its Sony TV (that also has Bravia Sync (CEC) OFF.
Originally Posted by harync
For my Pioneer VSX-LX503, since eARC was enabled via firmware upgrade, I'm thinking that Pioneer/Onkyo found it easiest to shoe-horn eARC in the CEC Menu sub-system. I'm wondering if Denon did the same thing for their 2017 models, vs. the 2018 models where they could design it with eARC as a separate function from the ground up?
Both 2017 and 2018 generation of Denon/Marantz receivers have separate settings for ARC and CEC (HDMI Control) but it seems that in the 2017 generation the eARC is not quite the same implementation as in the 2018 models. So the 2017 Denon situation might mirror your Pioneer VSX-LX503 situation.
Originally Posted by Keenan
CEC is called Bravia Sync on the Sony and it is off, I never use CEC. With CEC off eARC works just fine including passage of LPCM(5.1/7.1) along with all the other usual formats.
This is with a Denon AVR-4500H(2018 model year) and a Sony A9F 65" OLED(2018 model year) and using an OPPO 203 as the source device. Content used to test was various lossless files via the local network and the Blade Runner 2049 UHD disc(DTS-HD MA 7.1) and the Annihilation UHD disc(Dolby Atmos).
eARC works independently/autonomously of CEC on the Sony display.
Thank you! So you have CEC disabled of both devices (TV+AVR) and eARC is working without CEC.
Some conclusions regarding LG C9 with its eARC drama:
1. the 6/8 channels LPCM missing EDID is LGs fault, and it should be resolved by LG;
2. the 2017 Denon/Marantz receivers have a real problem with their eARC and it shows with both LG and Sony eARC TVs;
3. the 2018/2019 Denon/Marantz receivers work fine with both LG and Sony eARC TVs;
4. we still need to confirm with an eARC working 2018/2019 Denon receiver if CEC can be disabled on both C9 and AVR and that eARC is still working, just as in the Sony case;
Updated list for known AVRs vs C9 eARC
AVRs known to work with C9 eARC
- Pioneer VSX-LX503 - 2018 - (requiers CEC=ON on the receiver for eARC to work)
- Denon AVR-X3500H - 2018
- Denon AVR-4500H - 2018 - (also works with the 2018 Sony A9F/AF9 OLED eARC TV, with CEC=OFF on both)
- Denon AVR-X6500H - 2018
- Yamaha RX-V685 - 2018 - (requiers CEC=ON on the receiver for eARC to work)
- Denon AVR-S750H - 2019
- Denon AVR-X1600H - 2019 - (also works with 2019 Sony X950G eARC TV)
AVRs not working with C9 eARC
- Denon AVR-X3400H - 2017
- Denon AVR-X4400H - 2017 - (on TV Audio is capable of only Stereo with the 2018 Sony A9F/AF9 OLED eARC TVs internal apps, HD audio does pass-through!);
- Denon AVR-X6400H - 2017 - (on TV Audio is capable of only Stereo with the C9);
- Marantz SR7012 - 2017 - (also no HD audio with the 2018 Sony A9F/AF9 OLED eARC TVs internal apps/Plex)