Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
cancel
Showing results for 
Search instead for 
Did you mean: 
mrktin2
Level 7

No Dolby 5.1 on roku 4460R

I tried all the settings suggestions mentioned on this forum and from searching google without any success. My roku 4460 is running OS9 build 4142-46. 
My appletv and directv satellite plays dolby 5.1 just fine with my lg 4k tv and bose avr. The audio out on lg tv is “optical/HDMI ARC”.

Anyone on the forum any suggestions to get dolby 5.1 working on 4460R?


Thanks....
0 Kudos
8 Replies
DBDukes
Level 10

Re: No Dolby 5.1 on roku 4460R

"mrktin2" wrote:
I tried all the settings suggestions mentioned on this forum and from searching google without any success. My roku 4460 is running OS9 build 4142-46. 
My appletv and directv satellite plays dolby 5.1 just fine with my lg 4k tv and bose avr. The audio out on lg tv is “optical/HDMI ARC”.

Anyone on the forum any suggestions to get dolby 5.1 working on 4460R?


Thanks....

There is no 4460.

The models that start with 4 are:

  • 4200

  • 4210

  • 4230

  • 4400

  • 4620

  • 4630

  • 4640

  • 4660/4661 (current)

The only current model is the 4660/4661 (same device, different headphones). So, which device do you have?
DBDukes
http://www.dbdukes.com/
Roku Ultra (4660)
Roku Premiere+ (3921)
0 Kudos
mrktin2
Level 7

Re: No Dolby 5.1 on roku 4460R

My mistake, i have the 4660R
0 Kudos
mrktin2
Level 7

Re: No Dolby 5.1 on roku 4460R

Someone mentioned dolby 5.1 was working on os8.2?
0 Kudos
atc98092
Level 16

Re: No Dolby 5.1 on roku 4460R

As Duke mentioned, you have the model number wrong. My guess is the Ultra 4640. I have that model and it outputs 5.1 without a problem. However, if I understand correctly, you have the Roku connected directly to your TV, with optical out from the TV to your receiver. Be aware that not every TV will output 5.1 audio from external devices. You do mention an Apple TV and DirecTV, but you don't mention how they are all connected. That is an important piece of the puzzle. My 4640 is connected to my AVR via HDMI, so the audio doesn't pass through the TV. 
.
OK, you have the 4660. It is also capable of outputting DD. However, if you are watching something like Netflix or Amazon, those sites use Dolby Digital+, which likely cannot be sent out from your TV via optical. Your TV might accept the DD+ signal, but can't send it out via optical, so it is converted to PCM stereo. And your 4660 cannot convert the DD+ to standard DD. 
Dan
Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
0 Kudos
mrktin2
Level 7

Re: No Dolby 5.1 on roku 4460R

My appletv and directv connected to tv via hdmi.
Tv connected to avr via optical...
0 Kudos
atc98092
Level 16

Re: No Dolby 5.1 on roku 4460R

"mrktin2" wrote:
My appletv and directv connected to tv via hdmi.
Tv connected to avr via optical...

Ok, I think that identifies the problem. The sites you are streaming from the Roku most likely use DD+, and your TV can't convert it to DD, so you only get 2 channel PCM. Since the 4660 can't convert the DD+ itself, you have no choice but to get 2 channel sound. Your only options are to either find an older model Ultra (4640) or replace your AVR to one with HDMI inputs and supports DD+. My suggestion is a new AVR.
Dan
Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
0 Kudos
mrktin2
Level 7

Re: No Dolby 5.1 on roku 4460R

thanks on the new avr suggestion. I will check it out.

Last night I did some testing...

Vudu app on lg tv , I watch TMNT (free movie) - display Dolby 5.1 on avr
Vudu app on Roku, I watch same movie (TMNT) - display PCM on avr

a few threads on the forum that Dolby 5.1 and Dolby passthrough stop working on OS9 but working on OS8.2
0 Kudos
atc98092
Level 16

Re: No Dolby 5.1 on roku 4460R

The app on the TV itself will of course always have supported audio. How it handles audio from an internal app cannot be compared to how it handles audio from an external source like a Roku, I'm afraid. Your TV appears to be able to handle DD from external devices (your DirecTV box and your Apple TV). It's the DD+ that is tripping it up. It's too bad that Roku removed the DD encoder from the Ultra 4660, since it would have been able to convert DD+ to DD and you TV would pass that out the optical. 
Dan
Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.
0 Kudos