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Re: no dolby digical in DVD mode.
PCM mode will not output dobly digital, use the digital cable connection, not RCA cables, set DVD audio output menu to Dolby digital or DTS. On DVD software menu setup select audio then Dolby Digital 5.1 or Dolby Surround.
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1- First make sure you are properly testing using a reliable source, such as a CD Player or itunes.
2- Make sure the Listening Preset is not on Dolby Pro Logic. Make sure it is on Stereo mode and see if the problem persists.
What usually happens is that when listening to 2ch (Left and Right) Audio such as Television or Music and Dolby Pro Logic is on as a preset, Dolby Pro Logic analyzes both Stereo tracks, tries to detect the voices (center channel), ambient sounds (surround and fronts) and processes the signals into a 5.1 or 6.1 System. You tend to get a fading effect when Dolby Pro Logic is selected and listening to an old VHS, DVD or even music.
To remove a preset, make sure you select the Stereo button at the bottom left of the remote to pan through the options.
Hope this helps
The 'best' audio result will always be subjective, but when it comes to digital multichannel content, the engineers probably had it right, so I'd go with Dolby Digital, THX for movies; and experiemnt with all the others for muical content becaasse any given audio recording can yield surprising new details when you turn DSP loose on it.
You may have had the receiver set to "Stereo" mode, or Analog instead of "Digital" or "Auto" (automatically switches to digital when it detects a signal) modes. Also, setting it to "Direct" (2-channel from an analog source) could result in loss of center channel. Or your Surround Parameter dial (on the higher-end Denons, at least) could be set to a 2-channel mode. Finally, if your digital inputs are incorrectly assigned (e.g., COAX1 instead of OPT1, or OPT2 instead of OPT1) for that source, the receiver will use the Analog signal which is stereo-only. You could get a center channel via Dolby Pro Logic II but it would be a "matrixed" signal, not the "real" center channel you could get via digital input using Dolby Digital or DTS. (If all else fails, re-check your center channel speaker wire connections. It's very unlikely, but also possible, that either the receiver center channel amp or the speaker has failed.)
Take a clue from the 10-year old vintage of the TV and the two analog audio cables. It's Dolby Pro Logic Surround at best, not Dolby Surround in the modern, digital, multi-channel sense.
TV's are not the source nor the end of a multi-channel audio chain. Feed this thing a 2-channel source from a Cable Box (into the "TV" jacks), DVD, Video Tape or CD with proper Dolby Surround encoding and will seem to open up the sound field a bit and kick in a little surround effect. It can also simulate a Hall effect and Dolby 3 stereo.
Chances are that Time Warner is just plain wrong. That's what you get with free tech supp....oh, uh right. scratch that.
Your receiver seems to be receiving a 2-channel digital audio signal (PCM) from the cable HD box. With this type of input signal, you can't select Dolby Digital on the receiver.
If you have a Scientific Atlanta 8300 (or a closely similar model): Press [Settings] button on the remote twice. This will open the General Settings menu. Go to "Audio: Digital Out" and the select Dolby Digital (by hitting [-> Move Right]).
If you have another type of cable box, just review the settings menus until you find something relevant to digital audio out and avoid PCM, stereo or "down conversion", but look for Dolby Digital, DTS or "All".
Please keep in mind, that when connecting devices via HDMI cables, your box may decide it's smarter than you and reset the format of the digital audio back to PCM. This is some possibility of this occurring if the cable box or TV is unplugged and plugged back in.
If you have problems, add the cable box make and model and let me know.
What device are you attempting to connect to your receiver? I would check to see if the device you want to connect is sending a digital signal to your receiver. With some dvd players the digital output isn't activated. You will have to go into the menu of the dvd player by using the remote and pressing menu or setup. Find something that involves audio, this setting maybe it PCM or Bitstream. If it is in PCM you will need to change it to bitstream to receive the Dolby Digital sound.
Also you may wish to check what mode the receiver is in. You may have to tell the receiver that you are using a digital input versus an analog one. Your owners manual may be useful with this step.
go in blue ray dvd menu as dvd is playing and select the audio out formatt u wann use has to be on 6.1 or least 5.1 digital not 2.o ch ok and u may be seding the digital with the hdmi outs not both be hard for it to do doe syour tv had digital opti out run that to reivciver on digital input ok tell blue ray options menu also digital oput bitrate ok