Question about Denon DRA-685 Receiver

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Dolby True HD

I have a Denon 4308ci receiver and am trying to play Dolby TrueHD. I am using a Toshiba HD-XA2 as my source. It is set to bitstream in the s/pdif. I am using a fiber optic cable connection. The receiver will not say that it is TrueHD. What am I missing?

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  • Blu Ray Man Mar 31, 2008

    I have a similiar problem - ive connected my 605 amp to the new Panasonic BD30 Blu-ray player and it mutes the sound when it starts the movie on a True HD disc (Cars). It plays audio fine through the trails and menu page but mutes once the movie starts and this is the part that has me stumped - simply flashes the "Dolby True HD" as though I'd hit a mute button or something. Obviously I hadn't. Any advice?

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Have to use a HDMI 1.3 cable for true HD audio.

Posted on Jan 25, 2009

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I don't think TrueHD can be passed over s/pdif. I think it requires HDMI (1.3) audio or 8 RCA outs/ins.

Posted on Feb 28, 2008

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1 Answer

Hi...i cannot get sound out off my atmos speakers


The other part of the equation is your source; which is not mentioned in your question.
Your player must also be able to decode Dolby TrueHD and the audio output on it set to Bitstream.

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Yamaha RX-V595 Receiver will play Dolby Digital 3/2.1 audio Blu-Ray disc with player set to bitstream but will not play DTS-HD 3/2.1 unless output is set to PCM. Is this an issue with the Yamaha Recei


The optical connection (SPDIF) doesn't have enough bandwidth to transfer DTS-HD audio. To use DTS-HD, you must connect the blue-ray player and receiver via HDMI cable.

Each DTS-HD audio track on blue-ray includes also "normal" DTS audio, which is probably used when you select PCM. Player decodes it and sends decoded (non-HD) audio via optical cable to receiver.

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I con not get the surround sound to work. It only goes into stero mode with the same sound from all the speakers


The AVR-1911 is an A/V receiver with HDMI version 1.4a that can be connected to TVs and other devices that support 3D video such as Blu-ray disc players, game consoles, and set-top boxes. This receiver supports not only Dolby TrueHD, DTS-HD Master Audio and other HD Audio formats but also Dolby Pro Logic IIz for enhanced vertical and horizontal spatial performance at the front, the essence of 3D acoustics complementing the excitement of 3D video. The AVR-1911 comes with numerous other features such as 1080p up-conversion to give you a sharp, high-definition picture from DVD and other standard video sources, and a Glow-key remote control unit that is easy to use in the dark, to maximise your home theatre experience. Check if the RCA connector is properly connected.. Sometimes the problem is in the CD or DVD itself. Try to go to www.denon.com. ty

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1 Answer

I have a PS3 hooked up via HDMI to my Yamaha RX-V465.When I play a blueray disc the signal info shows PCM.Shouldn't it show Dolby Digital or True HD?


Your PS3 probably has a setting for what digital bitstream it produces. Check it out. Dolby Digital is probably what you want.

Dec 27, 2009 | Yamaha Rx-v465/rxv465 Home Theater...

1 Answer

No DTS-HDMA or Dolby TrueHD shown on display


DTS-HDMA and Dolby TrueHD cannot be passed to your receiver via bitstream on the PS3. DTS-HDMA cannot be decoded either so you're out of luck there.
Dolby TrueHD can be decoded internally on the PS3 assuming your firmware is up to date. Set the Blu-ray HDMI output to PCM and you can then pass it to your receiver.
If this doesnt work, do a system update on your PS3.

Jan 24, 2009 | Onkyo TX-SR606 Receiver

1 Answer

No output of hd audio


Change audio settings on PS3 to PCM not bitstream

Jul 26, 2008 | Denon AVR 3808Ci Receiver

1 Answer

No Audio when I play Blu-Ray discs with Dolby TrueHD


For dolby digital to work you have to have the optical or coax cable hooked up to the reciever ,The HDMI cable is for digital video and audio output but does not support dolby digital out the cable into your reciever , so just turn off the dolby digital on your reciever and you should hear the sound.
here is more info

Dolby TrueHD is an advanced lossless multi-channel audio codec developed by Dolby Laboratories which is intended primarily for high-definition home-entertainment equipment such as Blu-ray Disc. It is the successor to the AC-3 Dolby Digital surround sound codec which was used as the audio standard for DVD discs. In this application, Dolby TrueHD competes with DTS-HD Master Audio, another lossless codec from Digital Theater System.
Dolby TrueHD uses Meridian Lossless Packing (MLP) as its mathematical basis for compressing audio samples. MLP was used on the earlier DVD-Audio format, but details of TrueHD and DVD-Audio differ substantially. A Dolby TrueHD bitstream can carry up to 14 discrete sound channels. Sample depths up to 24 bits/sample and audio sample rates up to 192 kHz are supported. Like the more common legacy codec Dolby Digital, TrueHD bitstreams carry program metadata. Metadata is separate from the coding format and compressed audio samples, but stores relevant information about the audio waveform. For example, dialog normalization and Dynamic range compression are controlled by metadata embedded in the TrueHD bitstream.

May 19, 2008 | Marantz SR-7200 Receiver

1 Answer

True HD - biggest secret


Are you playing a TrueHD format disc? Just like DTS 5.1 or any other format if your disc isnt coded in TRUEHD then your not going to get it. DTS or other formats cannot be "converted" to TrueHD like the video portion of a standard def disc. At this point there arent alot of TrueHD discs out but be paitent, this may change. Or not, due to the fact there are other "lossless" formats that may be more widely adopted. Sort of like DTS and THX were when DVD first came out. Hope this helps.

Mar 31, 2008 | Onkyo TX-SR605 Receiver

6 Answers

Source always PCM, can't get Dolby-D


PCM is standard when using HDMI cables, you are passing an already decoded audio signal to the receiver and it outputs the sound and does nothing more. The reciever calls this PCM, your PS3, when pressing select should show that it is decoding the dolby digital HD. There is no quality difference in the two. PCM is the same because it is un compressed audio. So when using HDMI, no matter the signal that the movie or music is playing, wether it be dolby or DTS, you will see PCM when using HDMI.

Nov 24, 2007 | Onkyo TX-SR605 Receiver

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