Question about Kenwood VR-505 Receiver

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Dolby Digital Has Stopped Working

My reciever suddenly stopped playing the dolby digital track on DVDs. The sound comes out in stereo mode. I have a kenwood vr505 reciever.
I tried a DTS DVD and the reciever recognized the audio track and played it in proper DTS mode. When I tried the dolby digital track, it reverted to straight stereo.
All the speakers are working correctly, I ran the setup and they all play properly.
I tried multiple discs, all with the same result. I tried connecting the DVD player with optical and coxial cable, no difference.
I don't want to have to pick up a new receiver.... Any thoughts?

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There isn't such a button on the reciever... at least if there is, it's not obvious. Where would such a button be. There is a small red LED light that comes on when dolby digital is working. That's about it. There is no mention of THX anywhere on the receiver

Posted on Jan 11, 2008

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I sthe thx dobly digtal button on off or on auto ?

Posted on Jan 10, 2008


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Right now my reciever will only play with two speakers (L and R). How do I get the 5.1 DTS back?

Are you using single digital coaxial or optical digital or the stereo RCA cable.
You might have that buttons on the remote for surround,2channel,3channel or 5.1 channel. orGo to the DVD's setup menu and click on "Audio Setup" or on "Languages" if there is no Audio Setup option and choose "Dolby Digital 5.1." (If you have a5.1, 6.1 or 7.1 system select "Dolby Digital EX" if it is an available option.) Depending on the age of the disc, the "Audio Setup" on the DVD menu may give you several choices: "5.1 Channel Surround Sound" or "Stereo Playback." If it's an old DVD, it might even say Dolby AC-3 (the professional designation for Dolby Digital 5.1). New DVDs may offer "Dolby Digital 5.1" and "Dolby Digital 2.0," the latter being stereo. Some of the disc menus offer only "Surround Sound" or "Stereo" options.

Aug 14, 2009 | Yamaha RX-V463 Receiver

1 Answer

Dolby digital

Dolby Digital includes several similar technologies, which include Dolby Digital, Dolby Digital EX, Dolby Digital Live, Dolby Digital Surround EX, Dolby Digital Plus, and Dolby TrueHD.

Dolby Digital, or AC-3, is the common version containing up to six discrete channels of sound. The most elaborate mode in common usage involves five channels for normal-range speakers (20 Hz – 20,000 Hz) (right front, center, left front, right rear and left rear) and one channel (20 Hz – 120 Hz allotted audio) for the subwoofer driven low-frequency effects. Mono and stereo modes are also supported. AC-3 supports audio sample-rates up to 48 kHz. Batman Returns was the first film to use Dolby Digital technology when it premiered in theaters in Summer 1992. The Laserdisc version of Clear and Present Danger featured the first Home theater Dolby Digital mix in 1995.

This codec has several aliases, which are different names for the same codec:

* Dolby Digital (promotional name, not accepted by the ATSC)
* DD (an abbreviation of above, often combined with channel count: DD 5.1)
* Dolby Surround AC-3 Digital (second promotional name, as seen on early film releases and on home audio equipment until about 1995/1996)
* Dolby Stereo Digital (first promotional name, as seen on early releases, also seen on True Lies LaserDisc)
* Dolby SR-Digital (when the recording incorporates a Dolby SR-format recording for compatibility)
* SR-D (an abbreviation of above)
* Audio Coding 3 (relates to the bitstream format of Dolby Digital)
* AC-3 (an abbreviation of above)
* Audio Codec 3, Advanced Codec 3, Acoustic Coder 3 (These are backronyms. However, Adaptive Transform Acoustic Coding 3, or ATRAC3, is a separate format developed by Sony)
* ATSC A/52 (name of the standard, current version is A/52 Rev. B)

Jun 16, 2009 | Ahead Software Computers & Internet

1 Answer

Wil not switch to dolby digital mode

You must use optical sound wire in order to reprduce dolby digital......You should have 2inputs on the back for the signal must be broadcasted in dolby digital.Such as HBO,SHOWTIME....they will tell you before the show comes on whether or not the movie or event is being broadcasted in dolby digital.Your unit will automatically change to dolbly digital once the show or event starts.Just make sure your input on video1,2,or3 is set to optical1 or 2.Just press the "Audio Sel" on the remote to change the audio source.But make sure the optical wire is connected first.....And just incase,make sure you are sending a dolby digital source to the unit from the sat reciever,cable box,playstation2.....make sure the dolby digital/optical option is on.You can find out what audio options you have in the menu screen.........or the redneck way.look on the back of the sat reciever/cablebox/playstaion2 ect...for a red laser light comming from these units.........i hope tht helps.

Feb 20, 2009 | Onkyo HTR500 Receiver

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NAD 775 will not play surround sound from XBOX

try to calibrate the speakers from audessy rom menu,i did it and it lokes like it just needed to register all the channels,hope it helps.

Jan 29, 2009 | NAD T753 Receiver

1 Answer

No dolby digitaL ON BLU-RAY FIMLS played thro a ps3,

prologic is a form of dolby digital, the 4.0 or 5.1 (versions I and II respectively) to be exact. the type of dolby version is determined by the source disk. the reciever may expand a dolby digital signal into 7.1 but it is actually a 5.1 standard, as is prologicII

Nov 28, 2008 | Denon AVR-3801 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

Toshiba HD-A30 won't play digital sound with HD DVDs

Try checking your audio output in the setup screen of dvd player. Try setting Digital Out HDMI to Auto, if it isn't already. See if that helps.

Dec 28, 2007 | Toshiba HD-A30 HD-DVD Player

1 Answer

RCA RT2280 surround sound mode button wont select 5.1 dolby digital mode.

I had the same problem and this is what I did to fix it. Assuming that all of your equipment is powered on, (tv, blu-ray/dvd, rca receiver) you'll need to go into your dvd players audio menu and select the dolby digital audio.
Once you do this, the digital signal is sent to your receiver from the dvd. The receiver should automatically set itself to the dolby digital preset. If it doesn't, press the surround button until you reach it. I found part of this information here. And the rest was personal experience.
Also, it depends on if the disc format is in dolby 5.1. I hope this helps you.

Dec 18, 2007 | RCA RT2280 System

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Yamaha htr-5240 dolby digital problem

Is there switch from dolby pro logic/ surround / or analog/ digital?

Sep 27, 2007 | Yamaha HTR-5240 Receiver

2 Answers

Problem with Dolby Digital mode

If it is a new DVD that may be a problem, as signal changes may be frustrating this old machine... but it is likely the cabling from the DVD player to the reciever. Are you on the right channels/settings? is the optical cable and digital cable recieving digital output from your DVD player? Try changing those settings and you should be in good shape Thanks! good luck!

Jul 22, 2007 | Yamaha RX-V3300 Receiver

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