No sound when connecting fiber optic cable

Discussion in 'Beginners, General Questions' started by WynMa, May 2, 2003.

  1. WynMa

    WynMa Auditioning

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    I purchased the 'monster digital interlink lightspeed 200 ultra-high resolution fiber optic cable' to connect from my Panasonic DVD CP-67 to my Harmon Kardon AVR525 receiver. When I connect the cable (yes, I made sure that I am using the right outlets), I do not get any sound. Any ideas?
     
  2. Mike_J_D

    Mike_J_D Stunt Coordinator

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    Well I'm not that familiar with H/K equipment. But I'll give you a few ideas. Did you tell the reciever you are using an optical input? You have to tell the reciever what digital inputs you are using. Also make sure your DVD player is setup for the optical cable also. If neither of these work than I don't know what to tell you. Good luck and I hope this helps. If not sorry. Mike
     
  3. Jack Briggs

    Jack Briggs Executive Producer

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    Mike said pretty much what I would have. Also, the optical cable isn't being pinched or bent is it?
     
  4. WynMa

    WynMa Auditioning

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    No, optical cable is not bent or pinched. So, I need to go to the menu options of my receiver and set it to receive optical as input? I will give that a try and let you know how it turns out. Thank you!!
     
  5. Bob McElfresh

    Bob McElfresh Producer

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    Dont forget that you need to go to the DVD player menu and tell it you want to output Dolby Digital on the digital ports instead of "PCM" or "Bitstream". (PCM/Bitstream are common names for the digital signals that CD players often put out. These are different from Dolby Digital encoded signals.)
     
  6. WynMa

    WynMa Auditioning

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    Thanks for the tip Bob. I was trying to figure out why my rear speakers were not getting any sound out of them. Thanks again!!
     
  7. SeanA

    SeanA Second Unit

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    WynMa,

    Don't quote me on this, but I think you should be able to see the light output from the cable's output end if it is getting the audio signal from your DVD player.

    I am having a similar problem with my Samsung SIR-T151 optical connection to my receiver. At first, I thought my STB was faulty but I have since proven the receiver to be defective. My receiver has 3 optical inputs and only one works... the one I've had my DVD player connected to for the past 15 months. All I did to confirm that the defect was in the receiver was to move my DVD optical cable connection to the other two optical inputs on the receiver. I could get no sound from either of these two inputs, but the optical input I was originally using with the DVD player works fine.

     
  8. Bob McElfresh

    Bob McElfresh Producer

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    Before the DD standard emerged, higher-end CD players had an optical output. This was a digital signal and the sound was encoded in something called PCM "Pulse Code Modulation".

    Many receivers/processors can still handle these signals.

    DVD players that can also play audio CD's can produce 2 different kinds of optical signals:

    - PCM (stereo only)
    - Dolby Digital (mono - 6.1)

    (Oh, I think there is a new encoding for SACD/HDCD audio as well, but let's ignore that for now.)

     
  9. James Gillespie

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    Did you also remove the little dust covers from the ends of the cable? This is often overlooked by users of this board.
     
  10. SeanA

    SeanA Second Unit

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    James,

    Good tip !!! That would definitely screw things up.
     
  11. Jason_Bl

    Jason_Bl Auditioning

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    ok... here's an interesting question for the group--- my setup works find in dolby digital... but my panasonic DVD-RV30 doesn't transmit the DTS signat (in DD, there is light in the optical cable, but in DTS... nothing)

    Any thoughts?
     
  12. Cees Alons

    Cees Alons Moderator
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    Cees Alons
    Yes a few, Jason. [​IMG] Welcome to the forum!

    You need to set your DVD to "DTS enabled", no matter how it's called, in the settings. You need to have a DVD with a DTS sound track (OK, sorry, that sounds silly), you need to set the DVD's menue to DTS (when it's playing). You need to set your receiver/decoder to DTS.

    If you checked all these points (if necessary consult the manuals of your DVD and receiver, look for settings and/or switches that may apply) and it still doesn't work... well, I won't eat my tie, but I would be amazed.

    Cees
     
  13. Jason_Bl

    Jason_Bl Auditioning

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    I'm not sure how familiar you are with Panasonic DVDs... but there is an on screen menu with options (like camera angle, subtitles)... on of these is a sound menu which shows DD and DTS and 2.0surround. Is this what you mean by "enabling" the DTS? Or is it a switch I need to throw?
     
  14. Jeff Gatie

    Jeff Gatie Lead Actor

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    Jason,

    The selection is usually in the same menu that let's you select the aspect ration of your TV. It is called the setup menu and sometimes is not available with a DVD in the drive. You want to look for a selection that mentions bitstream, DD and DTS. It would definitely not be in with camera angles or subtitles because those are dependent on the DVD you are playing.

    Check your manual for the player's setup menu.

    Edit - I checked the manual online. You have to press 'Setup' to show menus, then press '>' to select the 'audio' menu. From there you have to turn 'DTS Digital Surround' to 'Bitstream'. Save your settings and you're good to go.
     
  15. Bill Kane

    Bill Kane Screenwriter

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    no, you need to scroll thru the set-up menues to find AUDIO where you are given options to select:

    * DD -- BITSTREAM
    * Dts - BITSTREAM

    As I recall with my old RP-30, I also selected PCM DownConversion to "Yes"

    As you know, one also must remote-select Dts on the actual DVD movie disk's Audio or Language set-up before playing the movie.
     
  16. JohnnyG

    JohnnyG Screenwriter

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    Bill Kane's information is correct.

    Bob had the right idea, but if your receiver has a Dolby Digital and/or DTS decoder built-in, BITSTREAM is actually the correct setting. This will send the 'raw' audio stream to the receiver for decoding. Also, audio CDs will never output Dolby Digital from a DVD player no matter how you configure it - it would always be output as PCM.
     
  17. JohnnyG

    JohnnyG Screenwriter

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    As for WynMa's original question, select DVD on the receiver, then press 'AVR', then 'Digital' on the H/K remote and use up/down on the cursor pad to change to the optical input you connected to ('Optical 1', for example), then press 'Set' in the middle of the cursor pad.
     
  18. Jason_Bl

    Jason_Bl Auditioning

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    Thanks everyone for your info... I will try this in the morning (my wife would kick my butt if I powered everything up now....)
     

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