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Arcam DV89 audio output setting.

Discussion in 'Arcam Owners' Forum' started by Maninblack, Mar 29, 2005.

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  1. Maninblack

    Maninblack
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    I have an Arcam DV 89 connected to a parasound C2 via digital coax for sound.

    In the ARcam 'Audio' setup, I can select.
    2 chanel PCM
    or
    2 Channel Bitstream, or
    6 channel bitstream.

    Is there a correct setting for listening to CD or DVD?

    2 Channel PCM seems bassier for cd listening and 6 channel bitstream has the correct 5.1 encoding, any ideas?
     
  2. mjn

    mjn
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    2 Channel PCM, means the DV89 is decoding to analogue, and bitstream means your amp is decoding to analogue.
     
  3. Maninblack

    Maninblack
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    Thanks for that.

    Should I be using 2 or 6 bitstream?
     
  4. ANDY_DUTTON

    ANDY_DUTTON
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    You should have the DV89 set to 6ch bitsteam for DVD surround playback. When you play a CD it will automatically use 2 ch PCM.

    For best CD sound quality, usually, using the DAC in the DVD player will sound better. To do this connect a pair of analogue interconects to a spare input on your amp (CD would be ideal) then select the CD input instead of the DVD input when listening to CD. This way the amplifier will use the analogue output from the DVD player when playing CD and the 6 ch bitsteam output when playing DVD.

    Regards,
    Andrew
     
  5. Maninblack

    Maninblack
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    I see what you are saying, but when I force the output the sound is different?.
     
  6. Greggles

    Greggles
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    I'm a bit confused. Do the above settings apply to the DV29 player. I was under the impression that the digital output was the same whether the player is set to Bitstream+2ch or Bitstream+6ch and only the analogue outputs are effected. The user guide (for the DV29) states that Bitstream+6ch should only be used when, either:
    you are using the multichannel analogue output to connect to your amplifier (eg for DVD Audio) , or you are using the HDMI output to carry multichannel uncompressed audio (to suitably equiped devices)

    Greg
     
  7. ANDY_DUTTON

    ANDY_DUTTON
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    My appolagies you are correct, you should use the 2ch option not the 6ch one.

    Andrew
     
  8. mjn

    mjn
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    Yes, because when using bitstream, you're using the DACS in the amp, and when using PCM, you're using the DACS in the DVD player.
     
  9. Maninblack

    Maninblack
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    All understood!

    Thanks for everyones input.

    Its now set as 2 channel bitstream and sound for CD's has improved.

    Is it possible films will be better now?
     
  10. mjn

    mjn
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    Only if you use the 5.1 output of the DVD player, into the 5.1 Ext inout of your amp.

    I'm not sure if the DV89 uses different DACS for CD and DVD's though. So you could try and see which you prefer.
     
  11. Greggles

    Greggles
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    Surely if the DVD player is set to Bitstream+2ch the player will down-convert the 5.1 channel analogue output to stereo. If you want to use this connection it must be set to Bitstream+6ch. Similarly, anyone who has inadvertently tried to play CDs through the two channel analogue output while the player is set to Bitstream+6ch will attest to how strange it sounds. The digital (bitstream) output is identical in both cases.

    After some experimentation, I have found that I prefer to use the dacs in the AV8 to those in the DV29 for CD replay.

    Greg
     
  12. mjn

    mjn
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    True, but why would you want to down convert 5.1 to stereo?
     
  13. cmcdonnell

    cmcdonnell
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    I am wondering what I am listenting to then? I have a DV89 connected by co-axial digital to the digital input of my AVR300 and by analogue input to the CD input. The DV89 is set to 6ch bitstream so I always assumed that it was 6ch bitstream (when appropriate) via the digital input when I select DVD on the AVR300 and 2 ch analogue stero when I select the CD input?

    Surely you don't need to change the settings depending if you are watching a DVD or listening to a CD?
     
  14. Greggles

    Greggles
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    There seems to be some confusion here. the term "6 channel bitstream" should read "6 channel PLUS bitstream". The bitstream ie digital output is the same whether the 2 channel or 6 channel option is selected.

    The “2/6 Channel” part relates to the analogue output only. Therefore, if you are connecting the 5.1 analogue output of your DVD player to the appropriate inputs of the amp (ie for DVD audio/sacd), you would use the 6 channel option.

    For stereo (CD) replay, you should use the 2 channel option.
     
  15. cmcdonnell

    cmcdonnell
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    So, does that mean I should use the 2ch Bitstream if I want to watch DVDs and I only listen to standard stereo CDs and not multi channel audio. This would give 2 ch analogue through the CD output and bitstream via the digital coax?

    Or do I need to change the output all the time between DVD and CD?

    Thanks

    Chris
     
  16. Crustyloafer

    Crustyloafer
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    Yep, that's exactly the way to do it, it mean that any material you play will only be output as stereo from the analogue outputs but the digital output will still work as normal.
     
  17. RumNYC

    RumNYC
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    Leave it to 2 unless you want to use the a full analog connectio (i.e. 6 rca's going to the mulitchannel input of reciever/pre). Otherwise for movies, you can use the digital coax connection which will always be multichannel if the source has it. If you are only use 2 channels for analog connection (i.e. CDs) there is no point in setting it to 6ch.

    So to summerise, coax to digitial input of amp assigned to 'DVD'. L+R to input of amp marked CD and setup to 2ch. When watching movies, just select DVD, and when listing to CDs, select CD (with stereo direct).

    I don't actually have DV79 or DV29
     
  18. john R1

    john R1
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    this makes very interesting reading, so i should set mine to 2 channel bitstream untill i play a dvd-audio disc then i should switch back to 6 channel bitstream is this correct
     
  19. cmcdonnell

    cmcdonnell
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    Thanks guys, all is now clear....I'd always had it set to 6ch bitstream as I assumed that was for the surround.

    Chris
     

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