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Best connections?!

Discussion in 'Cables & Switches' started by Trick, Jul 23, 2004.

  1. Trick

    Trick
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    Ive read so many articles over the last few months and im still not sure what is supposed to be the best cabling connections:

    S-Video - I was led to believe this offers the best sound and picture using the 3 cables yellow,red and white

    RGB Scart - High quality scart cable using an RGB scart socket

    Coaxial - Pants.

    Am i missing any?

    Need to make sure my system is set up for the optimal settings.
     
  2. Mylo

    Mylo
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    S-video is picture only, it carries no audio.
    Red & White are stereo audio and Yellow is composite video.

    A proper RGB scart cable is picture only as well. You need a fully wired scart cable to do RGB and audio.

    Component video (red, green and blue cables) offers the highest picture quality if available.
     
  3. eviljohn2

    eviljohn2
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    Ignoring any digital feeds and concentrating entirely on video signals and the connectors
    Lowest quality to highest quality is:

    * RF (used for carrying old fashioned television signals).
    * Composite (carried by a single conductor and ground, denoted by a yellow RCA plug)
    * S-Video (splits into chrominance and luminance, denoted by a mini-DIN plug)
    * RGB (splits picture into the three components as used by the tubes within a CRT television, carried over scart leads)
    * Component (splits picture in the three components as stored on DVD, carried over 3 coaxial leads with RCA connections).

    The final 2 are potentially switchable unless you're progressive scan capable equipment in which case component should be superior.

    There's also the RGBVH signal as used on computers but that's rarely relevant for home cinema.
    :)
     
  4. Trick

    Trick
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    ok and so for audio?

    My dvd outputs:

    S-video out; composite video out; two Scarts (one RGB); six outputs for 5.1-channel decoded sound; stereo audio output; optical/coaxial digital audio outputs; headphone jack; component video outputs

    Is optical the best?
     
  5. eviljohn2

    eviljohn2
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    It depends what equipment you're connecting it all up to.

    Ideally I think you want to use component video into your display for video, and electrical digital into your AV amplifier for sound.
     
  6. andy9

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    is optical digital or co ax digital best??
     
  7. Jeff

    Jeff
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    SDI :)
     
  8. MarkE19

    MarkE19
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    Optical or coax are about the same, but coax is slightly better on short lengths and optical better for >10m lengths.
    If useing the DVD player for CD's then you will probably find you get better stereo via a pair of phono leads from the stereo audio outs as well as the above for DVD sound.
    If your screen has component inputs then use component, otherwise RGB scart is the best quality video connection.

    All the above connections should give you a good picture & sound, but this will all be dependent on the quality of the leads used. Don't spend an absolute fortune on leads (unless useing high end gear, and even then its debatable as to how much you should spend), but don't go for really cheap either.

    Mark.
     
  9. Ian J

    Ian J
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    Playing CD's via my Denon AVC 10Se sounds infinitely better using a digital connection than via the analogue outputs. I am not sure why though
     
  10. eviljohn2

    eviljohn2
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    Your Denon has very high quality DACs in which is probably why it sounds better. You don't mention what player you use though.

    It depends where the digital to analogue conversion is done, ideally it should be done through the best DACs which can be either in the amp or the player.

    DVD players generally have fairly poor audio DACs so will often sound better if they don't perform the conversion but just act as a transport.
     
  11. probeski

    probeski
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    I'm from Australia and scart devices have only recently become widely available on our market. Can you explain why Scart RGB is inferior to YPbPr? Apparently DVDs are encoded in YUV but apart from this, assuming the scart RGB and YPbPr cables are high quality, why is one better than the other for progressive material.
     
  12. MarkE19

    MarkE19
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    Simply because the scart RGB signal is not 'progressive scan', but only interlaced.
    If only playing from an interlaced DVD player then there will be very little, if any difference between RGB & YUV.

    Mark.
     
  13. probeski

    probeski
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    Thanks, i thought that was the case i just needed confirmation. I suppose RGBHV is the only RGB type that supports progressive then.
     
  14. eviljohn2

    eviljohn2
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    Correct.

    As an aside, DVD is encoded as component whilst a TV tube is driven by an RGB signal. The reason only component can carry progressive scan is because the processing has to be done to the signal as it was on the DVD rather than as the TV tube needs to receive it.
     
  15. probeski

    probeski
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    So what about Scart RGB STB's?
     
  16. MarkE19

    MarkE19
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    You can only get progressive scan from a DVD player and only via YUV component. Satellite & Cable STB's etc can not output progressive scan.

    Mark.
     
  17. probeski

    probeski
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    Thanks for the info. I'm getting a HD STB with either RGBHV (DSUB) or YPrPb output to feed into a plasma. Which one do you think will give the best progressive quality?
     
  18. hornydragon

    hornydragon
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    probably RGBHV depending on the plasma.
     
  19. probeski

    probeski
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    I want the Pinoneer 50mxe1, why does it depend on the plasma? I'd imagine that Dsub might be cheaper in price than high quality YPrPb, is this true and can you recommend any good quality RGBH+V connections? Is there a difference in quality when changing to BNCs (into Plasma) or should I keep the cable as the 15 pin Dsub?
     
  20. hornydragon

    hornydragon
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    hmm never compared RGBHV BNC and D-sub, just used which ever was easier. If the Box has D-sub out and plasma has D-sub in (i think it does) use that.
     
  21. probeski

    probeski
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    Who makes good quality Dsub and recommendations (i don't mind paying about 40 pounds, cheers.
     
  22. hornydragon

    hornydragon
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    Vandamme Red series are good as are bettercables
     

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