I feel silly asking this question but

Discussion in 'Archived Threads 2001-2004' started by Tim Campbell, Mar 27, 2002.

  1. Tim Campbell

    Tim Campbell Agent

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    I have seen some DVD plyers that have 5.1 channel inputs. I have also seen the same inputs on REceivers. I assume the receiver ones are for hooking up amplifiers (am I right?)

    What are the inputs on a DVD for?
     
  2. Vince Maskeeper

    Vince Maskeeper Producer

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    Tim,
    Ok there are actually 3 things here, and I'll do my best to explain:
    6 channel outputs on DVD players:
    These are OUTPUTS, not inputs as your post alluded.
    In the early days of dolby digital, many budget receivers did not include onboard DD decoding chips, instead these receivers offered 6 channel analog inputs allowing them to be used with DVD players that did the DD/DTS decoding internally.
    So these DVD players have internal decoders for DD and/or DTS turn the 6 channel signal into analog and pass the already decoded 6 channel signal via 6 output jacks on the player.
    These 6 channel outputs are also useful on DVD-A or SACD players, as most modern receivers don't have internal decoders for these formats from a digital stream. To do DVD-A and SACD, you have to have a receiver with 6 channel inputs and connect the 6 analog lines from the player to the receiver.
    Technically speaking, you could also connect these 6 channel outs on the dvd player direct to amplifiers and bypass a preamp if you chose (as these players tend to have internal level controls and other preamp features).
    6 channel inputs on receivers:
    Well, as stated above- some receivers offer 6 channel inputs to allow connections of outboard 6 channel devices for which they might not offer intenal convertors.
    Older receivers didn have DD or DTS conversion built in- so 6 channel input allowed you to still get DD/DTS if your dvd player had internal conversion available. Also, moder receivers are unable to internally convert DVD-A or SACD signals, so they have 6 channel input to allow connection of SACD or DVDA players with internal conversion.
    6 channel output on receivers:
    As you alluded in your post- some receiver have 6 channel preamp OUTPUTS to allw you to bypass the internal amplifiers and feed the 6 channel signals to your own amps.
    This allows you to only use the preamp and processing stages of your receiver- and use higher power or higher grade amps, while still getting conversion and switching functions of your receiver.
    Hope that helped.
    -V
     
  3. Tim Campbell

    Tim Campbell Agent

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    Vince,

    That explained everything I wanted to know!! Thank you very much
     
  4. Michael Caicedo

    Michael Caicedo Second Unit

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    Great breakdown Vince, this might go well in the "What every newbie should know" thread.
     
  5. Vince Maskeeper

    Vince Maskeeper Producer

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    Mike,

    Good point, have edited it and added it to that thread.

    -vince
     
  6. Tim Campbell

    Tim Campbell Agent

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    See I guess there is no stupid question, just the Morons who ask them!!! He He

    He guys one other thing. In the newbie section there is a 7.1 explanation. It said that there is no true 7.1 for the home yet. Isnt Onkyo's tx-ds989 a true 7.1?
     
  7. Vince Maskeeper

    Vince Maskeeper Producer

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  8. Tim Campbell

    Tim Campbell Agent

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    So there is no true 7.1 because no Discs are incoded in 7.1?
     
  9. Vince Maskeeper

    Vince Maskeeper Producer

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  10. Scott Merryfield

    Scott Merryfield Executive Producer

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    There is one 6.1 channel discrete format -- DTS ES Discrete. The rear center channel is encoded as a separate channel.
     

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