From 5.1 to 6.1 or 7.1?

Discussion in 'Archived Threads 2001-2004' started by Cameron_Peck, Sep 21, 2002.

  1. Cameron_Peck

    Cameron_Peck Stunt Coordinator

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    How accurately can a 7.1 receiver or pre/pro recreate a 6.1 soundtrack? I am trying to decide which way to go with my system. Is there 7.1 material coming? What about 8.1?
    If 6.1 was developed to improve rear sound image, how can a 7.1 system (with 2 rear speakers) recreate this better than a 5.1 system? I’m sure that it improves pans from front to back, but doesn’t this still leave a hole in the rear? I don’t want to buy a piece of hardware 2 or 3 months before a new format comes out.
     
  2. Cameron_Peck

    Cameron_Peck Stunt Coordinator

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    Any thoughts?
     
  3. Frank Zimkas

    Frank Zimkas Supporting Actor

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    I have never had a 6.1 setup, I went from 5.1 straight to 7.1 and really like the effect.
    My wife recently bought the Blade II DVD for me which contains the DTS-ES track and I sounds great on my system! As far as I know there are no DVD's out that contain a true 7.1 soundtrack, but don't let that stop you. IMHO everything sounds better in 7.1 compared to 5.1.
     
  4. Holger

    Holger Stunt Coordinator

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    hi cameron,


    don't let the number of power amps or speakers fool you. if you want a real 7.1 system you only will get it with the harman kardon avr 8000 or a lexicon pre/pro.

    it is sad to see, that the industry nearly 100% describes
    the term *7.1* wrong. a receiver like the denon avr 3802 for example, is a 6.1 receiver regardless of its 7 build-in amps. the left and right back-surround having exactly the same (mono)signal, therefore it MUST be considered as 6.1
    unit and system.

    only, i repeat, only if the two back-surrounds running in stereo it can be spoken of a 7.1 system. and the only two companies which offer such a technique are harman kardon and lexicon (with exception of the meridian pre/pros).




    regards, holger
     
  5. Wes

    Wes Screenwriter

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  6. Kevin C Brown

    Kevin C Brown Producer

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    THX Ultra2 also has "stereo" rears.

    And, even for "6.1" soundtracks, 2 rears (even if both are mono) are are usually preferred to 1 to "spread" the rear soundfield out so as to not be too localizeable to just 1 speaker.
     
  7. Holger

    Holger Stunt Coordinator

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    hi wes,



    i don't know how exactly those lexicon guys doing the job on logic7 decoding and i assume not much persons in the av business do either. if they would, and i'm talking about design engineers and people like that, then why is no one coming even close to lexicons 7.1 decoding scheme? and why is a highly praised and well known high-end manufacturer like mark levinson for example, so mad about to have their newest pre/pro logic7 certified instead of developing something similar to logic7 by their own?

    what i know is that there is a huge difference between dolby ex/dts es and logic7. only when a source was specially encoded in ex/es it will sound properly when played back in those modes with collapsing the (side)surrounds in the (back)surround(s). regardless what kind of material i ever watched/listened to, be it a 2channel analog signal or a 5.1/6.1 digital signal it always worked perfect - at least to my ears - in the logic7 mode.

    and logic7 is the the only surround mode to my knowledge, which is capable to steer the four surrounds completely independent and pan a specific sound from one surround speaker to whatever another surround speaker in all directions you can think of.

    a word to kevin: thx ultra2 do NOT work with stereo surrounds rather then putting a decorrelated signal in the two back surrounds. this is the same technique that thx always used for their surround speakers in the dolby surround era and helps to create a wider and more spacious surround field out of a mono signal. nevertheless, also in thx ultra2, the back surrounds stays mono although the signal is spreaded out trough phase shifts.




    regards, holger
     
  8. Kevin C Brown

    Kevin C Brown Producer

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