Can I simulate THX-EX or DTS-ES with a DD / DTS receiver and a DPL receiver?

Discussion in 'Archived Threads 2001-2004' started by Javier_Huerta, May 25, 2002.

  1. Javier_Huerta

    Javier_Huerta Supporting Actor

    Joined:
    Mar 9, 2002
    Messages:
    619
    Likes Received:
    0
    I read David Ranada (?) once did it, and many people thought it wasn't worth it. The idea is simple. Run the signal through a Dolby Digital / DTS receiver, then take the rears output and decode it with Dolby Pro-Logic 3 mode. That way you end up with 3 front channels (discrete) and 3 rear channels (matrix decoded).

    I doubt that's the way THX-EX is recorded, but I guess I could try it if it's worth it.

    Thanks!

    Javier.
     
  2. RichardMA

    RichardMA Second Unit

    Joined:
    Apr 16, 2002
    Messages:
    446
    Likes Received:
    0
    If you end up with the L-R surrounds being matrixed
    instead of discrete, that's a point against trying it.
    Three mediocre channels in place of two good ones is
    not an equitable trade off. But it won't hurt
    to experiment.
     
  3. Dan Hitchman

    Dan Hitchman Cinematographer

    Joined:
    Jun 11, 1999
    Messages:
    2,713
    Likes Received:
    0
    It just does not compare to real DTS-ES Discrete, DTS-ES matrix, and Dolby Digital EX matrix decoding. Not as precise.

    Dan
     
  4. Javier_Huerta

    Javier_Huerta Supporting Actor

    Joined:
    Mar 9, 2002
    Messages:
    619
    Likes Received:
    0
    Thanks for your thoughts, they do make a lot of sense.

    What do you think about adding extra speakers to the rear without the system being 6.1? Does that help or destroy the soundstaging? I did a search, and I am surprised there aren't many opinions about doing such a thing.

    Thanks again!
     
  5. Steve K.H.

    Steve K.H. Supporting Actor

    Joined:
    Jan 11, 2002
    Messages:
    719
    Likes Received:
    0
     
  6. Wes

    Wes Screenwriter

    Joined:
    Sep 30, 1997
    Messages:
    1,190
    Likes Received:
    1
    Location:
    Utah USA
    Real Name:
    Wes Peterson
    Well, I have both! I have a PL receiver processing my EX/ES channels and I have 4 surrounds (2 Left and 2 right) as well as my 2 EX/ES speakers and I love the results! Don't be afraid to try something new!
    See my site for more details!My Theater
    Wes
     
  7. Javier_Huerta

    Javier_Huerta Supporting Actor

    Joined:
    Mar 9, 2002
    Messages:
    619
    Likes Received:
    0
    Wes, thanks so much for the link, it'll be very useful. I'll try a couple of things. After all, I think the most important thing of all is for me to like the system, no? [​IMG]
     
  8. Jeff Hipps

    Jeff Hipps Stunt Coordinator

    Joined:
    Feb 2, 1999
    Messages:
    194
    Likes Received:
    0
    Javier:

    What you are describing is exactly the way Dolby Digital Surround EX is decoded in the movie theater. Although DTS ES Matrix uses a slighlty different decoding matrix, use of a pro logic decoder was officially sanctioned by DTS when the first receivers with DTS-ES decode capability came on the market. Only DTS-ES Discrete cannot be decoded by this method. However, DTS-ES Discrete is a redundant system and the rear center channel information is also matrix encoded, so it can be recovered through the use of a pro logic type decoder.

    Jeff Hipps
    Sherwood America
     
  9. Javier_Huerta

    Javier_Huerta Supporting Actor

    Joined:
    Mar 9, 2002
    Messages:
    619
    Likes Received:
    0
    Jeff, thank you so much for your answer. It was most helpful! Do you know if Dolby's scheme is similar to that of DTS? I seem to remember it isn't, but it won't hurt to experiment, I'm sure.

    Javier.
     
  10. derek

    derek Second Unit

    Joined:
    Dec 20, 1998
    Messages:
    494
    Likes Received:
    0
    See my faq on home ex setup. [​IMG]
     
  11. Javier_Huerta

    Javier_Huerta Supporting Actor

    Joined:
    Mar 9, 2002
    Messages:
    619
    Likes Received:
    0
    Thanks Derek! Much appreciated! [​IMG]
     
  12. Wes

    Wes Screenwriter

    Joined:
    Sep 30, 1997
    Messages:
    1,190
    Likes Received:
    1
    Location:
    Utah USA
    Real Name:
    Wes Peterson
    Derek, I have noticed all of your links for homebrew EX setups are no longer working! Just thought you might like to know.

    Wes
     
  13. JerryW

    JerryW Supporting Actor

    Joined:
    Feb 7, 2001
    Messages:
    640
    Likes Received:
    0
     
  14. Arthur S

    Arthur S Cinematographer

    Joined:
    Jul 2, 1999
    Messages:
    2,568
    Likes Received:
    0
    Javier

    I read a David Ranada article and came away thinking he thought it was a good thing to do if you had an extra ProLogic receiver laying around. I basically ignored it for a year or more then decided I wanted to hear for myself what it had to offer. Set up was pretty simple with help from some of the people who have already responded to you. I had another speaker to put behind the couch.

    Let me tell you, I played Gladiator and haven't considered changing back to 5.1. The only think I have to remember is when I play a VHS or watch TV in stereo, I have to change the mode of the DPL receiver to stereo from ProLogic.

    For me this has proven to be an excellent use of equipment that was not being used and isn't worth much in the market place.

    I can get all the volume I want out of this set-up and have taken a load off my main receiver.

    Artie
     
  15. Aaron Garman

    Aaron Garman Second Unit

    Joined:
    Oct 23, 2001
    Messages:
    382
    Likes Received:
    0
    Hello all. I've thought about doing this myself. However, I have the Yamaha htr-5280 that has the EX/ES decoding but with no output for the surround back channel. If I engage this decoding along with this quasi-6.1 setup, will it yield better results? Thanks.

    Aaron Garman
     
  16. Wes

    Wes Screenwriter

    Joined:
    Sep 30, 1997
    Messages:
    1,190
    Likes Received:
    1
    Location:
    Utah USA
    Real Name:
    Wes Peterson
    Aaron, I looked up a site about your receiver and came up with this!
     
  17. AVspec

    AVspec Supporting Actor

    Joined:
    Sep 7, 1998
    Messages:
    515
    Likes Received:
    0
    Location:
    South Eastern PA
    Real Name:
    Mark
  18. Aaron Garman

    Aaron Garman Second Unit

    Joined:
    Oct 23, 2001
    Messages:
    382
    Likes Received:
    0
    Hello all. Actually the dumb thing about this unit is that there is NO PREAMP out for the back surround. If I had that, I'd be all set. Grrrrrrr.

    Aaron Garman
     
  19. Javier_Huerta

    Javier_Huerta Supporting Actor

    Joined:
    Mar 9, 2002
    Messages:
    619
    Likes Received:
    0
    Arthur, thanks for your insights! I'll definitely try and set up my system just like you described. I'm pretty much convinced by now to try it.
    I just need to get some extra speakers for the center channel [​IMG]
     

Share This Page