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Is this a Barmy Idea ?

Discussion in 'Projectors, Screens & Video Processors' started by ukfatboy, Sep 9, 2004.

  1. ukfatboy

    ukfatboy
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    Greetings all !

    Some of you might know that I am currently in the painfull process of getting my first projector. More or less settled on Themscene H77/ benq 8700 or infocus 7205, all dlp you might note.

    I have always had the intention of running the projector off my HTPC off dvi.

    As I was thinking about the position last night a mad idea crossed my mind.

    Its now possible to run 2 graphics cards or a dual dvi out card in the pc. So would there be any benefit in running 2 projectors ( both out putting the same image ) at the same time ?

    I assume that brightness etc could be increased etc ?

    Obviously I could then consider 2 cheaper projectors to make up the image and even consider high def capable LCD projectors ?

    Am I Barking :rotfl:
     
  2. gandley

    gandley
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    BARK BARK

    it is possible but is a knightmare to set up, and would more than likley be a pro install.

    Then theres 2 lots of PJ noise.+the PC.

    Have to say since HDMI whats the point of a HTPC.

    Anyhow good luck if you try it. 2 lots of bulbs regular calibration to sync. rather u than me LOL
     
  3. UrbanT

    UrbanT
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    Woooooofff!

    Its hard enough getting your iamge to fit exactly on a screen, never mind trying to overlay 2 images on top of each other, especially as they would be projected from 2 slightly different angles. I'm no expert by any means but this does sound a little crazy :zonked:
     
  4. Peter Parker

    Peter Parker
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    'Stacking' is tricky but possible - it's normaly done with CRTs when a larger image is needed, but a single CRT can't produce enough lumens.

    Your idea is another step - stacking usualy involves a single output to two projectors, but you're trying two with different outputs (2 x XGA): 2048 x 768 = 2.6:1. With some scaling, I guess you could keep a constant height, and vary the width like in a proper cinema. :)

    Unfortunately I don't think you'de be able to run two graphics cards in the same PC though.

    Nice idea, but a pig to produce. Let us know how you get on. :D

    Gary.
     
  5. ukfatboy

    ukfatboy
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    Interesting 2 different opinions !

    I think the HTPC debate is well discussed on the forum but I can tell you that my pc is silent and produces a better picture than my TAG dvd player !

    It is in fact possible to use 2 graphic cards but not easy ! alternatively there are a number of graphic cards that have 2 dvi outputs on one card which would seem to be a easier starting point !

    Anybody else have any comments ?
     
  6. RTFM

    RTFM
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    In the past I have stacked two Sim2 Domino projectors to good effect.
    Alignment was easy with the optical lens shift and the remote control zoom.
    I could only feed 2 S-Video signals from a Pioneer 868 but a graphics card with 2x DVI out would be excellent.
    Incidently I wholeheartedly agree about the picture quality using a PC.
    I use a Uvem unit produced by Phil Hale and it is far better than any of the DVD players I have tried.

    Jeff :rtfm:
     

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