dual projectors off one machine...? possible?

Discussion in 'Mac Basics and Help' started by zipper1022, Apr 17, 2007.

  1. zipper1022 macrumors regular

    Joined:
    Oct 13, 2006
    Location:
    Long Island, NY/ Boston, MA
    #1
    for a project for school i need to have two projectors showing the same exact thing at the same exact time, more specifically a powerpoint slideshow. is there a cable or something i can get that will go out of my machines video card and into both projectors? or do i nee to jimmyrig it with some av cables?

    anyone provide me with some advice?
     
  2. Killyp macrumors 68040

    Killyp

    Joined:
    Jun 14, 2006
    #2
    Many projectors have a 'monitor out'. I've never used this, but I assume what it will do is relay what the projector is displaying, allowing you to connect two monitors.

    If not, there are boxes which will do it, but I can't think of any off the top of my head. Try VGA replicator or something. In case you get confused, the Matrox DualHead2Go is not what you're looking for...
     
  3. RedTomato macrumors 68040

    RedTomato

    Joined:
    Mar 4, 2005
    Location:
    .. London ..
    #3
    Yup, done it with my powerbook g4 for a theatre production.

    One projector ran off my DVI port, via a DVI-VGA dongle (came free with the laptop.) The other projector ran off my S-Video port.

    Used Keynote to create a presentation containing about 15 short movies, and blank slides in between. Someone sat and pressed the space bar to play each movie at the right time in the play.

    Both projectors showed the same films with absolutely no problems. Sweet.

    For most of the play one projector needed to be turned off. We found it worked better to just pull a flap over the front of the projector to cut off the light, rather than manually power it up and down.

    After watching me re-cut the films in iMovie then re-jig the presentation in Keynote 30 minutes before curtains up on the first night AND smoothly control the two projectors with one laptop, the theatre venue technical staff went out and brought their own Powerbook a week later! :)
     
  4. zipper1022 thread starter macrumors regular

    Joined:
    Oct 13, 2006
    Location:
    Long Island, NY/ Boston, MA
    #4
    i have a problem though,

    i have a projector with an output port, but it uses the same cable that goes from the computer to the projector

    i dont know what thats called....

    basically i need a 40 foot cable that is made for going rom monitor to computer... whatever its called

    OR
    i need a converter to go from the monitor cable type to a video (yellow cable)....

    I NEED HELP ASAP ON THIS< ITS GOING ON TOMMOROW?!?!?!
     
  5. RedTomato macrumors 68040

    RedTomato

    Joined:
    Mar 4, 2005
    Location:
    .. London ..
    #5
    You should have sorted this out a long time ago!

    It's really unclear from your garbled description what you're looking for.

    I *think* what you're looking for is a 15 meter VGA cable - you can get them from computer shops (PC world etc). It's slightly specialist, and usually I'd order them from Amazon etc.

    I don't know what this 'yellow' cable is - do you mean a composite cable, ie. the connector has only one pin in the middle, or a S-Video cable (connector has about 8 pins in it, and a plastic bar so you can't plug it in wrong way around)

    Your powerbook probably already has a S-video output on it, and it should have come with a s-video / composite converter (5 inch cable with 2 small connectors on either side). If you've lost the convertor, you can get it from an apple shop, or maybe your local hifi / home electronics shop will stock some for a couple of quid.
     
  6. zipper1022 thread starter macrumors regular

    Joined:
    Oct 13, 2006
    Location:
    Long Island, NY/ Boston, MA
    #6
    well my computer tech person in my school told me he had the correct cable, i guesss a long vga./..

    but yesutrday he told me he idn thave it....

    i need to now run to micro center and try and get one...
     

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