1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Complete novice requires advice and guidance

Discussion in 'Projectors, Screens & Video Processors' started by baroness, Oct 27, 2004.

  1. baroness

    baroness
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    undefinedundefined

    I am building a community hall and need advice about using it for screenings. I believe CRT, although the oldest of the 3 systems is still the best?? What I need to know is what distance can I use a projector from the screen and get a good image and what size screen I would need? I know this sounds basic, but I have never done this before and hence am on here? We are hoping (with the appropriate licence) to generate income from community cinema screenings of mainstream dvd's.

    Thanks in advance
    :confused:
     
  2. JMPremier

    JMPremier
    Standard Member

    Joined:
    Sep 3, 2004
    Messages:
    145
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +0
    A rough rule of thumb for a CRT projector distance is 1.5 x screen width.
    ie for a screen 8 foot wide the front of the pj will need to be 12 foot from the screen.

    John
     
  3. Chris Frost

    Chris Frost
    Well-known Member

    Joined:
    Jul 14, 2000
    Messages:
    2,782
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Cheshire
    Ratings:
    +109
    baroness, nearly all CRT projectors sit relatively close to the screen. The rule of thumb is Screen Width x 1.5 equals the distance from screen to the projector. This means that the projector will be hung over where an audience might sit. Cinema style layout with the projector at the back of the room is not possible with CRT.

    Screen size depends on the room size (and height) plus the audience size. To give you a rough idea, a typical CRT projector in a pub or bar will work well on a 6ft wide screen, the picture size being big enough for an audience of up to 40 people watching sport.

    What is the room size and audience numbers you are aiming for?

    Regards
     
  4. Vince M

    Vince M
    Standard Member

    Joined:
    Nov 2, 2004
    Messages:
    479
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    19
    Location:
    Lagoa
    Ratings:
    +0
    Depending on what crt you choose(If you do.) there is various s/ware designed to calc. throw etc. PJCALC is a good one for Sony crts.
     
  5. Tom.W

    Tom.W
    Member

    Joined:
    Nov 16, 2004
    Messages:
    1,066
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Ratings:
    +104
    Most CRT projectors have optional long throw lenses for larger screen sizes.
     
  6. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    Tom Please check your facts.
    There are no long throw lenses for CRT.
     
  7. Tom.W

    Tom.W
    Member

    Joined:
    Nov 16, 2004
    Messages:
    1,066
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Ratings:
    +104
    Sorry,I guess long throw was a bad choice of words.There are lenses made for larger screen sizes such as the Barco HD-180 for the 1209 series of projectors.These are designed for over 9ft screens.
     

Share This Page

Loading...