questions about mounting a 4805

Discussion in 'Displays' started by James Gumbart, Nov 13, 2004.

  1. James Gumbart

    James Gumbart Stunt Coordinator

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    I just got my 4805 and need to get a ceiling mount. One big question I have is what I am aiming for as far as height. I've heard conflicting things: that the lens should be level with the top of the screen and also that it should be a foot below. Which is right?

    Also, what do people like as far as mounts? I'm thinking of something as short as possible since the projector will be mounted on a section of ceiling that was dropped about 5 inches below where the screen will be.

    I was looking at the Infocus mount (mainly out of convenience) which is about $175. Is this way too expensive?

    Thanks!
     
  2. Stephen Hopkins

    Stephen Hopkins HW Reviewer
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    The higher you have the projector above the screen then the more keystone correction you have to use which can marginaly degrade PQ and can decrease the picture size you can acheive at a certain distance. The screen size loss can be compensated for by using the zoom adjustment unless you've already used all the zoom (not a good idea, you should always leave a little room for play w/ the zoom). Anywhere from a foot below the top to a foot above the top of the screen should be reasonable.

    As for purchasing a mount I personaly wouldn't even consider it. A piece of plexiglass or masonite, a couple of flanges, a couple of pieces of threaded bar, and some wingnuts and you have a completely adjustable mount for around $15.
     
  3. James Gumbart

    James Gumbart Stunt Coordinator

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    The only problem with building a mount is I wouldn't even know how to start it.

    I'm trying to find guides for it...
     
  4. Stephen Hopkins

    Stephen Hopkins HW Reviewer
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    All you have to do is mount the flanges to the base and the ceiling, drill the holes in the base that corespond to the mounting holes on the projector, thread the threaded-bar into the threaded holes on the projector and slide them through the holes in the base, screw on the wing nuts, hang the unit on the ceiling, and adjust the pitch of the projector using the wing nuts.
     
  5. Scott Dautel

    Scott Dautel Second Unit

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    Really ... I agree with Stephen here. There's not much more to a mount than to to cut a board slightly larger than the 4805 (I painted it same color as my ceiling), then screw the PJ to board (use washers) and then screw the board to the ceiling. You may have to shim the back end, but it's not any more difficult than that.

    Scott
     
  6. Scott L

    Scott L Producer

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    I got this mount:

    http://www.avsforum.com/avs-vb/showt...hreadid=221782

    $83 and very sleek and easy to setup. Just make 2 holes in your ceiling with a screwdriver or something to ram the drywall anchors inside.

    The connecting rod from the ceiling plate to the projector is a tad long, just tell him you need a short one.
     
  7. Jim Mcc

    Jim Mcc Producer

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    James, they really are very easy to make. I made mine for less than $15. A scrap piece of MDF, 2 pipe flanges, 1 pipe nipple, 3 bolts and nuts to fit, and washers. There are photos at Avsforum.com, Projector section(under $3,500), search for "Monkeyman" mount. I made this one but left out the springs, and used MDF instead of Plexiglass.
     
  8. terence

    terence Supporting Actor

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    I'm using this one for my 4805......


    Premier Mounts Gyrolock PBL 110


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    [​IMG]


    [​IMG]



    The PBL Gyrolock mount offers tremendous versatility for projectors weighing less than 15 lbs Ideal for ceilings (including sloped ceilings), it can also be mounted to a wall or tabletop. There are two drop options; the projector can either be flush mounted 2-1/2” from the ceiling for a low-profile look, or anywhere from 9” to 12-1/2” below the ceiling using its included adjustable arm.
    The mount itself offers 360° of rotation, and more than 20° of tilt and roll, with positive locking in any set position. Tilt, roll, and rotation can be adjusted independently of one another, compared to the clumsier adjustments needed for ball-and-socket mounts. The mount’s quick-release system allows for easy projector mounting and removal while retaining the original registered position.

    Features:

    -360° rotation with more than +/- 20° tilt and roll
    -Built-in angled ceiling compensation
    -Adjustable in height from 9" to 12-1/2"; or built-in low profile option of only 2-1/2" from mounting surface
    -Unique ceiling plate can be mounted to structural ceiling or single wood joists
    -Positive locking in any set position
    -Docking system for easy display removal
    -Dark Charcoal Gray finish (Sinterflex)
    -Cable-routing channel for a clean look
    -Comes with manufacturer's limited lifetime warranty
     
  9. James Gumbart

    James Gumbart Stunt Coordinator

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    Jim, I like the thread you referenced.

    I saw some mention of concerns about shorting it out if one screws in the bolts too far. Will it be obvious how far is too far when I get them?

    Also, I assume adjustments aren't too difficult just by adjusting the distance between the plexi and the projector?
     
  10. Paul-D

    Paul-D Stunt Coordinator

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    You can also check out EBay for other "cheaper" mounts. Just type in 4805 in the search, then narrow it down to Home Theater stuff. There are some good looking ones that will also be less expensive.
    Just my two cents
     
  11. peteSemisolo

    peteSemisolo Auditioning

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    Couldn't not reply to your post. I am in the process of building my HT in the basement, and a fantastic solution to mounting most projectors is a heavy duty speaker mount. go to panavise.com to look at the cctv mounts or the 20# speaker mounts. I was thinking about how I was going to justify over a 100.00 to mount my projector, and remembered I had a speaker mount in my car that a former owner had used to mount his laptop.

    Double ball adjustable, about 6 inches long, powdercoated black, only about 30 bucks online or at a stereo shop. Panavise makes bulletproof stuff and I won't worry about how my mount looks. the one I have has a small square plate on one end 1 5/8 x 2" and the other end has a 2 1/2 " square plate. I am going to get a piece of aluminum diamond plate, cut it into a triangle just larger than the mounting holes in the PJ, bolt the flange onto the plate, and voila--- 200.00 mount for about 10 bucks in my case. about 40 for anyone else.[​IMG]
     

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