Answered Height of screen mounting

Discussion in 'Home Cinema Building DIY' started by yevsht, Aug 22, 2018.

  1. yevsht

    yevsht
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    Hi,

    I am planning to a buy a 65' screen and mount it on the wall.

    The distance from the screen and the seating is about 2.5 meters.

    The minimum height that I can mount it is 77 cm (from floor to bottom edge of the screen).

    My question if it's not too high.

    Thanks
     
  2. Best Answer:
    Post #4 by Peter Parker, Aug 22, 2018 (1 points)
  3. Peter Parker

    Peter Parker
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    If your eyes when seated are around 44 inches (112cn) from the floor, you will have something like an 18 degree vertical viewing angle from your eyeline up to the top of the screen. That's three degrees above the recommended maximum (15 degrees) so you should be OK provided you will be reclined slightly in your seats. It's a little high but not by much. 15 degrees would have the screen around 62cm from the floor.

    If your eyes are lower than 112cms when seated then the VVA will be greater and potentially more uncomfortable, depending on how much you recline.

    Your horizontal viewing angle for 16:9 is pretty much spot on with THX guidelines for their optimum seating distance (40 degrees).

    If you can't have the screen any lower, there's not much you can do, but try it You're well within the maximum allowed which is a VVA of 35 degrees, and where fatigue (neck ache) is guaranteed. For example, THX will not certify a theatre if any seats provide a VVA of greater than 35 degrees.
     
  4. yevsht

    yevsht
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    WOW such detailed answer now I need to understand it :)

    Thank you.

    What is VVA?

    I am 1.87m , so now I need to measure distance from floor to my eyes (don't remember the height of sofa) while I am seated on my sofa I like to lean back and rest my head on a pillow.

    Don't see how can I measure the angles...

    I have a media stand about 57 cm and I plan to buy a center - about 20 cm.
     
  5. Peter Parker

    Peter Parker
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    Best Answer
    I had a cuppa and a few minutes so thought why not :)

    VVA is Vertical Viewing Angle - I had mentioned it long hand but didn't capitalise it so I guess it was kinda hidden in my first reply :)

    Like a lot of things, there are standards and guidelines which can make it easier to work things out so you don't have to rely on trial and error. Knowing that a VVA of 15 degrees or less is preferred you just need to calculate what you have to see how it compares.

    If you recline then the VVA becomes less and prolonged viewing more comfortable.

    To measure the angles you can use a simple right angle triangle calculator, putting in the distance from your eyes to screen and the distance from centre of the screen to the top to get the VVA. Or you can use the calculator here:

    cinema-tools.com | Making cinema design easy
     
  6. yevsht

    yevsht
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    UPDATE

    When seated straight on a sofa, the distance from floor to my eyes is 98-102cm
     
  7. Peter Parker

    Peter Parker
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    That will give you around 21 degrees VVA, but if you're reclined and your resting your head on a pillow, it's unlikely to be a problem. It's usually the neck that will ache after while when looking up, but if your head is being supported by a pillow, that takes the strain from the neck.
     
  8. yevsht

    yevsht
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    It's a big decision as I am planning to buy 65 Q9FN that costs a lot of money and SVS Prime center. Big investment and I don't want to suffer physically while watching movies.

    Also another concern , I planing to play on this screen with my PS4 and while playing I will obviously seat straight (as it's hard to concentrate at intense gaming while leaning back).

    Another option is to replace the media-tv-stand (mine from ikea) but most of the stands more or less with same height.
     
  9. Peter Parker

    Peter Parker
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    Edited: I've just double checked the online calculator by doing it manually, and it still has a bug in it when you input diagonal measures for the screen. Width or height work fine.

    I've also compared your proposed set up with mine, and they're very similar - mine is 12.7 degrees, and yours is 13.1. So ignoring the numbers and assuming we watch in a similar way, I'm not having any problems with watching tv so neither should you.
     
    Last edited: Aug 22, 2018
  10. yevsht

    yevsht
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    Another update.
    Tomorrow I will be ordering the TV and new speakers (new bookshelfs and center).

    But I still have doubts.

    As you can see on attached photo of my current setup with 46' TV and the media cabinet.

    I put a yellow tape to simulate the height of new tv that will be mounted on the wall, I am taking into consideration the height of center which is almost 21 cm + 1 cm gap.

    While seated and looking at the yellow tape it seems that it's a bit too high...

    Replacing the cabinet is not an option...

    What about hanging the center above the mounted TV?

    Or, maybe I can remove the Receiver and the shelf above it, and put the center there, ofcourse I will need to put there something to make it higher.
     

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  11. Peter Parker

    Peter Parker
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    If the height to the top of the tv image (not frame) from the floor is approx 167cms (57 for tv stand, 20cm for centre and 90cm for the tv which is the max dimension I could find for it), and your eyes are approx 100cm from the floor, that will give a vertical viewing angle of 15 degrees. If the image ends up lower than that, the vertical viewing angle will be less - if the ty is approx 84cms tall (looking at the specs with no stand) then the vva will be under 14 degrees.

    Having the centre in the cabinet to get the tv 20cm lower will give you a vva of under 11 degrees which will be better.

    As you're reclining and looking up that will effectively reduce the viewing angle anyway.
     
  12. yevsht

    yevsht
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    From my current seating position I do need to roll my eyes a bit to see the yellow tape...
     
  13. Peter Parker

    Peter Parker
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    I think you should be fine - your eyes won't be looking at the top of the image most of the time and will be closer to the centre for most content. If you're still concerned, then as you suggested, locating the centre in the cabinet will ensure the tv is as low as it possibly can be.
     
  14. Zigourney

    Zigourney
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    Mine is a similar set up to yours in terms of height, which is 57cm High for the tv cabinet, and I have the lg65c8 sitting on the stand. So that is 57cm+97cm for the TV with the stand = 154cm to the top of the TV from the floor, and for me its perfect sitting up or leaning back.

    yours is 167 - 154 = means only 13cm higher than my set up. You should be fine, lots of people have their TV's mounted above fire places etc. a lot higher than your set up and they seem to get on with it ok. For me the centre of the screen has to be at eye level, if not just put the centre channel speaker in the drawer pointing up.
     
  15. Joe Fernand

    Joe Fernand
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    On a side note try pulling your LR Speakers forward so that the Front of the speaker is in line with the front edge of the Table top - at present a lot of audio is being directed straight into the table top which is not ideal.

    Do the speakers have rubber feet?

    Joe
     

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