Correct hieght for TV on wall?

Discussion in 'Home Cinema Building DIY' started by paul777, Jun 12, 2018.

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  1. paul777

    paul777
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    What is the correct ergonomic height for a TV on wall?
     
  2. citywalker

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    TV screen center should be at eye level.
     
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  3. Peter Parker

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    Ideally the top of the screen shouldn't be more than 15 degrees as looking up for prolonged periods can be fatiguing, and lower is better (take into account reclined seating). You can use this calculator to work out what the angles will be if you place the tv at certain height in relation to your eyes when seated:

    https://vac.cinema-tools.com/#!/
     
  4. paul777

    paul777
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    So if I am correct with the pdf I have the perfect viewing angle right now?
     

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  5. Peter Parker

    Peter Parker
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    The screen ratio should be 1.78 not 1080 which is why the info it's produced isn't quite right. Mind you, having tried it using diagonal (I usually use width as I calculate for custom projection screens that aren't 16:9 and not TVs) the screen dimensions it gives seem to be larger than a 50" diagonal screen should have. I'll check it again and report it to the owner if it's wrong. It might be better using the screen width (43.5ins) and 1.78

    Is the top of your screen roughly in line with your eyes?
     
  6. paul777

    paul777
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    Thanks Peter mate. Forgot that's the picture 1080p it's a 50 inch mate. Don't understand the width thing you mean (43.5) and 1.78.

    Yes top of the TV is near enough it mate.
     
  7. Peter Parker

    Peter Parker
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    Hi. The ratio is 1.78:1 - the width in relation to the height - 1920 divided by 1080 = 1.78:1. The width of a 50" display is roughly 24.4 ins tall by 43.5ins wide.

    If you find the tv is perfectly watchable at the current height and you don't have any problems with it, that's fine - it's all about what is comfortable etc. You can raise it a bit if you wanted, but the important thing is that it's not too high as that's when it can become uncomfortable to watch. That's why there is a 15 degree vertical recommendation, and as long as you are below that (and you are) you should be fine.
     
  8. Zigourney

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    The centre of the screen should be at eye level when sitting down on your sofa comfortably.
    For an average adult that equates to about 110cm high from the floor to the centre of the screen.
     
  9. Navvie

    Navvie
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    I've seen everything from 15 degrees to top of screen, centre of screen at eye level, bottom of screen at eye level, eye level 1/3 up from the bottom.

    Screen height, despite recommendations, is a personal thing. Take heed of the recommendations but do whatever suits you and your room.

    Due to speaker placement, the bottom of my TV is 150mm above eye level.
     
  10. mushii

    mushii
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    My TV in my Cinema Room is at eye level. My TV in my living room is above a fire place. Contrary to all of the advice I find both just as easy to watch and neither fatiguing. TVs often get installed for aesthetic value as much as perfect viewing angle. From an ergo perspective, looking down is far worse for you as it causes the viewer to hunch forward, placing stress on the neck and shoulders. Looking up generally requires the neck to tilt back slightly but pushes the back and spine into the seat, providing slightly more support, which out of the two is better.
     
  11. Peter Parker

    Peter Parker
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    Actually, looking up is considered worse due to neck fatigue, that's why there is a vertical limit guideline (SMPTE, THX, CEDIA etc). Often in lounges we're reclined to some degree so naturally looking more up than straight ahead. I know people who have had their tv too high and had to move it lower (twice) to get it right because they didn't know any better. It was wall mounted so three sets of holes were drilled before they got it right.

    This diagram gives you an idea. There is a maximum of 35 degrees vertical which is considered to be uncomfortable, and THX say no seats should be closer and give a greater VVA than 35 so those seats would be the very front row in a THX certified theatre:

    [​IMG]

    Our relaxed sightline is 15 degrees below the horizontal which is why it's more comfortable looking down than up:

    [​IMG]

    All angles are relative to our sightline, so reclined will be looking up more than horizontal relative to the ground. If you're reclined and your tv is high, you'll probably find you're within the guidelines without realising it.

    As long as you can watch the tv for prolonged periods without any discomfort then you should be fine. I just pointed out the guidelines to make sure the tv wasn't too high for the OP for the reasons above. When they design and build theatres, they build them to guidelines.
     
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  12. Zigourney

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    Of course I too have seen many different and weird TV positioning out there, and it is entirely to personal taste, room aesthetics, furniture setting, also other items such as fire places which you may not have any control over will need to be factored in, but the recommendation for centre of the screen at eye level is there for good reason, and that is so that you do not get "TV Neck" from prolonged viewing. Centre of the screen at eye level is the most natural posture to stare at something for a long period of time.

    and personally I cant stand it when people mount TV's above fire places, just my personal opinion
     
  13. mushii

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    One of the reasons the relaxed sightline is declinated is general poor posture when sitting. Most people don't sit with good posture and tend to lean forward. They round their shoulders forward resulting in a slouch. If you are a bad back sufferer (20 years with a herniated disc) your osteo / chiropractor will teach you to sit properly, which does not result in your head being tilted forward.

    TV neck is often due to a forward slouch then the neck being tilted back to compensate, putting twice the amount of strain on the neck and upper back. This is exacerbated by squidgy sofas that provide no lumbar or shoulder support.
     
  14. paul777

    paul777
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    Is this the perfect height? But when I go back in my recliner it alters everything. Recliner fully adjusted back makes the top of the recliner where my head rests is 800mm.
     

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  15. Simba

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    bear in mind some tv's have filters on the screen so if viewed too far off centre you may not be getting the best picture.
     
  16. Navvie

    Navvie
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    I struggle to watch anything fully reclined. :boring::boring:

    Even part reclined, with your neck straight, you'd be looking higher up the wall?
     
  17. Peter Parker

    Peter Parker
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    With that tool, you have to enter 1.78 as the ratio or it won't won't give accurate results. I've reported the issue and they are going to fix it. If you look at the results for screen size etc in the pdf, do any of them look correct to you? Is your screen 439ins wide and only 26ins tall? ;)

    The tool doesn't show you what the perfect height is, it just shows you what the current set up gives you. It's ideal to determine what your viewing angle is and that it is under the recommended max for comfortable viewing. It's good to know before you install things rather than after and then have to alter stuff.

    As I mentioned, you have to take into account that you will be looking up more if you are reclined to some degree when seated. Sitting with your eyes at the same height as the bottom of the screen but being reclined when viewing can be perfectly fine for example.

    If you are happy and comfortable with your current set up, then you should be fine - why do you want to change it? If you want the tv a little higher then that will be fine too. In most cases looking up too much can be a problem so we're trying to avoid that.
     
  18. ben16v

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    i find eye level anywhere in the middle 3rd of the tv or screen, when in normal sitting position for watching works at any size image
     
  19. paul777

    paul777
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    I have back problems and neck problems that's why I want to change it Peter. I'm sorry but I am not getting email alerts, for people replying to this thread. I have another question Sky magic eye do you need HDMI cable or just the magic eye? I don't understand how you get a picture and is it 1080p and 4K ready? Off to do this again and I will upload pdf Peter. Thank you.
     
  20. paul777

    paul777
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    tried it in inches. What am I doing wrong?
     

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  21. Peter Parker

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    You're putting 16.9 into the aspect box instead of 1.78, that's all :)

    I did it for you (see attached, but please check I've not entered the info wrong) - with the set up you suggest you'll have a 13.38 vertical viewing angle, so it should be ok. Is there anyway you can do some kind of check to make sure? Like some scotch tape on the wall to roughly replicate the tv frame and see how it feels looking up at it (not ideal as it should be for a long period and walls are quite boring to watch unless with wet paint). I'm only suggesting that because if you have some back and neck problems you may want to be doubly sure before moving the tv to a new height.
     

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  22. JohnProton

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    I had my old 47" tv put on the wall I paid a professional to do it, I paid about £80 for it silly fool I was, he did an awful job and I learnt my lesson. Anyway I bought a 65" 4k tv a few years later and did it myself with the help of my mums boyfriend and now the bottom of my tv is about 32" front the floor and its perfect! I look straight ahead and maybe sometimes a slight tilt to my head. When the arial specialists came and fitted the old one it was horrible to look at and yes fatiguing, I ended up a few months after paying what I paid and pulled the tv off the wall so that was a waste of time and money.
     
  23. paul777

    paul777
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    Do you think I would definitely worse off? I am doing it for the exact opposite reasons? Yes you are correct Peter it's 930mm to my eye level. I was measuring to the top of my head. But is that file not showing my eye level at the bottom of the TV. I don't why I am not getting notified about new posts. Just had an email off the forum about a 4k TV.
     
  24. paul777

    paul777
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    I'm a bit confused are you saying it was OK 32" from the floor and then the arial specialists messed the height up for you? John
     
  25. Peter Parker

    Peter Parker
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    What I meant was, looking at a taped box for a long time can be boring. It was a (very) poor attempt at humour. With the tv that high you should be fine, but it's always good to check things just to be sure, that's all I was suggesting.

    As for the post notifications, see if there is anything that needs changing in your alert preferences.
     
  26. paul777

    paul777
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    First one I've been notified of. Went into alert preferences and nothing was unticked. So I just clicked save to see if it made a difference. So far so good. Yeah that's a good idea mate cheers I'll give it a go.
     
  27. alancross

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    This tool always gives me a screen width that is greater than the screen diagonal I have entered (with a screen ratio of 1.78), which is clearly not right.
     
  28. Peter Parker

    Peter Parker
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    Yes I know - I mentioned it earlier. It's a bug and I've reported it to the tool owner.
     

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