Screen calibration and new technology part 2

screen calibrationWithout getting too technical, we’ve invested in TV and projector calibration technology that will combat these problems and also improve your viewing experience with not just OLED screens but with all other screen technology as well. Just think about it, if you had a home theatre installed, did the installer calibrate the home theatre system? Odds are they did, so why shouldn’t this apply to a TV screen, calibrating a display is just as important as calibrating a home theatre system, yet nobody knows about it.

THE RETAIL STORE EXPERENCE

All retail outlets will not tell you that screen calibration is available as naturally there more interest in profits and return visits sooner rather than later and less about product experience and the life span of the actual product, we believe in the complete opposite, we want you to be happy for many years.

THE CUSTOM AUDIO VISUAL SOLUTIONS EXPERENCE

What we do is calibrate the screen, we adjust the individual colour pixels, so all the colours are working at the right levels, over time the colours, as well as brightness and contrast, WILL change, the screen will slowly change colour and not “look right”. To maintain perfect colour and peak performance throughout the life of your TV (how the director that made the movie or show intended for you to watch it) it is recommended to calibrate your TV screen every year. And since you have invested a large amount of money on a new TV, calibration is a very cheap way to maximise the screen’s lifespan as well as your viewing experience. This is just one advantage; another advantage is that since the TV is not working as hard, there will be a power bill saving, we’re quite sure the retail stores will not tell you about this; also the picture will not be as ‘in your face’ as it originally was.

When a TV comes straight out of the box, the manufacturer set the TVs up to work very bright and the colours are more driving towards blue than natural tone. The reason for this is this is our eye perceive a more blue colour as a better colour and also on the showroom floor the manufacturers are competing with each other and they know setting up the TV’s up like this will sell more. We’ve been conditioned to perceive that brighter and bluer tones are better when realistically it’s not, it actually is worse and it’s a fake representation of the true picture. So having your TV professionally calibrated, you are doing not just yourself but you are doing your family a great justice.

THE OLED EXPERENCE

Now, just to clarify, we are not saying OLED is a bad technology, quite the opposite. OLED TV’s do have its advantages, for example, OLED has a much better contrast ratio than other technologies. A contrast ratio is the difference between one pixel to its neighbour; it is how ‘black’ one pixel can get to its neighbour being ‘white’, OLED does a great job separating it all. Other technologies like LCD and plasma tend to ‘bleed’ across pixels, so the blacks are not true blacks, that is where OLED comes into its own. You would notice on other TV’s when there is a black scene; there is still some light (a very dull white light coming out of the TV), OLED will make it even darker, so calibrating an OLED should be a must and taken priority over anything else before you begin.

To see what calibration is about in detail, this is a 2 minutes video,

http://www.youtube.com/watch?v=MFSqNCI58sE&list=LLF-7vI80yXs45V43Ma_rdtQ

And for a more in depth process, this video is one and a half hours long and demonstrates the process involved in calibration.

http://www.youtube.com/watch?v=eqWd8qs9YAk&list=LLF-7vI80yXs45V43Ma_rdtQ

Alternatively go to click here and go straight to our page.

oled cell

Screen calibration and new technology part 1

Different screen technologies

With technology changing at a very accelerated pace, screen technology is also changing. Some of the technology still with us is LED, LCD, DLP and LCoS in projectors, LCD/LED in flat screens. It was said that depending on what was mostly watched will dictate what the best screen technology was to use. As technology changes, we now only really have is LCD/LED, though other display technologies are still available like plasma at the time of writing this blog, as plasma is phased out, new technologies are always being developed.

A QUICK BACKGROUND

All previous technologies use gases and chemicals to create colours, but the newest screen type available at the moment is OLED, and to put it in its most basic form, the display use ‘organic’ components. Basically how it works is when electricity is applied to the organic component they start to glow, but as with all new technologies, there is drawback.

OLED, HOW IT BASICALLY WORKS

As OLED is the new kid on the block, we have found that there are some drawbacks to this technology, but it’s nothing that can be overcome with some TLC. By default OLED is a less efficient technology then others are in regards to light output. The colours used for most TV screens are usually red, green and blue, the primary colours. But to overcome the problems with light output from the display, current manufacturers have come up with very different solutions. LG, for example, has added a fourth colour being white to overcome this. Samsung still only uses RGB but have made certain pixels (the millions of little individual colour squares that make up your screen) physically different sizes. For example, the colour blue is not as efficient as the colour red so Samsung has made the colour blue pixel twice as big as the red colour and green is a tiny bit bigger than red as well. It was also said that the blue pixel over time would reduce in output, try finding this kind of information out from the retail stores.

Click here for part 2

dolby 7.1

Basic speaker layouts and how it is done

WHERE SHOULD THE SPEAKERS GO?dolby 7.1

A basic 5.1 home theatre system (in 2014) is very straightforward. With the surround (rear) speakers, 99.9% of salespeople and so-called home theatre experts would say the speakers need to be installed up high, in the corners of the room. That’s just doing it all wrong in a home theatre environment, that is just incompetents and/or laziness on their part. The reason it is wrong is that there are standards with speaker placements, and in post-recording of a movie, the sound director will have their speakers placed in this specification. When sitting on the lounge our heads are not at ceiling height, what it means is that the speakers should be at about 300mm – 600mm above the seats, so ideally speakers should be installed at around halfway down the wall and not high up near the ceiling. Only then will the sound immerse you when placed at the correct locations, but we understand that this won’t always work especially if the home theatre system is to be installed in a lounge room and another oddly shaped room. So after you find a place halfway down the wall, the next rule you need to look at is that the rear speaker will need to be more or less 90 to 110 degrees on either side from the optimal setting position.

For the front speakers, and not to confuse you too much, the general rule here is to work in 1/3 (depending on how far back you are sitting from the screen). The appropriate angle to work from with the front speakers is 22 to 30 degrees from the main seat.

So to sum up, depending on what home theatre system equipment is purchased, either a 5.1 or 7.1, right up to an 11.2 surround sound speaker system, speaker placement will differ and is unique for each custom setup.

DIFFERENT SOUND FORMATS

FACT, there are different sound formats used, the two most important ones are DTS-HD and Dolby TrueHD (at the time if writing this blog in 2014), there are others but not to confuse you anymore then needed, we’ll stick with the current ones. The sound formats listed above has a particular specification on where to place speakers, and this is what we follow when installing a home theatre system.

At the other end of the market, there is a format called THX, some movies are designed for THX, and some movie theatre are THX certified, so what does that mean for you? The higher end of the market (but still affordable to most people) are speakers and receivers that are THX certified, so to get the full experience, further work needs to happen to the room to get the full proper effect. Basically, THX is not just another sound format but a set of guideline to meet certain criteria of standards. The extra work to the room would be things like eliminating external sound as well as internal sound from equipment like air conditioner ducts and a projector fans, echoes, audio distortion, unequalised or poor audio as well as picture quality, so calibrating a TV or projector from factory standard will make a big difference. THX is an experience all on its own.

More information on THX, please visit

http://www.thx.com/

https://www.dolby.com

www.cedia.org