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Like Direct View HDTVs, Rear Projection CRT HDTVs use a CRT (Cathode Ray Tube) to display the image. The main difference is the physical size of the display. Most Rear Projection sets are 40" to 66" in size. If you read our section on CRTs, you will notice that the problem with these types of displays is that the image is not as pleasant on large screen sizes. So why doesn't this occur with rear projection? It still does occur but no where near as bad because the image is actually split between 3 different colored CRTs to display the image that are projected onto a front panel screen. There is a red, green and blue CRT that are merged onto the screen to completed the full color image. These CRTs also usually have a higher resolution to help improve the image. Although not as clear and vibrant as the more expensive LCD and DLP technologies, you will find that the latest CRT projection models will display an amazing HDTV picture.
Like their Direct View CRT brothers, Rear Projection HDTVs have the advantage of downgrading the resolution to match normal analog and lower quality DTV signals. However, the ability to show a good image at low resolutions decreases as the screen size increases. But, the low resolution quality will still appear to be better on these sets then on pixel based models such as LCD Projection.
The largest disadvantage of Rear Projection is that they tend to be more bulky then other types such as Plasma and LCD. Although not as much as a direct view picture tube, these tend to weigh much more as well. If space is limited or if you need the ability to move your set often, you may consider one of those slimmer LCD or Plasma HDTV sets but at a much higher price.
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What to look for when purchasing a CRT Rear Projection HDTV
When shopping for a CRT Projection based HDTV there are few features or specs you will want to look for. These features are as follows:
More Rear Projection CRT HDTV Resources
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