---   CRT PROJECTORS   ---


Understanding CRT Projector Technology
 -- Jim Gelder, Projectorian.com


CRT (cathode ray tube) projectors are the most mature type of projector technology, and is especially useful in large venues.


The CRT projector uses three tubes, or light guns, which project three colors that blend together to create the resulting image.


Because this type of projector does not have a fixed number of pixels, it is more versatile in terms of creating a clear image at any resolution.


One downside to the CRT projector is that it will require occasional calibration. This is a difficult and technical task, which must usually be done by a serviceperson.


The CRT projector is usually large and heavy, making it useful only for installations where they will be fixed permanently. Although they can be wheeled on a cart, a CRT projector is less portable than a DLP or LCD unit. Also, the CRT projector does not produce as much light as the other types of projectors. Overall however, picture quality on the CRT projector is excellent.


Besides the weight, CRT projectors are more time consuming to install, and sometimes require a warm-up period before use to make sure the light guns will project accurate colors.


CRT projectors may be older technology, but they are nowhere near obsolete. While DLP and LCD may be more useful in terms of portability, CRT technology still has legs, and will be in use for several years to come.


Despite the bulky form factor, CRT projectors still have an edge over digital models in that it can produce very rich and vibrant colors with a more three dimensional appearance. The image is more continuous, with no inter-pixel spaces, something that the DLP and LCD projectors still must overcome.


The CRT image is of better quality than digital in most cases, and the depth of color and excellent contrast make the colors vibrant and the image more realistic. However, the fact that the CRT projector is more expensive and difficult to set up is a major drawback. Also, digital projectors have the advantage of being able to work in rooms with almost any type of ambient light.





The home theater guide, otherwise known as Robert Silva gives a great in depth explanation of CRT technology as it relates to home theater projectors here and you can also find a ton of indepth information on the review of the MP9-CRT. The review may have been done in 2002, but this oldie is definitely still a goodie. For unanswered CRT questions, try this forum which has some pretty helpful members.