Film-Tech Forum ARCHIVE: CHRISTIE CDXL 30SD Vs CDXL 30

This is topic CHRISTIE CDXL 30SD Vs CDXL 30 in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by David Stone (Member # 4846) on 01-24-2010, 06:08 PM:

Hi Guys,

I have a Christie 2000ZX with a CDXL 30SD xenon running 1000 watts on 2D and 2100 watts on 3D scope. The installer wants to swap the xenon to a CDXL 30 for unknown reasons. Putting the extra 500 hrs warranty aside, would it be better to continue to use the 30SD xenon becuse the 30 will need to run 100% on 3D scope from day 1. Allowing for light loss over time and the increased operating temperatures, which do you think is the best way to proceed.

Cheers,

David.

Posted by Steve Guttag (Member # 268) on 01-24-2010, 07:05 PM:

Having not run your numbers, I can't say if it is true that the CDXL-30 would need to run at 100% for scope.

However, if that is indeed the case, then I would stick with the SD. If it is not the case then I would switch to the CDXL-30. The key is, you should meet/exceed spec at the end of the lamp's life, period.

Another thing I have found though actual test is that as lamps approach 100% of their rated current, their darkening speeds increases geometrically. So when you are at 120% (top of allowable range), you are really consuming the lamp.

Steve