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Author
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Topic: Christie CDXL-30 vs. Osram XBO 3000 W/DTP?
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Monte L Fullmer
Film God
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Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004
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posted 11-12-2015 02:47 PM
You'll rarely find anyone here liking to use Osram bulbs, where the majority of the members here rather go with Ushio due to the better quality of bulb than what Osram can issue out.
When I began with Barco, we were using Osram with the 4000DHP variety, and I was lucky to get 900 hours out of them before the warrantied 1000 hours that are listed for this size of bulb. Issues were, hard strikes, horrible flickering, blackened envelopes, to total bulb failure before reaching warranty hours.
After switching over to the DXL40BAF/L bulbs of Ushio, I can easily go past their 1300hr warranty life with no issues and the envelope remains clear, single bulb strikes, and never had bulb failures with this make.
I also have some Barco units that do use the 3000w bulbs, where the warranty hours on these bulbs are 1700hours and I still can go over the warranty hours with no issues being the Ushio DXL30BAF/L variety.
Now, with the comparison that I have presented between the two makes are prominent with your issue, but other factors must be in play to go along with this..like exhaust and internal fan conditions and the similar-are they up to recommendations, or is their conditions that must be met.
Try an Ushio and see what you think. Besides, Christie and Ushio bulbs comes out of the same factory.
-Monte
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Jack Ondracek
Film God
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Posts: 2348
From: Port Orchard, WA, USA
Registered: Oct 2002
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posted 11-13-2015 10:18 AM
quote: Steve Guttag Now here is a universal truth I've found with the xenon lamps (any brand)...if you run them at 90% and above, they are going to decay rather quickly. It is much better to design a system where by you start the lamp at the bottom of its range
Back when I was buying Superior Quartz lamps for my film gear, I was told that some ranges of lamps were essentially the same model. Only the warranty hours were adjusted to reflect the expected usage.
I'm guessing this would have applied to their mid-sized lamps, up to 4,000 watts, as their 7kW bulb was a monster. I wonder if Ushio's DXL65BA2 and DXL70BA bulbs might be the same animal... and possibly the DXL60BA2 as well.
The difference in warranty hours between the 6,000 and 6,500 watt lamps represents nearly a third of an average season here.
Any truth to this with other companies, and if so, is it still going on? Some manufacturer specs would seem to support this.
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