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This topic comprises 4 pages: 1 2 3 4
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Author
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Topic: Whats your favorite xenon bulb brand?
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Stefan Scholz
Expert Film Handler
Posts: 223
From: Schoenberg, Germany
Registered: Sep 1999
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posted 11-07-1999 08:02 AM
Hard to tell, every company undergoes a phase of bad quality. OK, some lamps are of doubtably quality, have you ever seen a soviet lamp called "Razno" - Made in USSR? Or the mentioned Chinese lamps.
I have had best results with Osram lamps, constant light output and next to no blackening, and have able to run the 2k lamp for about 4k hours.
I have been very unhappy with ORC. It has been the only lamp maker that supplied 5 lamps in a row with production quality problems, and finally two lamps exploded within 40 seconds of initial start. What value is in "the industrie's best warranty"? The only warranty I need is very basic, a one which you'll never need.
Ushio has worked oK, but did never last as long as the Osram bulb.
Pricewise a bulb is not a big deal, compared to the other costs in running a theatre, assuming, that A/C on an average theatre will cost much more than 10 times in electricity per show, than your bulb costs.
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 12-16-2001 03:05 PM
I sure is not Q-Arc. I had another blow up last night. It was an XQ-3000 with 949 hours. That's the second one that blew up. The first one blew at 350 hours, in a different lamphouse. I checked the third bulb in service, and I think I will pull it very soon. It had about 975 hours, and it does not look very good. Paul Both were in the Strong Super Lumex. Think we will go back to Christie bulbs. 
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 12-16-2001 03:44 PM
Gordon:ooooooOOOOOOOOoooooooo! I'll have to check that immediately. There are 3000 watt lamps in all three Super Lumex's at this theater, coupled to switcher power supplies. I better check those power supplies to see what they are, also. The installer set these up to run at 100 amps. I have not changed that setting. Thank you for the "heads up" tip! I am at the theater now, and yes, they are XQ-3000 H/S bulbs in a 2500 watt lamphouses. The switcher power supplies (Strong International) are rated at 50 to 100 amps, 20 to 30 volts DC. Model # 628000 5. I looked at the remnants of the bulb that blew up, and the anode has 3 melt-down bumps straight across the anode face, with a 4th bump below the center one. I never saw anything like that before....not with a 3 phase power supply. What do you think? Paul
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