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Author Topic: HELP!! Black and blue bulbs Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-21-2010 02:27 PM                     The "R" predates Rentec...guess again. I always took the "R" for regular as opposed to the HTP fitting for Christie. The "R" went into everyone else's lamphouses...including Strong, Xetron...etc. Having laid hands on both Christie and Ushio lamps (and are dealers for both)...they are about the same as same gets. Christie does have an exclusivity on the lamps they sell in the USA (you can import the UXL equivalents). Steve  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 02-21-2010 04:31 PM                    That was no guess that is what I was told on good authority. So see just because you have information on good authority does not mean it is correct or accurate. It would be interesting to see how Ushio manufactures their individual bulbs for their brand and the Christie brand. I take it that Ushio did not always own Christie. Did Christie make their own bulbs before Ushio got involved? Apparently not according to this...... 1992 April Acquired projector division of Christie Electric Corp. and established Christie, Inc.), as a xenon lamp production and sales base in the United States (Christie Digital Systems U.S.A, Inc.) Ushio Inc. History I just find it interesting that a Ushio bulb seems to fail more often than the other based on general information.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 02-21-2010 06:01 PM                     I've burned Ushio's 25SC bulbs in X-90 consoles with no fail problems - got well over 4k hours out of them. And now have two DXL-40SN's in our NEC units buring very well. I almost attest failures due to rectifier/switcher and console operations than the bulb itself..  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 02-21-2010 06:20 PM                    As with all bulbs it could be just a bad batch getting out....  |  IP: Logged Scott Ribbens Expert Film Handler Posts: 118 From: Los Angeles Registered: Oct 1999 posted 02-22-2010 04:07 AM                     From the Christie Product reference notes and suffixes quote: • Consult factory for proper application • A – with anode cable • S – short lamp length/threaded tip on cathode end and 11mm pin on anode end/no cables • SC – short lamp length/8mm cathode and 9.5mm anode pins/with anode cable • LC – longer lamp length/lug type connector/14mm pins/with anode cable • R – longer lamp length/with both cables • No suffix – threaded tip on cathode end and 14mm pin on anode end/no cables http://www.christiedigital.com/NR/rdonlyres/019439C5-0774-4088-9C2E-C97E295DD9CF/0/ChristieLampbrochure.pdf  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 02-22-2010 07:04 AM                     Chrisite lamps were always Ushio, rebranded...that is no big secret. And yes, there not always owned by Ushio. As for "good authority" it depends on just who that good authority is. Having worked with "Christie" lamps long before there was a Rentec and having used the "R" version of the lamps in Strong lamphouses...it was easy to prove the statement false. The non-suffix lamps were always HTPs (Horizontal, Threaded, Pin) since that was the Christie style of the lamp. They put the addtional suffix(es) on to distinguish the regular lamps from the lamps for Christie horizontal lamphouses. "S" lamps also come after "R" lamps and most everyone has an "S" in their "Short" arc lamps. The short lamps gained momentum in the '80s since they are inherently more light efficient. Christie has also used the number to denote vertical or horizontal. A CXL-1600 would be a vertical lamp but a CXL-16S would be a horizontal. The two-digit wattage number is always horizontal. The CXL-1600 is also a longer lamp (S for short). One last note...the "R" with both cables...used to be true...It used to be that Christie would put the negative cable on all of the R lamps but, thankfully, that ceased to be the case where the CXL-20R and CXL-30R are used mostly where the negative cable is not needed. They normally just put it in the box but don't attach it.  |  IP: Logged Darryl Spicer Film God Posts: 3250 From: Lexington, KY, USA Registered: Dec 2000 posted 02-22-2010 12:37 PM                    Well, like I said sometimes good authority can be wrong....I didn't encounter any Christie bulbs or Ushio for that mater until the mid 90's. From the early 80's to mid 90's I encountered Osram and ORC bulbs. My whole point was that I know one factory can have different production lines set up to make what could be considered the same product for different brand types. The differences would and could be so small that you would not be able to tell the difference. It can all boil down to what specs each bulb adheres to. How much the gas pressure is set to. What type of internal seal process is used. It could be any number of things that could be different. Our company experienced two recent bulb explosions on ushio branded bulbs. One had exploded in the box with the box showing no damage and one was while installing it into a digital projector. Luckily the person changing that bulb had their protective gear on like they were supposed to. Now why the second one happened could have been related to how the bulb was being installed, I don't know. It concerns me because both bulbs that exploded were designed for digital projectors and with the upcoming conversion to digital beginning to ramp back up more of these will be in use.  |  IP: Logged

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