my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Using a cinema bulb in an NEC digital projector (Page 2)

This topic comprises 3 pages: 1  2  3

Author Topic: Using a cinema bulb in an NEC digital projector Chris Slycord Film God Posts: 2986 From: 청주시, 경북도, South Korea Registered: Mar 2007 posted 06-11-2011 05:12 AM                     quote: Steve Guttag Nothing, at the moment, beats are meets an Ushio in terms of light and holding its light. They also have a far better track record on not exploding, as compared to Osram. quote: Brad Miller Ditto, Osram cannot be beat by ANY other bulb. I assume you meant Ushio here, Brad. Right?  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 06-11-2011 12:51 PM                     Ummm YES. Old age and lysdexia sometimes catches up with me.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 06-11-2011 01:24 PM                     Ah hum, While I won't disagree they are the best I've had issues with a number of CDXL-60s including one explosion. As for Ushio you will both be crying soon as they are in the process of taking over all dealer accounts one by one and going direct sales. Great lamps, stupid buisness practice. I refuse to support that sort of company. Regarding constant light for the life of the lamp... This isn't an issue with any brand of lamp if it is sized correctly and lamp feedback is turned on. If you rely on lamp per channel all you can do is hope and pray it will stay constant... but it won't no matter who's lamp is installed. As to the origonal question regarding using cinema lamps... Yes, there is usually one that will work. It will generally end up being a larger lamp than if you use a short gap. Probably the best combination was the XBO-1600 in a Christie M. Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-11-2011 03:26 PM                     While it is true that one can use a form of constant light output (Barco's works the best and I've tried all three of the DLPs), it does not change the reality that if you use a Cinema lamp, by 100-hours in, the projector will have had to increase the lamp by 20% to hold the brightness it started out with. A DCinema lamp (at least Ushio/Christie) will not drop by that much until closer to 300-hours in and then have a shallower slope on its decline. Another reality is that as the current is turned up to maintain brightness, the greater the decay/darkening of the lamp. As for Ushio...we will see. They have been up-front with us, thus far as to who they do direct sales with and who they go through dealer for. They have yet to step on our toes as we were VERY early adopters of their lamps for all of the digitals (including Sony). They have even referred people to us. I have too used the CXL-16 in the CP2000-M with pleasing results. Christie has formalized that sized lamp with the CXL-14M (note, it does not get the "D" in its name). the CXL-14M does not require any adapters like the 16 does. As for the lamp "feedback" on the NC2000...I'm unimpressed, thus far. In fact, its whole means of measuring the light seems a bit unimpressive (at least one can calibrate it). I've had it give a "maximum number" when the light coming through the projector was completely wacked. Barco has everyone completely beat on this. One calibrates the CLO for each format...thus it sets to fL regardless if there is a 3D adapter in front, the lens is zoomed...etc. And comparing its setting versus a calibrated meter...it is more than close enough (within a couple 1/10s of a fL). Barco also won't go above 100% on its CLO...like others will do so the lamp will never be overdriven. -Steve  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 06-11-2011 03:45 PM                     Now curious: if the Barco is on the CLO mode (which is a pretty slick feature for this unit..) and you still have to pull the bulb when it's close to warranty even though the light output is great, then what is the advantage of having this feature? -Monte  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 06-11-2011 04:30 PM                     Mark, given your post above, I am now at a loss as to figure out why you support who you do since it is a direct contradiction.  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 06-11-2011 05:02 PM                     The only advantage of CLO is that it maintains screen illumination as the lamp ages. You have to size your lamps properly to get the light output in the operating range of the lamp of course. It won't do miracles: often the "best fit" lamp will still be at max power (and not quite bright enough) for 3D scope and/or at minimum power (and over the ft-L spec) for 2D flat. For a pure 2D screen it works very well. The best way to manage a 2D/3D screen would be to have two lamp modules with a big 3D lamp and smaller 2D one to swap them but I've never seen this actually done. The Barco light sensor is in the light engine and once the calibration against screen ft-L is done, it's very accurate and changing the lamp or complete lamphouse module doesn't affect it. You shouldn't change a lamp only when it's not bright enough... once you hit warranty hours there are two problems: the lamp gets more and more likely to explode, and you don't have warranty mirror replacement if the lamp does explode. Different projector's lamphouse mirror costs vary but none are "cheap". It can thus cost a lot to run an over-hours lamp, while the expected saving is not really much if you calculate a per-hour lamp cost.  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 06-11-2011 05:56 PM                     That's right: I forgot about that, for there are some cinemas that do run Barcos will have two modules with different wattage of bulb in each module assigned per each presentation format...and the system remembers the hours per each bulb in use. Just changing the bulb in a module is somewhat more extensive than doing any of the others.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 06-11-2011 07:13 PM                     quote: Brad Miller I am now at a loss as to figure out why you support who you do since it is a direct contradiction. The one you are thinking of won't go around you if they know who your customers are, they have also sent biz our way as well... FYI: All three projector manufacturers will sell direct to a customer you don't normally service. BARCO is probably the worst offender of that... that lady at BARCO...can't remember her name... is also the most obnoxious of the lot. She lost a huge sale last year to a major Midwestern chain just because she kept pestering the theater chain owner. He got sick and tired of her calls and went with a different manufacturer. Mark  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 06-12-2011 05:54 AM                        Some of this is really "old" information. Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 06-12-2011 10:20 AM                     Ah hum, While I won't disagree they are the best I've had issues with a number of CDXL-60s including one explosion. As for Ushio you will both be crying soon as they are in the process of taking over all dealer accounts one by one and going direct sales. Great lamps, stupid buisness practice. I refuse to support that sort of company. Mark  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-12-2011 10:43 AM                     Nice cut-n-paste Mark...just reinforcing Louis' statement?  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 06-12-2011 10:48 AM                     Just answering Brad's question. The Ushio thing is actually quite new as they now have two people in the field actively persuing your accounts via jet travel. They had an internal re-organization of the sales division before Cinema Con which included the addition of new roaming sales people. This is new news, not old news.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 06-12-2011 12:51 PM                     You just posted it TWICE on the SAME PAGE. BTW...we've had meetings since CinemaCon...so far, no problem.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 06-12-2011 06:40 PM                     I believe that eventually you will. Once the theaters you sell to find they are quite a bit less expensive then the direct sales things begins. Fortunately Christie does not do this YET with their lamps. Mark  |  IP: Logged

All times are Central (GMT -6:00)

This topic comprises 3 pages: 1  2  3

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.