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Author Topic: USHIO CDXL-30 wattage David Stone Film Handler Posts: 75 From: Hornsby, Sydney, Australia Registered: Jun 2008 posted 03-18-2011 01:27 AM                     Hi Eveyone, Is it true the CDXL-30 xenon although rated 3000 watts, actually only gives 2500 watts. The service company I use downunder told me this today, Cheers, David  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 03-18-2011 01:34 AM                     Your service company is wrong.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 03-18-2011 04:40 PM                        volts times amps equals 3000 watts. Louis  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 03-18-2011 06:34 PM                     They may give the lumen output of a 2500W, but what you wrote doesn't make much sense. If you power your lamp with 3000W... that's it! "Watts" is not a way to measure brightness!  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 03-18-2011 07:41 PM                     The CDXL-30 gives MORE light than a traditional 3K lamp.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-18-2011 08:34 PM                     Yes, it is unfortunate that the cinema industry chose to use Watts as some form of measure of brightness. Not all 3KW lamps output the same lumens...even if they did, how they interact with the reflector, lens and the rest of the optics will determine the efficiency of the system. In the case of the CDXL-30...its "wattage" equivalent (in terms of brightness) is approximately 3800-watts...as compared to a standard CXL-30 as the 3000-watt reference. The CDXL-30s rated voltage is 27 and its current is 110...which is 2970-watts (pretty close to 3000...don't you think). However, the CDXL-30, despite being a 3KW lamp...can go all of the way up to 120-amps. Now its voltage will go up too...though not at the same rate as the current...at 120A...it is consuming about 3300-watts. So just where did your tech get his/her information from? -Steve  |  IP: Logged David Stone Film Handler Posts: 75 From: Hornsby, Sydney, Australia Registered: Jun 2008 posted 03-19-2011 03:25 AM                     Hi Brad, Steve & everyone, Where they get their info I don't know, but they are the biggest digital company Downunder, I will certainly pass on your comments to them, Cheers, David.  |  IP: Logged

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