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This topic comprises 3 pages: 1 2 3
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Topic: Lamphouses
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-05-2002 10:56 AM
In one of our Kodak screening rooms, we still have a set of ORC Model 1600-16 lamphouses on three matched EASTMAN Model 30 16mm projectors. These are the ones with the separate power supply, and each have a "snout" condenser lens assembly to focus the light at the aperture with minimal modification of the original (tugnsten lamp) projector cabinet. They also have remotely controlled rotary solonoid dowsers. I installed them in the early 1970's, and they are still kickin'.The ORC Model 1000 lamphouses had the built-in 1000-watt power supply, and operated on 115 volt, 15 ampere service. The X-1000 lamp had an operating range of 15 to 35 amperes. The entire lamphouse is only 9x13x18 inches in size, and weighs 80 pounds. The best advice with these lamps is to ventilate them well. Their compact size can lead to heat deterioration of the internal components, especially in the Model 1000. When buying a used one, open it up to check for any seriously deteriorated plastic components, circuitry, or insulation. Likewise, the reflector coatings can be heat-damaged if the lamps were poorly vented. But they are great little lamps for smaller screens, and will last for decades if kept cool and comfortable. ------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
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Steve Guttag
We forgot the crackers Gromit!!!
Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 09-05-2002 12:32 PM
To answer the question...500 watts is the smallest I know of and I believe Kinoton still makes it (for use with their projectors)As to the largest lamphouse to run on 110VAC...That would go to Strong, probably...The Super Lume-x with a 110VAC compact switcher...can handle up to 2000 watts. Steve ------------------
"Old projectionists never die, they just changeover!"
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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 09-05-2002 02:23 PM
The smallest I know of is 500 watts.The ORC-1000 integrated lamp John was referring to has to be adequately ventilated. If not, you can expect a high rate of failure of the control boards in addition to what he has already cited.
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-05-2002 02:36 PM
For a small screen, I would recommend going with at least the 1000 watt lamp. With a two-blade shutter, and normal optical efficiency, you should be able to light up to a 9 x 22 foot matte white screen. For smaller screens, you can always slightly defocus the lamp (getting better uniformity) and/or run at the low end of the recommended current range. Or consider using the extra light to allow a three-blade shutter, virtually eliminating shutter flicker at 24fps, and allowing you to slow the projector for silent films. Even with a three-blade shutter, a 1000 watt lamp should still be able to light a 6 x 14.5 foot matte white screen to 16 footlamberts.------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
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John Pytlak
Film God
Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000
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posted 09-07-2002 11:49 AM
Thanks, Gordon. I forgot that ORC's X-1000 lamp was really 700 watts, and the X-1600 was only 1000 watts. I recall that ORC felt justified in that the lamphouse efficiency made them "equivalent" to 1000 and 1600 watts, respectively.------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
e-mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
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