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Author
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Topic: Got a chandelier in your auditorium?
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William Hooper
Phenomenal Film Handler
Posts: 1879
From: Mobile, AL USA
Registered: Jun 99
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posted 07-03-2001 03:37 AM
Does anyone have a big house with a chandelier on a winch in the auditorium?How often do you re-lamp it? Has an electric winch been installed? Someone nearby is saying that their chandelier needs to be re-lamped twice a year, & installation of an electric winch would supposedly not be unusual. I think they've got a lamp (or other) problem.
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William Hooper
Phenomenal Film Handler
Posts: 1879
From: Mobile, AL USA
Registered: Jun 99
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posted 07-04-2001 11:42 PM
quote: Why does this remind me of "The Phantom of the Opera"???
Is it because of the organ & (when one of the sump pumps conks out) the underground lake? Thanks Will & JC!
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Bill Enos
Film God
Posts: 2081
From: Richmond, Virginia, USA
Registered: Apr 2000
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posted 07-05-2001 12:28 AM
We have 9 chandeliers in the auditorium. Three on each side about 35 feet up in arches, these are about 3 feet in height. One in an alcove on each side of the proscenium, about 7 feet in height; and the main chandelier in the center of the dome. This one is 22 feet high and about 12 feet in diameter, it hangs about 64 feet above the floor and lowers on a hand crank winch. All chandeliers have red, cobalt blue, and amber bulbs, all on dimmers which are never brought to full. Bulbs are changed on an as necessary basis which means about every 18 months or so. Sooner if too many are out. The main has around 300 bulbs, the 3 ft. ones have 8 and the 7 ft. ones have 28 bulbs all 25 watts. There are also 3 chandeliers in the lobby, 2 small and one very large, these are reachable from ladders and bulbs changed weekly.
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Bernard Tonks
Jedi Master Film Handler
Posts: 619
From: Cranleigh, Surrey, England
Registered: Apr 2001
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posted 07-07-2001 04:05 AM
Granada Theatres in the UK were renown for massive chandeliers in their auditoriums. I would use the 16,000 hour long life bulbs. The specially designed, thicker filament of these bulbs has 9 supports (rather than 3) which ensures they will last up to 16 times longer than a regular bulb…reducing maintenance costs. Ideal for light fittings in awkward or inaccessible positions. Reduced brightness compared to a regular bulb but remains bright throughout its life. Long life bulbs should NOT be mixed with regular bulbs in the same or nearby fittings. Definitely for me if I had chandeliers in my cinema.
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Bruce McGee
Phenomenal Film Handler
Posts: 1776
From: Asheville, NC USA... Nowhere in Particular.
Registered: Aug 1999
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posted 07-07-2001 02:05 PM
This is an interesting topic.I am wondering about the original question about the short-lived lamps. Is the dimmer system up to snuff? I know that some theatres buy the cheapest things that they can find. (Your theatre is not one of these, I assume.) Cheap does not mean better, as you know. Our local civic auditorium (funded by the city) buys 2nd grade lamps for their lighting needs. Everytime I go to a function there, I notice that lights are out all over the place. What a shame. It makes the Civic Center (It's name) look really cheap. I hate this. The people working there are professionals and they cant do anything about this problem. Anyway, can you find 130v lamps for the fixtures in your theatre? W.W. Grainger Company has lots of different voltage ratings for many types of lamps. 130v lamps do last longer than the 120v ones. I hope you can figure out the short lamp-life problems.
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William Hooper
Phenomenal Film Handler
Posts: 1879
From: Mobile, AL USA
Registered: Jun 99
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posted 07-09-2001 12:19 AM
Bruce is about where I was thinking on this, too.From another front came a message from Lyman Brenneman in Cleveland: "But, why relamp twice a year? The chandelier must be on a dimmer and if they would set the output voltage of the dimmer at about 105 to 110 volts and use 130 volt lamps instead of 120 volt lamps they would only have to relamp about every 5 years. "Tell them to look in the big General Electric lamp catalog and they will find that almost all incandescent lamps are available in both 120 and 130 volt ratings.
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