8mm Forum: lamp life of the gs1200 stereo.

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Topic: lamp life of the gs1200 stereo.

Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted June 06, 2006 11:11 AM

hello fellow members,whats the average lamp life you gs1200 owners get from your machines?.i'm taking days,weeks etc;not hours.also would the xenon version lamp life be like.andy.

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Douglas Meltzer
Moderator

Posts: 4554
From: New York, NY, USA
Registered: Jun 2003

posted June 06, 2006 01:03 PM

Andy,

I believe the bulbs are rated at 25 hours which of course never applies to real (reel?) life. By answering this, I'm sure I've cursed myself to have a blown bulb next time I use the projector.

Doug

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I think there's room for just one more film.....

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Paul Adsett
Film God

Posts: 5003
From: USA
Registered: Jun 2003

posted June 06, 2006 03:01 PM

Like Doug, I think the 25 hour rated life is optimistic. But, if you only run the GS1200 at the low lamp setting, which is certainly fine up to about a 5ft matt white screen, I suspect the bulb would last a very long time.

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The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted June 06, 2006 03:36 PM

thanks gentlemen.yes your correct paul.my lamp has been used for the passed five months.thats on low setting off course.andy
p.s sorry doug for putting my post in the wrong place.

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John Clancy
Phenomenal Film Handler

Posts: 1954
From: Cornwall
Registered: Jun 2003

posted June 07, 2006 04:36 AM

I get around 50 hours from a standard GS. Around half that time the lamp is in the low light setting. I've had lamps that run a lot longer but then I've also had some that go after very few hours.

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British Film Collectors Convention home page www.bfcc.biz. The site is for the whole of the film collecting hobby and not just the BFCC.

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Jean-Marc Toussaint
Film God

Posts: 2392
From: France
Registered: Oct 2004

posted June 07, 2006 04:44 AM

That is really unpredictable. My previous lamp (original Elmo ESC) started to turn yellowish after 10-15 hours and died at 20. The new one (actual ESC - 4 coils - but unbranded, found at a supply store for surgical equipment) is still very bright, has been in used for a year, way passed 35/40 hours...

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The Grindcave Cinema Website

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Andrew Wilson
Jedi Master Film Handler

Posts: 784
From: dundonald,belfast,co.antrim,northern ireland.
Registered: Jan 2006

posted June 07, 2006 11:05 AM

i suppose its a case of pot luck with the lamps.andy.

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Winbert Hutahaean
Film God

Posts: 5468
From: Nouméa, New Caledonia
Registered: Jun 2003

posted June 08, 2006 09:43 PM

I just knew that the lamp life is that so short (5O HOURS!!)

A bit out of topic, is that also applied for 35 mm projectors? If it is the case I could imagine how really un-economical to run a show in a cinema with only less than 10 spectators. A movie could run almost 2 hours (meaning in 25 shows or in 6 days they have to replace the lamp). Not to count yet the eletricity, tax, employees, premises cost, film rental, etc

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Winbert

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Jan Bister
Darth 8mm

Posts: 2629
From: Ohio, USA
Registered: Jan 2005

posted June 08, 2006 11:41 PM

50 hours may seem short... but you'd have to be watching movies for just over 2 full days non-stop (on average) before the bulb blew out. That's really not so bad after all - and it's assuming you use the "high" lamp setting on your projector.

35mm cinemas don't use halogen... that's where xenon and HTI lamps feel at home. (well, that and John Clancy's GS-1200) [Wink]

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Call me Phoenix. *dusts off the ashes*

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Kevin Faulkner
Film God

Posts: 4071
From: Essex UK
Registered: Jun 2003

posted June 09, 2006 03:30 PM

In my opinion I think the ESC lamps are slightly overrun which will increase their light output but shorten their life (quoted 25hrs)

I know that with the std GS's I used to own that I could get more than 25 out of them by running them at the low setting but I did tend to find that the lamps could start to discolour a bit and then I would swap them out because of that. Its important to remember that the Halogen cycle doesnt work to its optimum if the lamps are under run as the cycle only woks correctly at the lamps correct running temperature which is noramlly at full voltage.

I found that it did vary from make to make as well.

This can make it all a bit swings and roundabouts on lamp life.

Kev.

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GS1200 Xenon with Elmo 1.0...great combo along with a 16-CL Xenon for that super bright white light.

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