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Author Topic: Elmo GS1200 Upgrade
Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017


 - posted October 25, 2017 10:20 PM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
This Transformer was only made speciell for my GS machines.
Long Time ago I went to a Transformer Factory and give them the Voltage I must have. And they made the Transformer for me. The Output Voltages must be 0-21,5-24-25 and perhaps 26V. The Input was 230V +- 5%.
In the GS you must cut the three Lamplines on the Transformer.
0=black, 21,5=yellow, 24=white. Now I have 6Lines melt on. Three from the Transformer comming and three that are going to the Elmo (Lamp). This 6 Lines I put together in a 8 Point Conetor from (Neutrik). If plug in the Conector from the external Transformer only the three Lines from the Lamp are passing through. But I have the same conector with three bridges in it and when I pluged this Adaptor in The internal Transformer works again.

Sorry for my bad English.

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted October 26, 2017 04:12 AM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
Perfectly clear to me.
Thank you very much. Very impressive what you did.
A solution like this would be just as nice when a build in version is impossible.
A Transformer can be made out of the Slideprojector gears maybe.
I like to have it all compact and travel ready.

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted November 12, 2017 04:30 AM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
In another lamptopic I received this tip, so I'm going to try them out.
Maybe I can make it a few day's vacation to there.

Matthieu, to give you an idea, a German company does that job for 65 euros but of course you must add the shipping costs http://www.ffr-film.de/index.php?page=elmo&language=eng

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted November 18, 2017 04:44 PM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
I did ask them to transfoirm my projector to the Xenophot version and asked them to add a bigger travo, but they said they do not change the travos and that this Xenophot 24V/250W will work with the original one normally and that it depends on the Watt the local net will put out.

We have 230V, but I cannot believe this has something to do with this.
Also strange, because here on the forum a few worn me not to change the 200W to a 250W, because it will give problems.
I have a GS1200MKIII which is the latest version, so doesn't have this projector a better power suply?

They also say I will get a bigger light output with the HTI tecnologie. Not sure what to expect with this?

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Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006


 - posted November 18, 2017 05:20 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
Matthieu

Its the amps that is being drawn out of the transformer you have to be carefull about.

....200watt at 24volts will draw 8.33amps
....250watt at 24volts will draw 10.41amps

The projector transformer was designed for the 8.33 amps, however because of the projector age, its not a good idea to try to push it to get extra amps out of it. It may work, but if you overload it causing damage to the transformer you will be in the "poo" big time [Eek!] [Smile]

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted November 18, 2017 05:33 PM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
I cannot believe a company like that converts a GS1200 like this, wwhen it is so dangerous.
They only replace the lamp 10mm backwards and exchange it to a Xenophot of 250W.

I was really hoping for a better conversion.
They do change shutterblades, but I so want the white light of xenophot.

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Graham Ritchie
Film God

Posts: 4001
From: New Zealand
Registered: Feb 2006


 - posted November 18, 2017 09:38 PM      Profile for Graham Ritchie   Email Graham Ritchie   Send New Private Message       Edit/Delete Post 
You really need a safety margin with a transformer eg if you are using a 250watt lamp its best to have a transformer rated much higher say 300watt or more. The thing is with the GS1200 we just dont know what the specs of the transformer is for the lamp. Everthing is built at a cost, and the GS1200 is no exception. Transformers that I have come across basically the more you pay the higher the specs ie more wattage.

There has been a number of people use the 250watt lamp instead of the 200watt I guess without a problem. but is it worth taking the chance? what is the tranformer of the GS1200 rated at? and do you have that safety margin?

Another thing if the GS1200 is only capable of 200watts, but no more, its not going to give you the extra amps you need for the 250watt lamp, so you wont get the benefit of extra light.

Anyway thats my theory [Smile]

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Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017


 - posted November 19, 2017 02:25 AM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
Graham I agree with you.
After running two Hours with long Arms and big Reels
i opened the rear Cover and the Transformer was very Hot.
At that Point I knew that I need an external Transformer.

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted November 19, 2017 04:47 AM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
THey say the transformer can do it. It is a company that is experienced with converting Elmo's, but I don't know them and how good they really are.
http://www.ffr-film.de/index.php?page=elmo&language=eng
For €65 they replace the lamp for me and also do a few other things as well, like replacing the shutterblade for a 2, 3 combi and they have a metal filmguide as well.

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Thomas Knappstein
Expert Film Handler

Posts: 124
From: Erwitte, Germany
Registered: Oct 2017


 - posted November 19, 2017 10:22 PM      Profile for Thomas Knappstein   Email Thomas Knappstein   Send New Private Message       Edit/Delete Post 
May be that the Transformer can do this. But an external one is much better to handle different Bulbs.

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted November 20, 2017 04:51 AM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
That is probably so.
Hmm, I don't think I'm skilled enough to do this myself proparly, so the projector keeps its looks.
No company nearby can do this and I rather bring the projector myself.
I'll ask them, altough they think it's not necessary , if they still wanna do the instal for me.

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Paul Browning
Phenomenal Film Handler

Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011


 - posted November 20, 2017 06:28 AM      Profile for Paul Browning   Email Paul Browning   Send New Private Message       Edit/Delete Post 
Some disco lighting use the standard 24v 250w toroidal power supply, and as Graham mentioned in another thread slide projectors use this lamp config, so could be picked off ebay for little money, all you would need to do is adapt the wiring to suit the elmo GS.

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Matthieu van der Sluis
Master Film Handler

Posts: 373
From: Barendrecht, The Netherlands
Registered: Aug 2017


 - posted May 10, 2018 03:22 AM      Profile for Matthieu van der Sluis   Author's Homepage   Email Matthieu van der Sluis   Send New Private Message       Edit/Delete Post 
By using this 24V DC transformer on the outside, will the wrire still give distortion to the sound of the GS1200.

https://ledstrip-specialist.nl/Transformator-voor-ledstrips-20A-480-WATT¤cy=EUR&language=nl?gclid=Cj0KCQjw28_XBRDhARIsAEk21Fi0OGKfhmo1nWOfwAr-O0MnIIO9MtzQGSBGM7sNxCe6b5FNyeHb kVUaAtcrEALw_wcB

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