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Author Topic: A New LED Bulb for My Pathe Baby
Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted May 04, 2016 10:54 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
I had pretty much given up finding a suitable LED alternative for the lamp in my Pathe Baby. The 10W Halogen was working fine...wished it was a bit brighter...but didn't want to risk burning the film. Well a couple weeks ago I stumbled upon this 6W dimmible LED on Ebay. The shape...the size... the G4 base...heat sync... and the light output looked very encouraging. I just received the bulb today and had to do a quick test.

I added some pics comparing the Halogen vs. the LED image. Although I was hoping it would be even brighter, it's definitely as bright as the 10w Halogen. I haven't found one of this design with a higher wattage than 6 yet...but keeping my eyes out.

See what you think.

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Janice

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Terry Sills
Phenomenal Film Handler

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From: Weymouth,Dorset,England
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 - posted May 05, 2016 01:32 AM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
That's very encouraging Janice. Like you I have Baby which I converted to Halogen, but I have to keep nonstop cranking to avoid burning film. I'm sure it's just a matter of time before suitable LED's become available for many of our projectors.

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Janice Glesser
Film Goddess

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From: Sunnyvale, CA USA
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 - posted May 05, 2016 02:35 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
So far this is the best one I have found Terry. With this bulb you can stop turning and there is absolutely no heat. No more worries about burning frames. It only cost $2.90 USD with free shipping from China. Can't beat that [Smile]

Here are some more screen captures using this bulb.
http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=9;t=000172;p=7#000154

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Janice

"I'm having a very good day!"
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Terry Sills
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 - posted May 05, 2016 03:08 AM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
Fantastic Janice! Can you give a link for the LED?

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Janice Glesser
Film Goddess

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From: Sunnyvale, CA USA
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 - posted May 05, 2016 10:09 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
http://www.ebay.com/itm/141928424509?_trksid=p2057872.m2749.l2649&var=441062324573&ssPageName=STRK%3AMEBIDX%3AIT

[ May 05, 2016, 11:58 AM: Message edited by: Janice Glesser ]

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Janice

"I'm having a very good day!"
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Dominique De Bast
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 - posted May 05, 2016 10:24 AM      Profile for Dominique De Bast   Email Dominique De Bast   Send New Private Message       Edit/Delete Post 
The price is high but at least the shipping is free [Big Grin]

Dimmable G4 LED 12V AC/DC COB Light 3W 6W High Quality LED G4 COB Lamp Bulb

g4 led 12v/wholesale price/G4 led bulb/3 year warranty
147,05 EUR
Achat immédiat
Livraison gratuite

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Dominique

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted May 05, 2016 10:33 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
I thought the price was really cheap Dominique. And considering how long a life these bulbs have it's fractions of a penny per use. if you're satisfied with the quality of the image then I think it's a real bargain.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Dominique De Bast
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 - posted May 05, 2016 10:36 AM      Profile for Dominique De Bast   Email Dominique De Bast   Send New Private Message       Edit/Delete Post 
Janice, your price (2.90 dollars) is cheap but the one that appears on EBay France : 147.05 euros is exagerate (probably a mistake). [Smile]

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Dominique

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted May 05, 2016 05:20 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
I certainly hope that's a typo Dominique [Smile] You probably could pick up a projector for that price.

If anybody else buys one of these bulbs...I'd really be interested in any feeback.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Dominique De Bast
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 - posted May 05, 2016 05:54 PM      Profile for Dominique De Bast   Email Dominique De Bast   Send New Private Message       Edit/Delete Post 
Thank you, Janice, I could buy one at the "normal" price. They say it will be delivery the last week in May or the first in June. I will check it on my Pathé Coq d'Or. I hope it will work as well as on your Pathé Baby (at that price, I'm not taking any risk anyway). It could be nice if they could make higher wattage. I noticed on your two pictures a big difference of "colour" (both are taken from a black and white film but the "led" one looks really black and white while the "halogen" one looks sepia, brwonish). Does that reflects the result you obtain on the screen or is it just a different camera setting or reaction when you took the pictures ?

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Janice Glesser
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 - posted May 05, 2016 06:59 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
The halogen bulb gives off a definite sepia tone. The photo is a bit more saturated. The LED bulb comes in two types...a warm light and the cool white. The warmer colored LED is probably closer to the look of the halogen. It's what you prefer.

I'm anxious to hear if it worked for you Dominique [Smile]

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Paul Adsett
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 - posted May 05, 2016 07:01 PM      Profile for Paul Adsett     Send New Private Message       Edit/Delete Post 
Another advantage of the LED is of course that you can no longer fry an egg on the lamphouse! [Big Grin]

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Dominique De Bast
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 - posted May 05, 2016 07:28 PM      Profile for Dominique De Bast   Email Dominique De Bast   Send New Private Message       Edit/Delete Post 
I choosed the cool white, I like real black and white. I cannot see any reference on the halogen that is in my projector, it may be a 20 watts as there is a little fan. So a 6 watts led would, in this case, give a lesser bright picture but I like the idea that it limits the risks for the films. The only way to know if it is satisfaying is to try anyway :-)

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Terry Sills
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 - posted May 06, 2016 01:24 AM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
I've just ordered G4 7watt led which hopefully is a little brighter and also gone for cool white. Will be interesting to see how it performs. Coming from China so will probably take a week or so.

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Janice Glesser
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 - posted May 06, 2016 02:10 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Terry be careful....is the lamp you bought the same design just aa higher wattage as the one I'm suggesting with a single chip. If not...my guess is that it won't work and maybe not be as bright as the 6W. Multi-chip lights will not focus the light through the condenser lens properly so the image will actually be darker. I've tried several LEDS in the past and this style is the only one that has actually projected an acceptable amount of light. However this bulb is not as efficient as it could be. This is evident in that a 6W LED should be equivalent to a 40W halogen...and as you can see it's only about equal in brightness to the 10W halogen. This is because all the light is not projecting through the Pathe Baby condenser lens.All LEDs are not equal.

[ May 06, 2016, 11:27 AM: Message edited by: Janice Glesser ]

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Terry Sills
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 - posted May 06, 2016 11:44 AM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
Yes thanks Janice. I did choose a G4 which has a picture of a single chip, so I'm hoping that's what I get. Only £2.38 and free postage, so won't break the bank and if it's any good I will post a link. I know the multi LED lamps are not suitable for our uses but it seems that these single chip lamps are coming on in leaps and bounds.

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted May 06, 2016 02:07 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
I was really hoping Terry you would try the 6W bulb first to get your feedback. Perhaps you could send a link to the bulb you did buy. I'm thinking of trying the 3W also...it's possible it might focus the light beam better through the condenser than the higher wattage.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Luigi Castellitto
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 - posted May 06, 2016 05:09 PM      Profile for Luigi Castellitto   Email Luigi Castellitto   Send New Private Message       Edit/Delete Post 
Janice, I'm a "fan" of tests with the LED on my Pathescope Ace! [Smile]
Not to repeat myself I post the thread where I told about my experiments [Smile]
http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=9;t=000070
I confirm that the LED can make a greater contribution with light, but not always, and especially I noticed that depends on the type of the LEDs and the projector where it is mounted, on someone's better a type, on other other...
For example, on my Pathescope Ac,e this type: http://www.silamp.it/images/20131109131918-20130830113337-g4-led-silamp.jpg
gave poor results, while with the model that you indicated you and with this: http://www.milano.de/files/led_12v_g4_1.jpg
I had good improvements. But with the second model of led I have the edges of the picture may be less enlightened than the center!
I also confirm that, apart from photo with camera, the led COLD WHITE gives a less "brownish" effect and greater "ice" effect light!

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011


 - posted May 06, 2016 08:15 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Thanks Luigi for your comments. All input is important. I think there has been lots of progress in the use of LEDs for these 9.5 projectors. I feel the 6 volt LED I bought will at this point easily replace my 10W halogen. I'm also confident as time and more testing moves forward a solution for brightening the image will also be achieved.

[ May 07, 2016, 10:22 AM: Message edited by: Janice Glesser ]

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Luigi Castellitto
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 - posted May 07, 2016 04:49 AM      Profile for Luigi Castellitto   Email Luigi Castellitto   Send New Private Message       Edit/Delete Post 
You're right!
I think also the important thing is just to keep the same voltage as the old lamp.
For Watts, I have relied the tables online tahta reporting equivalent LED light comparison with halogen or other older technologies.

Keep us updated on your other experiments, it is a subject that interests! [Smile] My Ace, in basic, is not very bright as a projector, I would like a greater light (without melting anything, of course! [Big Grin] ).

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Terry Sills
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 - posted May 21, 2016 04:21 AM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
Janice
I just received the 7w LED lamp and tried it first in a Muray editor to compare it with the 20w halogen fitted. A little disappointed I have to say. Not as bright and gives a lilac coloured hue as opposed to the White/yellowish colour of the halogen image. Maybe because the editor has no reflector and I have yet to try it in my Baby. I don't know whether yours is the same but this single chip seems to be made up of several tiny LED's only perceptible when it is lit. Here is the link for the one I purchased
http://www.ebay.co.uk/itm/201468588655?_trksid=p2060353.m2749.l2649&var=500648157632&ssPageName=STRK%3AMEBIDX%3AIT

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted May 21, 2016 09:48 AM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Hi Terry thanks for the feedback. Sorry to hear the lamp wasn't what you expected. I suggest you try the one I purchased to compare. I have been pretty satisfied with it so far. The color is a nice black and white as I show in my screenshots. If you like the color to be a little more yellow then choose the other color. I too wish it was a little brighter however it's equal to the 10 watt bulb and cool so at this point it's a decent replacement.

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Terry Sills
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 - posted May 22, 2016 03:16 PM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
Janice
I suppose the problem is that I am comparing the led to a 20w halogen and it just not come close. Having said that I have tried it in my Baby and it does work better than in the editor. Probably because the Baby has a reflector built into the lamp house. Still the 'lilac' hue but quite an acceptable image and no fear of burning a still image.

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Janice Glesser
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From: Sunnyvale, CA USA
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 - posted May 22, 2016 08:28 PM      Profile for Janice Glesser   Email Janice Glesser   Send New Private Message       Edit/Delete Post 
Well...yes Terry...I was only comparing it to the 10W and only in the Baby. Until they design a G4 LED with a small thin filament-type bulb that can use the built-in reflector I don't think a much brighter image can be expected. I've seen a LED filament-type bulb used for chandeliers...so they are getting close [Smile]

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Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Terry Sills
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 - posted May 23, 2016 01:40 AM      Profile for Terry Sills   Email Terry Sills   Send New Private Message       Edit/Delete Post 
That's right. We have to remember that LED lighting is still in its infancy and great advances have been made to date. Who knows what the future will bring. Exciting times for us trying to overcome the problems associated with old inefficient and rare lamps. Thanks for bringing this led to our attention. Keep up the good work [Smile] [Smile]

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