8mm Forum: EFP Xenon...is there such bulb...?

This is topic EFP Xenon...is there such bulb...? in forum 8mm Forum at 8mm Forum.

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Posted by Winbert Hutahaean (Member # 58) on September 28, 2012, 11:06 AM:

While I am searching on donbulbs.com, I found this

EFP Xenon

Never knew about this.

It is expensive ..$89 each but has 500 hours on it or 10 times than the normal bulb,. So basically hours rate is just the same.

All right..the wattage is still 100w but the whiteness may better.

Have you learned and tried this?

Posted by Michael De Angelis (Member # 91) on October 07, 2012, 01:27 PM:

I'm curious if they run hot and if the bulb needs to strike before
lighting. Perhaps it runs blue before it's fully lit?

Have you contacted them?
Please let us know their reply?

Thanks.

Posted by Bill Brandenstein (Member # 892) on October 08, 2012, 12:39 AM:

These are the HLX-series bulbs, also branded "Xenophot," made by Osram. They are highly recommended for any projector you can fit one to. If Osram ever made an ESC this way, GS owners would be in hog heaven. Only dreaming there.

The presence of "Xenon" does not mean this is an arc lamp. Rahter, the bulb enclosure is filled with Xenon gas, which makes it possible to burn the filament hotter without it deteriorating quickly.

The Eumig 810, using an f1.0 "D Lux" lens, and one of these EFP "Xenophot" bulbs, looks like it's a 150W+ bulb. Not only that, but the color temperature is a tiny bit higher than a normal halogen. However, the Don's Bulbs price is a rape-and-pillage proposition ($89 for one! seriously!) where other outlets sell both the long-life and projection versions for around $7. Just Google for it. My understanding is that the 600 hour life is intended for stage lighting and will have a different look (warmer color, maybe a little less brightness) than the 50-hour version. I have not personally verified this. However, either way it's only $7, and the filament from Osram is a desirable C-8 instead of a C-6, so it's not much to risk losing. Unless you buy from Don.

Posted by Paul Adsett (Member # 25) on October 08, 2012, 07:16 AM:

I agree with Bill's comments about the outrageous prices at Don's bulbs. I priced out a GX5.3 lamp socket there for $67.00, which I can get at TOP BULBS for about $7.00!! [Eek!]

Posted by Winbert Hutahaean (Member # 58) on October 08, 2012, 08:33 AM:

Bill, I don't think this is a Osram Xenophot like you mentioned. And I don't think Donsbulbs rip us off with that silly price.

Donsbulbs also sells Osram Xenophot at "normal" price (well it is not $7 but still below $15):

http://www.donsbulbs.com/cgi-bin/r/b.pl/efp~osram.html

So, I think this EFP Xenon is most likely a different animal.

Posted by Bill Brandenstein (Member # 892) on October 08, 2012, 01:04 PM:

That's good to see, however, that is the standard EFP bulb, not the HLX series version. In the details you'll see it clearly marked as a halogen-gas-filled bulb with no mention of xenon gas. However, the first link clearly indicates xenon gas - but doesn't mention Osram except in the 'cross-reference' box, where Phillips and Sylvania creep in too! Confusing.

Still, I highly recommend any xenon-filled standard-life lamp for any projector you can fit one to.

Posted by Michael De Angelis (Member # 91) on October 08, 2012, 09:33 PM:

How does the multi-mirror lamps compare to the Osram?

Posted by Winbert Hutahaean (Member # 58) on October 08, 2012, 10:20 PM:

I think an old post made by Chip Gelmini explains here:

Osram Xenophot for ST1200's

He says:

quote:
Although I am not sure if I have this right, I think Steve Osborne once said the 50 hour bulb from Osram has a higher level of gas inside the actual sealed bulb which makes for a brighter image.

When placing your orders, make sure you DO NOT use the "slash 5" on the part number ( /5 ) this will be the difference between getting the 500 hour bulb vs the 50. Where " /5 " = 500 hour lamp.

So Bill, you are right...the 500 hours is not for our hobby. It has different color temperature and less bright too.

Folks, let's get back to 50 hours bulb...it is cheaper!

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