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Osram HMI Lamp type for Arri Apollo 4k


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#1 Marc Roessler

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Posted 08 August 2009 - 05:36 AM

Hi,

anyone happens to know what lamp type is needed for an ARRI Apollo 4k HMI?
It is the old "double ended" type, but which one? DE? DXS? XS? GS? Which of these are equivalent?
The original one seems to just read "HMI 4000W"...

Thanks & Greetings,
Marc
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#2 Marc Galerne

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Posted 10 August 2009 - 03:29 AM

Hi,

anyone happens to know what lamp type is needed for an ARRI Apollo 4k HMI?
It is the old "double ended" type, but which one? DE? DXS? XS? GS? Which of these are equivalent?
The original one seems to just read "HMI 4000W"...

Thanks & Greetings,
Marc


Hi Marc
What you need is a HMI 4000W / XS OSRAM product number : 4050300216553
The original, you are right, used to be named HMI 4000. They introduce the DE (for Double-Ended) when they came up with the Single-ended versions of 4Ks.
DXS was the reference they started to use when they introduced their Higher temperature seal, meaning permissible temperature at the seal of the lamp is higher: 450°C instead of 350°C before. They are not using this any more, they just use XS.
GS is for Gap Shortened but there is no 4000W with a short gap only 575, 1200 and 2500 W.
FYI, you can get these from other bulb manufactuers as well:
Philips (MSI 4000),
Sylvania (BA4000DE HR)
GE/KOTTO (CSR4000/DE).
I hope this helps.
Marc G.
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#3 Marc Roessler

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Posted 11 August 2009 - 02:17 PM

Hi Marc!

Thanks for your help - your list of the exact types available does help me!

Concerning 4Ks as "short gap" version, I have found such HMIs offered - this was what initially confused me. Are those 4Ks short gap in general (thus no need for the GS lettering) or don't they exist at all? (In that case, they'd be mislabeled on the pages where they are sold)

I found some 4Ks marked "GS" here (among others):
http://www.maximum-e...e852dc43db220e4

Thanks,
Marc R.
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#4 Marc Galerne

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Posted 12 August 2009 - 05:58 AM

Hi Marc!
I found some 4Ks marked "GS" here (among others):
Thanks,
Marc R.


I don't know. I just know it's not in Osram catalogue anymore...? I guess the 4K Double ended only exist in the short gap version and they felt they had no need to call it GS anymore especially since they are adding XS now...?
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