I tested two samples of each, and they are both within 0.1v of each other. I see that much variation or more from different emitters from the same piece of tape. I also only tested at 3.9A, so things may be much different at higher of lower amps.
I am not kidding when I say that this does not look green to me. It really doesn't. The bare LED doesn't, and I put a lens up to it and shined it on the wall and it doesn't look green. I asked Lisa and a friend that is here today if they thought one looked different than the other (not knowing which one was the new or old) and they couldn't really tell.
Here is a macro shot of the new and old (note that there is some perspective shift):
New
Old
Even despite the perspective shift (there is some) you can tell that the die size is slightly different.
So, for the small sample size (only 2 emitters from 2 batches):
Thanks for the test but I am not sure what you want to tell with it?
Are you actually want to tell that new XP-G2 is good in your opinion?
It seems like you put some kind of lacquer on dedomed emitters (that kind of treatment leads to bit cooler tint) Vinz(famos German modder) called that treatment “diamond treatment”.
So RMM… You claim that new XP-G2 is not green when de domed? I just wish to know if anyone here on BLF agrees with you on that?
IMHO it has greenest beam projection I ever seen In my life.
Well i have to argee with RMM, i got 20 of those in here, dedomed like 4 of them( chemicaly, i an hot gas)
Made that photo especialy for that topic
From the left to right:
First is default Olight M3X( from a batch that used V5 1A, my personal shelf queen), the second is C8 ( Ar IOS glass, the new XPG2), third is again C8 ( AR IOS glass, dedomed V6 0D), the last is default M2x( dedomed V6 1a)
Its maybe your overstayed in the gas m8.
Even if they have greenish tint it aint an issue for me, its even good for hunting, ovserving at nights on a long term base
The problem like RMM said is the bigger core and higher vF
Well, I am not going to say that it is as good as the old one. Even if the lumens are the same, if the die is bigger the intensity will be slightly less. I just don't think that the sky is falling and I definitely didn't get the green dedomed tint that everyone is talking about. But we really don't know if we are talking about the same batch, do we? Nope, so it really is just another data point and doesn't mean that it covers all emitters.
I don't use gas. Gas definitely makes more emitters turn green than anything else I've seen. It's heat and a knife. You can do with them what you want, but don't dump chemicals all over the phosphor then get mad when the tint shifts.
But you personally posted this picture of dedomed XP-G2:
I can do de doming in 5 minutes with solvent, I did all types of de doming mentioned on BLF and I responsibly saying that new XP-G2 S4 2B is GREEN upon de doming and lower performer than his older brother (old production process)
Realy? You americans make extremely good Jack Daniels, one can have a 50ml just before bed time, its a sin not to test that m8, hornestly
I am doing exacly this atm, hehe
Anyway, lets hope those Cutters S4s to be from the old ones, or we have to stick to U4/V6 emitters till something else emerge …
Chill out m8, ( have a drink or smth :sunglasses: ) , as i am sure we all agree that the tint isnt the big issue here: yet the throw drop is
Indeed there is a tint shift comparing the old IOS S4 2B stock with the new
Btw Digikey also have XPG2 S4 stock with a prod. date september 2015( several reets, both E1 and E2 kits) but nobody could be sure what exacly are those untill they are tested
Once again I responsibly claiming that batch I tested and send to Djozz (he tested them but he did not de domed them) has terrible green tint (hulk color) and significant lux output loos.
I can say that I do “gas dedoming” 99% of the time…
Its much easier and pain free than other dedoming methods, and yes, tints usually shift a lot to the yellow spectrum… but, the last few XP-G2 S42B dedomes Ive had done been a whole lot greener than usual…
Maybe using hot dedome method remains the same… maybe the problems with XP-G2 dedoming (apart from less throw due to bigger die size) only affects gas dedoming…
Still. Its a bit of a pain…
But currently I am still dedoming XM-L2 U3 1A’s and 1D’s with barely any green shift at all with no problems… Sticking with those for the foreseeable future, as XP-G3 doesnt seem viable for dedoming either…
I will say again like I did 20 times in this thread. I am fair familiar with all de domed methods mentioned on BLF and I used them all (hot gas, hot thinner, hot de dome on 2 possible ways). There is no difference in tint shift between de dome methods if you do them properly!
It is not just maybe… It is 100% confirmed! New production process for XP- G2 emitters makes them de dome unfriendly, they loose performance and you can literary toss them in a trash cause they are worthless piece of trash. And anyone defending Cree is giving terrible information to public.
So with new production XP-G2 S4 2B you will get:
- green tint upon de doming
- 30% or more performance lux drop upon de doming
- unsatisfied costumer
serious performance degradation!
So this is not serious issue? It is one hell of serious issue with new production process emitters.
Cree are bound to release something new that we can use…
XQ-E HI / XP-L HI sort of thing…
I am not writing Cree off yet…
Not many people “de-dome”, apart from people on this site…. Maybe we were just lucky with the last two generations of Cree’s, that we COULD de-dome nicely…
Nobody can write them off. They are no.1 manufacturer on led market. They create, upgrade and in this case downgrade production of leds.
It is big fact that there is no better emitter for thrower configurations than old production XP-G2 S4 2B de domed.
Now that is gone… I did my last 9 old XP-G2 S4 2B emitters N10sivern send to me and now my production stopped.
I will not build something that significantly downgrades throw performance cause I simply don’t know how to explain to costumer that his flashlight is crap comparing to same flashlight his neighbor has? You know Sir… Cree manipulates market by creating “upgraded-downgraded” emitters so I am unable to build something good again… He will just answer: “I don’t care… Refund please”.
Yeah, you might as well go out of business… retire… relax… watch a little TV… play a little board game… read a little more BLF… and enjoy the rest of your days in peace and tranquility. Since, obviously, there’s no other way to get good throw other than using an old style XP-G2 in a flashlight. :person_facepalming:
Look, I get it. You’re supremely peeved that a component you trusted in and depended on has changed. I know how business works (well, sorta). You’ve optimized your workflow, figured out all the things that can be figured out. You’ve made your job as simple, easy, effective as can be. All so that your product can be as perfect as you can possibly make it. And now all that is gone.
Ok, so how about moving on and figuring out what you ARE going to do, instead of whining about what isn’t there any longer? Venting can be fun at times, but it really doesn’t accomplish anything. Anybody wanna talk about finding a solution to luminarium’s dilemma? Anyone know where to get old stock genuine XP-G2 S4 2B? Or a possible workaround using current emitters?
I just received my XPG2’s (different bin) from FT but can’t tell anything yet. I need a better magnifier as my old plastic eye loupe has gotten foggy over the years and I can’t see the needed details. Hoping I’ll be lucky though!
I think we should remember that Cree never intended for us to dedome; they build emitters for use as-is so it was just great luck that the XPG2 worked so well for us. Cree is our friend, not our enemy, and maybe there will be a better lucky break coming along from them in the future. If there is then I’d suggest buying it in massive quantities to defer the inevitable changes the future always brings.
I have great faith in us that somebody somewhere will find a good substitute for the old XPG2, we’re a persistent bunch of folks!
Well you are certainly right about business method.
But don’t be sarcastic about old XP-G2 S4 2B replacement emitter. So would you be so kind and recommend replacement emitter cause I can’t find one. Maybe I am whining but there is really no replacement for it… If you want to suggest I am listening…
And of course I would invest even 1000 $ if someone wants to sell good old XP-G2 S4 2B.
So far only N10sivern helped me and sold 9 pcs although he also needs them.
One would expect that future brings upgrades and no downgrades… So stocking old tech emitters in a fear of possible performance drop of new emitters is not a solution imho cause we are all expecting progress as the time passes by. But If I only knew what I know now I would stock them… Who would think this will happen?
Well, I’m sorry. I don’t know of a drop-in replacement emitter for XP-G2 that performs exactly the same. But, there are some very smart people on this forum and a large number of them have experience with a wide range of emitter configurations. There might have to be other tweaks done besides just changing emitters, and even then, it might not be perfect. But, I’d say that there is a good chance that there’s some kind of path forward. And that finding a path forward is certainly going to be a better use of time than talking about the road that was shut down.
One thing that might help is to look at your current build process, techniques, components, host, et cetera and see if there is something that can be changed to help increase throw for the new emitters. Maybe a tighter reflector, or change to an optic, add a recycling collar, or something.
