I tried that once with a Luxeon Q led and it did not improve throw 
Remember those real inexpensive XPG2’s Fastech sold about 3 years ago? Are those actually desirable in comparison to these new versions?
Except, that photo is not dedomed. That’s sliced, like a HI version. I completely dedomed the XP-G3—bare. The S5 3A dedomed looks just like a dedomed Nichia 219C in tint, also. Probably the two closest tint LEDs I’ve seen, dedomed.
Luminarium. I found something extremely perplexing about this entire ordeal over on my end. Now, maybe I am wrong. Maybe I compared 2 other emitters, that are not the same as your “big” and “small”. But I did compare two “new” and “old” Cree XP-G2s to find this interesting thing. What I found, is that my new Cree XP-G2 indeed had a die that looked larger than my old XP-G2. That is, until I measured them to find that they were the same size. What was actually different about them was NOT the die size, it was the anode/cathode insulator line—a package change—that had the insulator line closer to the die perimeter, leading one to believe at first glance that the die was much larger. But it wasn’t!
Has anyone confirmed this, 100%?
I too noticed the color difference just like was stated; new had more of a dull yellow phosphor color, old had more of a bright fluorescent-yellow phosphor; dedomed. But my two indeed only varied in that line around the die, not the die sizes. Another person has also said he noticed no intensity difference between them. I am starting to wonder if some of this is actually human error/perception-based, and not a die which is larger. I bet that any person would say the “new” die is larger 10 times out of 10 when I put them side-by-side on the table because of this package line change, but in reality with my two, no.
I really don’t think anyone should ever think to go after the person that sold them these LEDs. The LEDs are only “bad” in your mind, as you are the outcast user of them. I read some of that earlier about pulling money back from the supplier and I couldn’t believe someone would want to go after a supplier of something that Cree handed to them under the same specs they had always been dealing with. You can’t expect a supplier to be pulling out his caliper to gauge each LED die size, after dedoming one! That’s just not how this stuff works; only inside of our extremely small hobby-bubble on a corner of the internet does it work in die-sizes and high-kcd throw. The industry works in those very specs you see from Cree, but no where does Cree guarantee a die size, or certainly a lux value that cannot be reached. 
MEM,
Don’t get me wrong… But you did not read a word from this thread. Which person stated that there is no performance difference between them?
New production process XP-G2 has:
- slightly bigger dice or die,
- the number of dots on the die have increased, the phosfor is rougher.
- the tint of the phosfor is a bit more orange with small red bits in it which are absent in the old die
- when de domed it brings lower performance in all flashlight configuration you can imagine
Read first post of this thread you got plenty of info there
But that really don’t concerns me any more… You can think that you got bingo with new production type XP-G2(you are one of rare persons who think so)
What concerns me now is that new XP-G3 also fails to bring performance of good old XP-G2 S4 2B
Djozz that test is more than adequate to me. Not even pure de dome(without slicing) can’t improve it that much.
Thanks Djozz 
Sigh, sigh, sigh… Id also take 100x old batch xp-g2s…
I have 9 XP-G2 S4 2B laying around for a project. I ordered them a year ago from intl outdoor.
Can someone please confirm they are the good old production typ ones.
(Click image for full size)
From the post of luminarium , i think they are the good old s4 2b
Really lucky , I’m searching for 2 without luck
You want to sell some? Of course they are good old ones You have pure gold in your hands
Edit: If some BLF member has good old batch of XP-G2 S4 2B and he/she does not need (or does not like) them I’ am willing to buy them. Please PM me…
God bless Finges and N10Sivern
Why don’t you buy from Cutter ?
All s4 2b on 20mm tpad are old.
He never replied or confirmed he has “old” ones.
He could easy make group buy for us (if he has old reel) and I am sure he would reach 1000pcs order in less than 1 week.
But everyone seems to do business on their way so I respect that.
He won’t make a group buy , it’s obvious because he only send with expensive shipping overseas .
All the 2B stock is from August 15 (asked welight this morning) the same as those Mitko received .
If someone from AU wants to do it it’s something i don’t know .
Ok,
I can understan everything but I simply can’t understand why he does not want to reply in this thread with macro shots of that reel so we would know for sure and risk those expensive shipping. If I am paying expensive shipping than I got to be sure I have real thing
i would be interested to buy some old xpgs if someone will make a group buy.
It seems that Cutter has them but he does not want to reply and confirm with macro shot that they are good old ones.
I would order from him… And it is really not problem to spot differences between “new” terrible(el terrible :confounded: ) emitter and good old one :+1:
Wasn’t this thing the point of the emmiters mitko received ? Prove they are old ones ?
I wish i could buy , but i can’t pay 35$ shipping for 35$ order…
Is simple math…
Take macro shot of that reel… No need for group buy but owner of that store should confirm that they are old ones. No one wants to invest 500-1000 or more $ to get Mr. “New” :confounded:
I paid even more than that but I really need them so I can’t negotiate price
I recomment you Newark, the past year i bought some high CRI cob emitters for my home interior from them, the order was for arround 120$, the shipping 42 via DHL and they tried to charge me 185$ for the ” packing, handling and freight”…
Who knows, maybe they started packaging in stainless steel gold plated boxes or something
If anybody can help out with any old xp-g2 s4’s please let me know. Im looking for any qty available…
Mee too