Cree changed production process for XP-G2 emitters!

180k is pretty damn low, i got those with XML2 U3…who knows, maybe a bad batch realy 180k mcds isnt okay
You sure bout the 1503 lenses quality? I gave up on those especialy for the lenses- too many bad ones, too many came broken, i got boored with it

Yes I got 25 bad lenses from 50 pcs order (i PM you about that), after that I wrote complaint and got 25 hand selected lenses directly from factory for free, and they are all good ones with old xpg2s42b batch. So I can really recommend UF factory(Rubby) cause they care about costumers.

I found Djozz old picture 1503 vs B158(done with xpg2s42b) which confirms what i talked about. Am I right Djozz?

UF1503 tint is creamy nw white with just bit green on the edges:

I called one of my buddies to help me to take pictures, and he also took one of his XP-G2 S4 2B dedomed emitter so I did pill with his emitter.

I know now that I did not get XPGS42B emitter for sure! I will complaint to Hank about that. That is no way to treat old costumer!

Differences are huge… So with this experiment I confirmed to myself that real XP-G2 S4 2B has one of the nicest de domed tints(neutral creamy white with just bit greenish pigment)

left “new” batch XPG2S42B emitter right is real XPG2S4B emitter

So I have terrible start of the year. First strike on me is that 25 out of 50 1503 lenses were bad and I complaint and got replacement hand selected lenses and they are all ok now. UF factory is positive to deal with.

And now this: I did not got XP-G2 S4 2B emitter… And this really drives me crazy… I cant sell 250 kcd light as I stated to my costumers. I can only sell 180 kcd light with ugliest green tint world ever seen…

The craziest thing about wrong emitter issue is that I blamed myself, and dedoming methods I use… So I really dedomed about 15 of them with different dedome methods (i dedomed them like a mad man). Each and one of them is perfectly dedomed and each and every one of them looks green with significant less output comparing to real XP G2 S4 2B.

My experiment with this crap emitter also showed that there is no tint shift with gas/thinner/hot method. Remember that guys… NO one can convince me in opposite now.

So far more than 100$ is thrown in a wind…

I will see how Hank will react on this.

That is not good. Please keep us posted on how you worked it out with IO. I’ll post pictures of my XP-G2’s as soon as they arrive.

I send email to Hank. The thing is that visually you can’t see any difference between them when dedomed(at least I can’t see difference).

Differences are noticeable only when you put them in a same host, on lux meter, and wall tint difference (in this case it is so huge difference so even 80 year old grandad could notice that without glasses).

So if you do not have spare pills or multiple hosts of same flashlights like I have it is pain in a but to find the truth.

Update (Hank answered):

We only buy sealed reels directly from CREE, and there is no 1A or other LED you said in stock.
Those S4 2B LED that the customers received could be from different reels
since we always have fresh stock every month.

2B as you know on the ANSI white chart allows some variability on both axis,
so CREE does not guarantee an absolute tint
even if it is called 2B, even us we rate it as variable 5700-6100K,
which is only the variability of the X axis, then there is the variability on the Y axis.

That being said, we do not guarantee any tint shift/different for the dedomed LEDs.

Brightness output and forward voltage are under certain tolerances also, they vary slightly.

As for your doubt of lower bin LED, I would suggest you to send random 2 pcs domed/intact S4 2B LED to Djozz
for testing, and compare with his result, if the result is not in the range of the tolerance
that CREE stated, then we would agree there is some “problem” there.

Otherwise, there is no proof to it.

Regards.
Hank

My answer:
Hank there is no doubt in lower performance and tint shift at all. They under-perform for more than 30%

As I said I can chew green tint but I can’t chew lower performance.

I will send them all to Djozz if he will agree cause they have no use to me.

I want to ask you one more question here…

Do you exclude possibility of your or your worker mistake? I mean is it possible you send me wrong XP-G2?

So Djozz do you agree with this Hank suggestion? I’ll sent you rest of them (about 15 pcs) for free and you never and ever need return it to me.

Hehe, it seems that djozz became somekinda “led standart” arround the torch world, great for him and us- he should buy a real spectrometer you know, Assensetek or something,they shooul discount him at least 50%

luminarium iaculator

Thats realy strange, you see i usualy rest every batch that i got with Assensetek Lighting passport, so far Only IOS and KD emitters were as claimed, FT cant be trusted, they sent emitters randomly whatever they got in stock i presume

Well, it could be Cree`s fault at the end…we all know VW diesel story, i wont be surpriced if Cree do the same thing , they are big enough, they can affort that :slight_smile:

So far Hank had good goods… Last good batch of GP-G2 S4 2B were from his store. I bought over 800$ from his store but now… Until I resolve this issue I really can’t be confident to buy again. I did not asked him for refund either…

I only asked him to send me real XP-G2 S4 2B emitters which I will pay cause I have waiting costumers for flashlights, and I can’t deploy them flashlight with low performing emitters he sent.

So if I can’t confidently buy from him from whom to buy now?

If anyone has old batch of this emitters ordered before November 2015 and they don’t need them I am willing to buy them.

And of course I agree we should all buy Djozz more expensive testing equipment. Buck or two from all of us and he’ll get it.

Try to talk to 3tronics. Maybe his batch is older. Don’t know his source but it is worth a try.

You just reminded me :slight_smile: … I bought last 8 pcs he had couple of month ago XPG2 S4 2B bare was £2.25 each + 8£ shipping. They were good although a little rusty from bottom layer of emitter. Will ask him…

I took one more real xp g2 s4 2b from friend and now i took comparison picture with fu duck xp g2 s4 2b

left real xp g2 s4 2b(thinner dedomed) right f ducked xp g2 s4 2b (gas dedomed)

It seems that right one is slightly larger? WTF? with slightly more yellowish phosphor?

I would really be glad to send them all to Djozz…, Something terribly wrong here…

Happy Easter! :slight_smile:

Dont you have a macro mode ? a cleared photo would be nice - the layer`s colour could be changed due to the chemistry you know

O.T

Out orthodox Easter this year is a month after today, i never understood how do they calculate it every year but anyway Happy Easter to our catholic , protestant and any other cristian brother arround the world.

On that day we usualy say: “Jesus has risen” like a greeting

The size differences in the two dies are definitely noticeable.

Will try to take better pics tomorrow… This were taken under room lamp. I know something is bad here… It is either Cree or Hank mixed something up…

Newest f ducked XP-G2 S4 2B looks larger with more yellowish phosphor than real XP-G2 S4 2B

Anyway I hope after Easter holidays Djozz will manage to see this “curious case of xp-g2 s4 2b emitter”

I still have 15 domed ones for testing + 14 dedomed if needed (I killed one with hot dedome)

Do you have a digital caliper? Could you measure the difference between dies? Macro shot would be nice.

I’m surprised that Hank Wang would refer you to djozz in that way. Djozz spends a lot of time doing testing and sharing the results with us. I think he’s made it clear that he has a finite amount of time to spend on this hobby (same as most of us). If djozz offers to help you out that’s one thing, but just expecting djozz to test LEDs for Hank/customer to clear up a $100 dispute is ridiculous!

I agree, clear photos would good. Ideally well lit and directly top-down photos together separate with a scale (ruler / etc) right next to each LED package. That would be great.

I think if I kindly ask Djozz he will do all that for all of us. I did not opened dispute and I did not demanded refund from Hank Wang. I don’t want to be rude but I sucked here and I forgot on that 100$.

I don’t have photo skills or quality photo camera. This was the less blurriest pic I managed to take.
I will try to take better one during daytime.

So here is the riddle:

I am little yellow bugger, totally out of dimensions and I pretend to be king of thrower emitters sold from one of the most respective flashlight parts store on the planet and I suck the blood out of Luminarium Iaculator on Easter… Who am I?

If you send some of these leds to me, I will do an output test on a domed emitter, because that is the state in which these leds are sold and guaranteed to work. I have a nifty little device on order (will take another month to arrive) that can measure colour temperature and CIE1931 values, so when it arrives I can even tell you if the tint is indeed (close to) a 2B.

About given equipment: this is logically followed by more work and the feeling of being obliged to do things with it, neither of which is in agreement with my idea of this being a hobby :wink:

It’s the first Sunday after the first full moon after the spring equinox! Honest. Equinox was Saturday 19th,full moon on Wednesday 23rd so today is Easter Sunday.

Thank you very much Sir!

I will send all non dedomed to you because if they are total useless for me. They will be total useless to you for sure :slight_smile:
Please don’t be angry but I would also like you to test and compare them to real XP G2 S4 2B in dedomed versions.

As I promised… New day pictures are here (I can’t be better than that and Djozz will test them and he is way more qualified for that than I )

Here is Real XP-G2 S4 2B on the left and F ducked xpg2s42b on the right:

Here is real XP-G2 S4 2B surrounded by f ducked xpg2s42b attackers that wants to dethrone it :slight_smile:

I will just say King is only one baby! And he’ll rip your hearts out!

So enjoy guys in this drama.

So King of BLF Djozz will continue with further review of “attackers” :wink: