Ban, did you check your current inventory of XHP35 Hi 4000K 80CRI? If these are indeed 80CRI, could I have a replacement of the two wrong 70CRI ones from last year?
No, I’m sorry. I never created an account on Kaidomain because it works fine to send the goods to my PayPal address. And it was still on the old site when I ordered them and your order conformation mail when the old site was still on, did not contain a summary of the ordered items, just an order nr and the amount of money. There is no way for me to know which of my 2018 orders were these leds.
So there’s no order nr coupled to the leds. Maybe it is in your administration? (I’m sure there’s just one Jos from Amsterdam )
I tested tint of the new batch of KD’s 2700K SST-20 leds, claimed JA3, that came in today.
Kaidomain’s previous batch was JC1, which should have been just above the BBL, I tested the tint here: KD (kaidomain): Deals and new products thread - #1222 by djozz , and, at ~400mA, from above and at 60 degrees the tint was under the BBL, just in the hotspot from a OP reflector it came very slightly above the BBL.
This evening I did the same tint test on the new claimed JA3, which should be under the BBL, and all three tints: straight above the led, at 60 degrees and in the hotspot of an OP reflector, measured almost exactly as the previous batch of claimed JC1 bin.
Also visually I can not tell the “JA3” led tint apart from the “JC1” tint.
This is an extremely nice led if you like 2700K light, nothing bad about that, but this is not good for trusting tint bins that are offered by Kaidomain, no matter where the problem is, at KD or at Luminus. Apparently everything must be checked, which costs money and time.
I bought 7 of these, if I had known that they were the same as the previous batch I would not have bought them, as I still have a few of the previous batch leftover.
This is bad news. It's probably the sourcing. From dealing with other stores, they really honestly believed they had accurately labeled parts, but when pressed, it was totally dependent on the word of the supplier.
I have bought some. Can’t wait.
By the way, if you have some XHP70.2 de domed I would definitely be interested, since I don’t have the skills nor the courage to do it myself.
I really do not know why there is no difference, the resolution of my spectrometer should discriminate between them, and visually next to each other I expect a tint difference too.
In principle the two tested leds could by chance be close to each other because the JC1 and JA3 bin share a corner with each other, but I would not see that as the most likely explanation.
This makes me sad I suppose the JC1 led you got could have been at the same bin boundary as the JA3… Unlikely though and I suspect something is up with KD, their supplier or the manufacturer.
Also, I should have known better to order some before they had been tested :person_facepalming: