Idk if that light OP reflector is enough to overcome the donut hole problem. Since it’s a domed version of Luxeon MZ I think it’s safe to assume the tint is probably much more even across the beam though. Would be nice to know for sure though.
So how does one get support from KD about problems?
They don’t respond to emails.
You could kindly ask in this thread. Ban, who owns KD (at least that is what I assume for years now) often responds in this thread with help to his customers.
Again I cannot access KD. Again loading into infinity.
Anybody suffering too?
“The requested URL is not available.”
It’s down for me too…
KD loads fine for me.
Hmm…
That would indicate a problem on the line China-EU… But I’m not an IT guy to figure it out properly…
I’m in Poland now and KD is up for me.
Yep, working again.
Last time it was the same: a short warning off, then off for a few days.
Hope it’ll stay alive this time.
Thanks for all your feedback.
Any chance of high cri neutral white nichia leds ? (219C 319AT 5000K)
Hello Ban,
Could you please get some of these LEDs below?
(B130 variants, please)
Now, these are the best deep and far red LEDs from Luminus (better than Cree equivalent), and you already have a recent driver for low Vf red LEDs with 1 or 1.4A current, which is a good match for these.
These LEDs also have (as I saw) the same MCPCB solder footprint, as the Osram KW CSLNM1.TG, so you could also sell them pre-soldered, with the recent 3030 MCPCBs already available.
How about a poll? “most welcome new led @KD”
Nightwatch NI40 Looked interesting for a second. Always starts on turbo. :person_facepalming: wtf?
I received a bad driver from them. I sent a message through the site and never got a response. Probably not worth the hassle for a $3.50 part.
User e1000 reported a downgrade for the H1-A driver, Nightsword confirmed it. What will happen now on high with modified drivers? Bad, very bad.
I see the H1-A is now “on sale” (can't use coupon then), with an old photograph it doesn't abides by. Most users here prefer quality over cut corners. Cut corners may end up costing us money. 
Incorrect way of believing. Every bit of your money is worth it. If you don't care, parasites will leech you to @#$%.
Or buy via Aliexpress who have their own policies. You pay a bit more but in the event something goes wrong you have an escalation pathway.
5400K 2mm² white flat?
I did not notice that before. KD claims the fcbB46 bin of the PM1 which is indeed the warmest Chromaticity Coordinate Group that is in the datasheet.