LUMINUS SST-20 3500K 95+ CRI LED EMITTERS [GROUP BUY]

BlueSwordM · 2018-12-07T12:43:35.000Z

I wanted to do this groupbuy too, but with 3000-4000k LEDs instead.

The reason for this would be for the chance of tint mixing, getting the advantage of getting a beam that is always the BBL.

hodor · 2018-12-07T12:58:39.000Z

I might be interested in a few, depending on shipping cost to the UK.

Thanks azhu!

AEDe · 2018-12-07T14:40:33.000Z

If it possible to ship via EMS (or may be some other way but not UPS/DHL/Fedex). I am in for 30pcs

HONDARIDER · 2018-12-07T14:46:22.000Z

I will commit to 10.

azhu · 2018-12-07T15:40:06.000Z

slowtechstef:

Hi azhu, that are 2 good looking Frelux Energy1s
How easy/difficult was the emitter swap?

About the SST-20 group buy: which specific bin where you eying?

I myself have a Kaidomain triple 3000K SST-20. And while CRI, R9 (deep reds) and beam uniformoty are great, personally I think tint of my SST-20s is on the yellow side, while I prefer rosy. Kaidomain states on their website they sell the J3 HD2 bin which should be below BBL, but to me doesn’t look like it. Djozz also mentioned something about tint of the SST-20 he tested.

Edit: seems more people are interested in the binning

The emitter swap is super easy. Just remove the pill, desolder the wires, and reflow the old emitter out with the new. Then reassemble in reverse order.

As for binning, I don’t think I can choose the bin. I’m selecting the tighter binning group closest to the BBL line so there should be a good chance it will not have an ugly tint shift even if it’s slightly above the BBL line. I have the 4000k SST-20 and the bin was above the BBL line but the yellow isn’t super noticeable. Every batch will be different so I’m hoping to get some below the BBL line.

azhu · 2018-12-07T15:45:03.000Z

g_damian:

I’m in for 13, but only if they are on or below BBL. How much does shipping to EU cost?

hodor:

I might be interested in a few, depending on shipping cost to the UK.

Thanks azhu!

AEDe:

If it possible to ship via EMS (or may be some other way but not UPS/DHL/Fedex). I am in for 30pcs

For international, prices usually vary between $10-15 USD for USPS First Class International Package. It’s $14 to Italy for example.

djozz · 2018-12-07T15:45:16.000Z

I post leds in a small bubble mailer as a plain letter, no tracking. From the Netherlands that is a one euro stamp. Does it work like that in the States too?

azhu · 2018-12-07T16:04:08.000Z

djozz:

I post leds in a small bubble mailer as a plain letter, no tracking. From the Netherlands that is a one euro stamp. Does it work like that in the States too?

Yes I could do that too but it will be at the risk of the buyer should they choose to go that route. If it’s just for a couple LEDs, probably not a big risk but if ordering more, I’d recommend something with tracking.

Slim_Pickens · 2018-12-07T17:10:51.000Z

I’m in for six.
Thanks for organizing this, 3500k is not a common CCT.

azhu · 2018-12-07T18:19:53.000Z

Slim Pickens:

I’m in for six.
Thanks for organizing this, 3500k is not a common CCT.

After using the Nichia sw35, I’ve come to really love this CCT, especially at night outdoors.

SKV89 · 2018-12-07T18:52:09.000Z

Thanks for organizing this. I would be in for 40 (not that I need that many) just to support this if you could pin down a tint bin. The 4000k sold on KD is the FB4 bin, which has some green. Even the FA3 bin used by Fireflies, which is supposed to be at or below the BBL was reported to have some green/yellow in it and requires a minus green filter to perfect. I think it would be safer to aim for GA1 and GD4 tint bin.

I love the 3000k sold at KD with HD2 tint. It is a bit yellowish at lower lumen modes but at higher outputs the tint definitely drops below the BBL for a neutral/rosy without yellow tint. It is not as rosy as the E21A 3000k though.

Slayer1 · 2018-12-08T03:04:33.000Z

10pcs for me.

JaredM · 2018-12-08T04:31:37.000Z

Mark me down for 12 please.

I have both 3k and 4k and seem to believe that 3500 may just be the sweet spot for these.

Thetasigma · 2018-12-08T04:56:04.000Z

Outside of Kaidomain they aren’t sold in individual bins, only the step binnings, the tightest bin available which is what this GB is for, will include GB4, GC1, GA3, GD2 tint bins. The SST-20 offers such excellent mix of CRI and great throw that it is hard to complain about even on the bins just above BBL.

I am in for 25.

dmsoule · 2018-12-08T05:01:06.000Z

I’m in for 10. Love 3500K, but so hard to find, thanks!

SKV89 · 2018-12-08T05:19:02.000Z

You can also get 3500k Oslon Square 92CRI in 5Q tint bin.

It is two tint bins below the BBL but in reality, it looks like it is on or just a bit below the BBL. It looks great but not as rosy as E21A 3000k mixed with 4000k.

djozz · 2018-12-08T10:47:26.000Z

So maybe it is not really the 5Q bin that you got? It is nice that these 3500K Squares are for sale anyway, for a good price.

SKV89 · 2018-12-08T17:56:51.000Z

djozz:

So maybe it is not really the 5Q bin that you got? It is nice that these 3500K Squares are for sale anyway, for a good price.

I bought multiple items from that seller and they’re pretty legit so I have no doubt that it is 5Q. It’s just that often times tint bins that are shown as being below the BBL in manufacturer’s spec sheets are actually above the BBL like in the Samsung LH351D case and as reported for the SST-20 4000k FA3 tint used in Fireflies lights. It takes 2 bins below the BBL to result in a tint at or just below the BBL. I would say the Oslon 5Q is comparable in rosiness to XP-L HI 5A/5D tint and a little less rosy than XP-G2 5A/5D tint.

The Oslon Square 96CRI 2700k 6U bin is beautiful and does look like it is at or below the BBL. Seems like tint bins for 3000k and below are more reliable like the SST-20-W 3000k from KD.

AEDe · 2018-12-09T14:42:56.000Z

Sorry, I found more interesting offer Canada based(shipping is 3 times cheaper) so
you can remove me from the list.

azhu · 2018-12-10T15:52:47.000Z

We are over a quarter of the way there! Let’s make this happen. Really want to try them 3500k