Tint mixing light... 2B vs 3A?

Flashlight Modding and DIY Parts
1

I am planning on modding a 7 or 9 emitter SRK with a few different tints of XPG2’s. I am trying to decide between an R4-3A and an S2-2B for my “cooler” tint. Any thoughts? I have read that cool emitters tend to overpower warmer ones. Is the 2B too cool? I plan to use some Nichia 219’s and warmer (6A) emitters as well. My only hesitation over the 3A is that it is only an R4 flux bin, and I want this light to be bright. Is there that much difference between R4 and S2?

None of them will see more than 1.5A, probably more like 1.2A each. Should they be fine on cheap aluminum mcpcb’s, or should I spring for DTP copper?

2

Aluminum will be fine at that drive current .

3

Updated OP

4

if you are going to use 6A tints I would use 3A, 3B, 3C or 3D tints, IMHO the 2B is a bit too cool

5

Sounds like you will be making a pretty nice light. Hopefully, RaceR86 is around because he has a lot of experience with mixing emitter tints.

Although cooler tints tend to be higher binned and put out more light, I find you don't need many very warm emitters to dramatically shift the tint of the beam. I would suggest using two 6A's in your mix.

6

Right now I’m leaning towards the 7 emitter light, with 3 matched xpg2’s and 3 Nichia’s around the outside, and one XM-L 6A or 7A in the middle.

In this configuration, would you go for the S2-2B or the R4-3A for the xpg2’s? I’m thinking the 3A’s.

7

That sounds like a great idea. I guess I would go with the 3A's because the one 6A. Especially if you use the newer cooler 219. If you used the older "rosey" 219's, I would go with the 2B's

8

The Nichia’s I got are definitely cool, but still kind of rosey. Maybe like a 3U or 4R on that chart.