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Its a question of approach/philosophy.
Gene started at 5000K and when he got complaints about 'blue in the beam', he changed warmer until the complaints stopped. He settled on 4000K during this process and has stayed with this color since. Other shops are happy with 5000K and avoid complaints about to yellow. We 'split the difference' between yellow and blue by going with 4500K.
In reality, CREE is not as good with color control as Nichia so no CREE based K value will be truly white, especially this soon in the life cycle of a new LED. Go with Nichia for optimum color. Go with CREE for power/lumens.
Any idea on the lumens rating on each version?
Gene started at 5000K and when he got complaints about 'blue in the beam', he changed warmer until the complaints stopped. He settled on 4000K during this process and has stayed with this color since. Other shops are happy with 5000K and avoid complaints about to yellow. We 'split the difference' between yellow and blue by going with 4500K.
We're currently delayed by 'perfectionists dilemma'. 4000K XPG2 are available and this is a standard Malkoff neutral so we have neutral Malkoffs. Premium bin 4500K XPG2 (our standard triple neutral) are taking longer to find in quantity than original estimates.
What is the LED driven at in the M61N-XPG2? I see it draws only 650ma, but a buck driver is used?We are working to restock and may have more of the main model by the weekend. As the XPG2 is more efficient, we are also doing the first ever LLLL model. Other models may follow.
HO and SHO have the same boards and power levels, just different LEDs:
HO - XPG
SHO - XPG2
So there's no way to make an XPG2 HO at the standard power levels.
What is the LED driven at in the M61N-XPG2? I see it draws only 650ma, but a buck driver is used?
My only regret is that Gene uses brass instead of aluminum. That makes it an ounce or so heavier, and I am not sure why he uses brass vs. aluminum. It would seem aluminum would be better than brass on every front, but this isn't the thread for that. I look forward to my module!
What is the CRI of this module?
No, brass is not as conductive as aluminum, but there is something to be said for mass, too. Think of it as extra 'space' to store heat, so it doesn't need a large body to dump into.
I don't have specific CRI values (70-80), but here's a good post on 61N color:
http://www.candlepowerforums.com/vb...hread-Part-2&p=4083026&viewfull=1#post4083026