Enderman
October 1, 2017, 5:41am
724
Hey Tom? A question, I don’t know the answer but I see something that puzzles me. When have you ever built a single XP-L V6 3D light that made 1800 lumens? If you’re seeing 7200 lumens on the Q8 with 4 of these emitters you might want to check the battery in your lightbox meter.
I’ve seen XP-L2 go as high as 1800, even 2000, but a regular XP-L V6 even in 1A just really doesn’t do 1800, even by itself in a Courui with 4 cells backing it. I could be wrong of course, just saying it seems odd.
It seems like it can pass 1800 with enough current, but it probably can’t sustain it for more than a few seconds in a flashlight.
[image]
I tested the output of the new XP-L led (XP-L V6 2C tint, from illumn.com) compared to a XM-L2 I had in the spare leds box (XM-L2 T6 3C, from Fasttech). Both were mounted on a 20mm copper Sinkpad, the XP-L on a xp-type and XM-L2 on a xm-type.
The introduction to this test is a bit longer than usual, to explain the altered method, up to now I did ceiling bounce light measurements, from now on I will use an integrating sphere.
I built the sphere a while ago, and after quite some testing…
So many of you have seen my test of the XP-L2: XP-L2 V5 Output & Death test by Texas_Ace Over 2200 lumens! Still worked after 15 Amps!
Thanks to CRX I was able to get an XP-L V5 as a comparison.
Same setup as my other tests.
The XP-L Actually made a bit more lumens per amp in the lower current ranges but this is not the whole story. Keep in mind that the Vf is much lower on the XP-L2 and due to this it is pulling less wattage at a given current. This is the reason for the discrepancy. If you …