Oh, no, I trust your efforts. The numbers just seem high compared to the measurements I get. It’s entirely likely that we’re just measuring with meters that are off a bit in opposite directions.
One thing to try just to make sure, remeasure one of the lights at 20+ feet and see if the numbers change much. With most zoomies it doesn’t make much of a difference with my meter after 15’, but I’ve had weird readings sometimes if too close.
You interested in us putting together two identical lights, measuring them, and then shipping to each other to test the differences between our meters? I think I have a spare 1504 host around here somewhere…. :bigsmile:
Thanks so much for the very thorough testing’s n10sviern
It confirms my initial train of thought that the xml2 U4 wouldnt be far behind the xpg2 s4 in terms of throw. As well as the relationship between lower current draw with the newer emitters and higher output, obviously pertaining to higher vf.
Since you’ve done so many hot dedomes, what sort of temperature and amperage range would you say is ideal to dedome xml’s and xpg’s?
It’s possible, but the light is about 8” above the table. Over 6 feet, it seems it would be minimal. I’m gonna try something new. I’m going to place the meter on the floor and hang the light 6’ high. It’ll be easier to adjust the meter.
It is a emitter lottery, lens lottery and luxmeter lottery. I'm surprised that the numbers from different people are generally so close to each other :-)
The 1503 was about 40% of the throw of the 1504 on both the XM-L2 and XP-G2. One was like 39.5% and the other 40.5%. Regardless, I think this consistency confirms my 1504 readings a little. As for the 1505, it didn’t like the XP-G2. I check my measurements two different times and got the same 34100 lux. Due to this, the XM-L2 U4 wins with the 1505.
No idea, in a T20 the XP-G2 is about 30% higher candela output than an XM-L2 from the dozen I’ve put together. Were they tested in the same host? Your XP-G2 numbers are spot on with what I get with an S2 2B in a T20, so either that’s low on your light considering the S4 2B shows higher output than an S2 2B, or your XM-L2 measured high.
Edit: your XM-L2 number is about 60% higher than I’ve ever measured a direct drive XM-L2 in a T20. I’m betting something is going on with that number.
I wonder……I didn’t use any retainer on the 1505 as I didn’t feel like soldering to the pill when changing out emitters. I wonder if the XP-G2 separated from the pill slightly and the LED was getting heat soaked. Hmmmmm
Ha, no duel. I’m sure you will beat me to 500. I just wanna get to 500 just to say I could and did.
Oh, by the way, did you see the amps for the XP-L V6’s? I think it was you having issues getting the current out of them. I know there is speculation they are really V5’s from LEDDNA, but 1 bin should not cause that huge of a difference should it?