Anyone tryed out the new-ish U2 XML yet?

12 posts / 0 new
Last post
DasFriek
Offline
Last seen: 9 years 10 months ago
Joined: 06/26/2011 - 16:26
Posts: 294
Location: Ohio
Anyone tryed out the new-ish U2 XML yet?

I have a few coming from KD iirc but ive seen nothing about how they project or color from anyone that owns one yet.

So whats the scoop? 

Tas62
Offline
Last seen: 6 months 3 days ago
Joined: 12/26/2010 - 17:57
Posts: 494
Location: Tasmania, AUS

Pale blue wall..T6 left (sm reflector) U2 right (OP reflector)

Main difference I could see is that the U2 has no green tint (unlike my 3 T6's).

FlashPilot
FlashPilot's picture
Offline
Last seen: 7 hours 58 min ago
Joined: 05/10/2010 - 16:07
Posts: 4829
Location: USA

Tas62, where did you get your U2's from? Cutter? I need a few mounted on stars but dont want to pay the huge shipping fees from Aus. Im also leery of the chinese offerings since they seem to be a mixed bag of unknown bins. Oh what to do!

Tas62
Offline
Last seen: 6 months 3 days ago
Joined: 12/26/2010 - 17:57
Posts: 494
Location: Tasmania, AUS

Just a P60 drop in.

FlashPilot
FlashPilot's picture
Offline
Last seen: 7 hours 58 min ago
Joined: 05/10/2010 - 16:07
Posts: 4829
Location: USA

Got a sales link or review link? Thanks.

Ford Prefect
Ford Prefect's picture
Offline
Last seen: 6 days 7 hours ago
Joined: 06/13/2011 - 08:07
Posts: 849
Location: Canada, eh!
Check out lck-led.com, they are on sale: http://www.lck-led.com/p865/Cree-XLamp-XM-L-Cool-White-LEDs-w/16mm-Board...@3A/product_info.html
Tas62
Offline
Last seen: 6 months 3 days ago
Joined: 12/26/2010 - 17:57
Posts: 494
Location: Tasmania, AUS
old4570
Offline
Last seen: 6 days 2 hours ago
Joined: 09/06/2010 - 02:44
Posts: 3425
Location: Land of Oz

The U2 in my low current T2 is warmer tint - forget what tint I got but it wasnt the coolest

 Always remember , the easiest thing in the world to do , is to expel hot air from your lungs and through some vocal chords ..
The resulting sound may , or may not be worth listening too ….

 

DasFriek
Offline
Last seen: 9 years 10 months ago
Joined: 06/26/2011 - 16:26
Posts: 294
Location: Ohio

It doesn't look to be much different than the T6 as much as i thought it would be. Ive seen several pics of the U2 compared to the T6 now and each and every one looks different in its own way. Whether it be tint or beam shape.

Im not sure of the facts of this one spec, But ive seen several times the U2 being rated at 3.5A nominal. But last i remember Cree's PDF on it didnt reflect that number, So it may be a Chinese lumens rating for Amps now. But it would be fun to run a single U2 in a large two cell light to keep it cool and run it at 4.2A's. 

agenthex
agenthex's picture
Offline
Last seen: 8 years 2 months ago
Joined: 07/14/2010 - 04:49
Posts: 3070
Location: Merica

U2 is an efficacy bin, it's a complete orthogonal metric to tint or optics. 

Reading this makes you smarter: http://lesswrong.com/

bushytails
Offline
Last seen: 8 years 8 months ago
Joined: 06/11/2011 - 21:53
Posts: 167

Not really, because the additional phosphors needed for warmer tints lower the lumen output.  You can't get warm U2s, or really bright 6Ds...

They're measuring separate things, yes, but there is still a strong correlation between the two.

--Bushytails

agenthex
agenthex's picture
Offline
Last seen: 8 years 2 months ago
Joined: 07/14/2010 - 04:49
Posts: 3070
Location: Merica

U2's come in similar tints to T6's (the cool "1"'s). It's like asking how R2's compare to Q5's, when most all chinese "Q5"'s are already 6.5kK+ tints.

Reading this makes you smarter: http://lesswrong.com/