I did find out that the blues are more tightly focused than any of the reds. Theyre 80 degrees with a total angle of 90 degrees whereas all the reds are 90 with a total angle of 120.

And unless youre talking about the die itself these are all 5w emitters. At 4" (with only 50w) the leaves seem to be curling under.
mx4intx Reviewed by mx4intx on . Calling out to Weezard for LED advice My friend, I've read your stuff here and at Steve F.'s site. I want to build a dedicated flowering lamp using Ledengin 15 watters. (4 reds, 1 blue, and possibly 1 warm white; LM 317's so I can tweak the ratios.) Essentially, a copy of your 4+1 cake pan lamp but built on a 4 x 18" finned heatsink so I can see what's going on under it.) If I were to post my picks for power supply, resistor ratings / values, etc., would you critique and perhaps offer some guidance? I have already purchased Rating: 5