I am actually working with a similar manufacturer on a multi-band 100w multi-emitter package. It's difficult, though. Getting my desired ratio and in a specific pattern is somewhat of a nuisance because of varying voltages across each serial string. I may have to stick with a different pattern with a more uniform configuration than spread out.

I've seen a plain 100w one, and they're pretty intense, especially on the quantum meter.
khyberkitsune Reviewed by khyberkitsune 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