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Yeah, I love AVE, and this guy seems fine, too. But from watching this video, I learned that the unit has a voltage regulator which is running "way over spec" and that you need to double the size of the heat sink for it and install a different resistor to remedy that. So be prepared for that. I...

Thanks, man! Very helpful! This is where we reach the limit of my understanding. The way I have learned to deal with diodes is to assume they are "perfect diodes", meaning that they have infinite resistance until their forward voltage is reached and their resistance drops to zero. Such diodes...

I assume you mean HLG-320H-48A? (without the 'c') In that case I have few questions. I have basic electronics knowledge, I just haven't ever worked with COBs, so please excuse their basic nature: Is 48v enough to turn the COBs on at these low currents? The CMX-22 datasheet says 50-55v. Do I...

Actually, there is one other thing that bothers me. Let's say that I would run 8 CXM-22s in series on a HLG-320H-C700, using the Ideal 50-2204-CT Holders. Then I would be running approximately 400v over those Ideal holders that are only rated for 250v! Is that safe, especially in a damp...

Sounds like it might be the best option, then. What would you recommend for pure vegging?

Does anyone know of a place to order Luminus CMX-22 Generation 3 in small quantities in Europe?

Yeah, 60 bucks is definitely cheap even if it was just a reflow station. If you can be sure that the quality is good enough that it won't burn down the house or electrocute you, then you can probably also survive not being able to get new tips or other spare parts in 5 years time. I hope it...

I'd say don't go for these fly-by-night no-name units. Some of them really aren't safe. While all the usual HAKO, Weller, and Ersa units are very nice, the new kid on the block that is cheap, safe, and easy to get replacement parts for, is Xytronic (http://www.xytronic.com). My daily driver is...

This chart is pure gold! Do you have any more data like that? For instance, the VERO 29 and clu058 are sorely missing from the chart. Since we last spoke (months ago, life happened), I have been considering going with a BXRC-30G10K0-D-7X build. That is the VERO 29 3000K, 90 CRi, 37.6v COB...

MDF is a horrible choice in a damp environment, but here is a trick that makes it much more suitable: Mix 50% PVAc glue for outdoor use with 50% water and paint your MDF with that. You will see it very quickly getting sucked into the material, because MDF acts like a sponge with moisture. Keep...

Well, now you've really sparked my interest. If that is true, it opens up a lot more possibilities. I could get 10 COBs instead of 6 and run them at ~25W instead of ~38W, or I could get different ones for flower and veg, and the price would not get too much higher, or might even stay the same...

Wait... Are you saying that current Vero and Citizen COBs are more efficient than CXB3590s when run at low current? My understanding is that they had recently become as efficient as Crees, provided that both are run at 1.4 ~ 2 Amps. I am not married to any brand. I only want what is best for my...

Thanks, man! That was exactly the kind of answer I was hoping for! Gives me a good starting point for doing research.

Yeah, I'm listening to cobby... From reading this forum, he is very active and definitely a VIP in the LED section. Gives sound advice based in solid theory. I'd be a fool not to at least listen to him. That's my understanding, too. It is only the coating that is different and the same blue...

Hello people! What are some good brand/model/stepping 660 nm mono LEDs? Which are the most efficient (photon energy/watt) right now? Thank you in advance!

Thank you so much CobKits, REALSTYLES, and VegasWinner, you really helped me out! Yeah, I understand that. And 3000K has been shown to be better than 3500K with a particular model Citizen COB. I just don't think you necessarily can directly transfer that knowledge to other brands or models...

OK, thanks guys. From the way you are talking, I am guessing that 3500K DB bin is at least a very, very good starting point. And then there is some discussion that it might make sense, in some situations, to go with something slightly less energy efficient. Correct? How about the Ø150 x 70 mm...

Hmm... OK, I was thinking that I would start with the 3500K and then maybe add some ~660 nm mono chips later. I would still have about 30 watts left in the HLG-240H to play with, and if I understand correctly, the efficiency of the red monos is getting better lately? I will be using the same...

Hey people, Before I pull the trigger on this order, I would really like some advice. The is what I plan to get: Meanwell HLG-240H-C1050B 6 CXB3590 36v, 3500K, DB bin with glass lenses and Ø150 x 70 mm pin heat sinks Does that sound OK? Is DB bin 3500K the one to get now, when I am settled...

After extensive research, I finally feel ready to make this post. Here is what I want to do: I want to build a light for my small grow space. To begin with, I will use the same light for everything, and I want to be able to expand later. The light needs to be energy efficient, as electricity is...