CXB3590 1500W

ttystikk said:
That's a good color temperature for veg, and there's some debate about how they'd do as bloom lighting. They are very efficient.
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I was under the impression that 4k was the go-to for veg and that 3k was best for bloom, that is if you were to focus around a certain range...?

I would think blooming under 5k would control the first 2 week stretch well though.
 
EfficientWatt said:
CXB3590 72V @ 700ma (from PCT) : run just under 70V => 70*5 = 350V

Constant current region for HLG-240-c700 : 178 ~ 357V

So yes, at ~98% load and ~94% driver efficiency, that's what you call pretty optimal ;)

(Table : https://www.rollitup.org/t/matching-drivers-and-cobs.883866/page-6#post-12039570)
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Ok then I have one more question.
If they pull 50 watt at 700mA,, and the driver is rated at 200W will it just give them 40 watts each with 5 in series?


Ive done some more reading on other threads and I think I understand driver and Led pairing now.
Oh and I also noticed that that is a 250 watt driver, and not 200 watts.
 
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I was in a similar place. I built a 6 COB light with (2) 4000's and (4) 3000's -- and then I built another light that can fit inside the first one with a (2) 5000's. If I want to use the 5000's separately in a veg space I can, otherwise I run the 4's and 5's during veg, and the 4's and 3's during flower off of one fixture. If you plan your drivers and your wiring, you can make it modular.

Hard to get a good pic since its hanging over plants right now... This shows 6 of the 8, there are two more in the foreground that were cut off. The two far ones (and near ones you can't see) are 3000's, the 4000's are parallel to those, and the bright 5000's are in the center running length-wise, and can be disconnected and removed to run independently. Sorry, bad pic and bad explanation, hope it makes sense.

Edit: I fired up all 8 in attempting to take the pic, it does not show how I actually run the light with either four or six at a time.

3-4-5angle.jpg

Not sure if attaching more low quality pictures helps... but just in case, here's the light with the four veg lights on, without the 5000's, with the 5000's running separately in a veg space (not in that order...)

My design was... uh... "ambitious" for a first attempt. My light can be adjusted for spacing. Not sure I'd recommend this... lol... and my craftsmanship leaves a lot to be desired. But hey, (so far) it works!

double_light.jpg 4of8.jpg just5000k.jpg 3s+4s.jpg
 
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Humanrob said:
I was in a similar place. I built a 6 COB light with (2) 4000's and (4) 3000's -- and then I built another light that can fit inside the first one with a (2) 5000's. If I want to use the 5000's separately in a veg space I can, otherwise I run the 4's and 5's during veg, and the 4's and 3's during flower off of one fixture. If you plan your drivers and your wiring, you can make it modular.

Hard to get a good pic since its hanging over plants right now... This shows 6 of the 8, there are two more in the foreground that were cut off. The two far ones (and near ones you can't see) are 3000's, the 4000's are parallel to those, and the bright 5000's are in the center running length-wise, and can be disconnected and removed to run independently. Sorry, bad pic and bad explanation, hope it makes sense.

Edit: I fired up all 8 in attempting to take the pic, it does not show how I actually run the light with either four or six at a time.

View attachment 3536226
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that is what I want, but whit pasive cooling
 
What about staying with the 4000K and add some Vero Decor 18s in the 3000k 97 cri. If you look at the spectrum, it peaks at 660nm giving red up to about 800nm.
 
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