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Thank you guys,

I have at my disposal only the 320H-42B and the 240H-42B. Buttloads of them actually. What sort of ppfd I'd get using 10 cobs in a 4x4 using 2x 320H-42B. That would cover my losses right?

What if I use 4 Cobs per bar and use two 240H-42B to push them in parallel? Not that efficient? What sort of PPFD for a 4x4? Another question, adding a fourth cob to the 320H would cover this 10% loss I had?

Now, I have noticed on the label of the HGL320-42B 7.65A .... 2.8A x3 cobs is 8.4A Did I buy the wrong drivers for the job then? Any LED Gurus here to help me on that? @Growmau5 @SupraSPL @Greengenes707

*Edit* I will measure and get back to you, now I know how to do it... I have at least 4x 320H performing the same. So I don't think the drivers are causing this. I have 10 more drivers or so of the same model... 320s

Hi guys, this is my second DIY project. As you will soon realize, I'm no engineer or electrician, far from it. But I read you guys and try to do my best with what I got. In my first project, I used to run 6x CXB3590 36v @ 2.8 amps each. One driver per cob. I know, it is not that efficient, but I...

Thanks for the input. I'll do some tests.

Definitely going towards cost. I tend to build for my friends this setup. So cost is the most important. Using as less COBS as I can to achieve that. It is not my job, but all my friends want what i have build to test. And I don't want to build them something you think could be perfected. That...

Just for the record, I tested two bars of 3x 3590s per HLG 320 on a 4x4 space. Got descent numbers on my apogee... Not a great spread though.

Hey guys, I have a bunch of 320H 42B and a bunch of 3590s 36V. I was wondering what configuration would be better for a 4x4. I have CNC machinery so I can make pretty much any config when it comes to space between LEDS on a single piece of aluminium using passive or active heat sinks. I can...

thanks, I think we will get to that stage at some point. Hopefully, by then I would know how to use it properly.

Okay, so, I am a total newbie @ seed making, but i need to make my seeds. Why and why autos? The place I live and I don't have access to more seeds then I already have. So the thing is... I have a pack of AUTO regs. I read that it should be pretty straight forward to cross them, being the same...

A SINGLE HLG-240H-42 Will drive two 36V CXB 3590s in parallel? Is that correct?

The intention is to run them 36V @ 2.8 One bar 200W 2 cobs (missing single driver to push this), and a 300W bar (HLG-320H-36) 3 cobs.

Reading here and there I found that for my 3 CXB 3590 @ 2.8ish 3500K bars, the best choice for a single driver would be HLG-320H-42, (does the 36 also works?). I need to buy them now and need to decide if the 36 will do or 42s are the way to go. According to the sheets, 42s... But my doubt...

Is there any driver that will run just TWO 36V 3590's @ 2.8? Thanks mate!

So Greengenes707, now I am lost. Bobby said 42V, For this 3 COB bar 36V @ 2.8 what driver should i get? 36 or 42V? Keeping in mind I am looking for a single driver per bar. The 3 COB 300W-ish and the 2 COB 200W-ish. JEEZ, Sorry, Thanks mate

Is there any driver that will run just TWO 36V 3590's @ 2.8?

NOOB ALERT What is the difference between the 320-42 and the 320-2800 then? They way you wire them? Another question: What would be the perfect driver to run two @ 2.8?

Sorry for the ignorance but you mean I can run 3 CXB3590 @ 2.8 with one of these? https://www.trcelectronics.com/ecomm/pdf/hlg320h.pdf