Which COB set up to go for?

JDMase · Nov 7, 2016

Hi everyone. So I'm looking at doing a DIY COB build after Christmas and after joining and posting my previous set up idea I've looked on here and not seen anyone with the same build? So I wondered f you guys had recommendations for me to change components?
I also looked on timbers site and not living in the UK I can't get anything there shipped BUT my brother does frequent the U.S. so could potentially bring me something from there back, if you guys think it's a better choice.

My initial set up is:
CREE CXB3590 3000K/30G/BD/90Ra/36V: 33usd/pcs;

Here is 1 solution for you:

6 x led (CREE CXB3590 3000K/30G/BD/90Ra/36V)+ thermal tape+ Ideal 50-2303CR + LED glass lens KB-HB100-80, unit price: 40.8usd/set.

1 x HLG-240H-C1050B: 66usd/pcs; it can run 6 cobs at 36v, each led is 37.8w.

6 x pre-drilled heatsink Φ180*H70mm(for 95-105W): 17.5usd/pcs;

wiring and screws: free.

Shipping cost (about 13kg): 75usd by TNT economy . It takes about 4 days.
Paypal Charge 4.5%.

So the total cost: 512.89usd.

(Copied From alibaba supplier)

Is that set up optimum? I've got a 1x1x2 meter tent and probably won't be going any bigger tent wise. I think 6 cobs would be overkill for that space anyway but 5 May be doable.

This was what I saw on timber
http://timbergrowlights.com/250-watt-cree-cxb3590-5-cob-grow-light-kit/#product-reviews

Any suggestions or otherwise would be appreciated. For instance.. What about citizen cobs?

HydoDan · Nov 7, 2016

Try.. www.cobkits.com. he knows citizen cobs.

welight · Nov 7, 2016

are you wanting 90 CRI?
Cheers
Mark

JDMase · Nov 7, 2016

welight said:
are you wanting 90 CRI?
Cheers
Mark

I'm not too clued up on CRI, but I'm guessing the highest CRI is preferred?

I just want a badass cob light from the off, don't want to have to upgrade in the foreseeable future unless something breaks or a new product that's incredible comes out.

Danielson999 · Nov 7, 2016

I like the design of either 4 cobs@2100ma (a square) or 5 cobs@2100ma (a square with one cob in the center) for a 3'x3' tent just to help with my OCD otherwise it jumps up to 9 cobs @1050ma. I wouldn't be able to sleep with any other variation.

JDMase · Nov 7, 2016

Danielson999 said:
I like the design of either 4 cobs@2100ma (a square) or 5 cobs@2100ma (a square with one cob in the center) for a 3'x3' tent just to help with my OCD otherwise it jumps up to 9 cobs @1050ma. I wouldn't be able to sleep with any other variation.

Wouldn't a hexagon help your OCD? That would be 6

Danielson999 · Nov 7, 2016

JDMase said:
Wouldn't a hexagon help your OCD? That would be 6

Yeah if you just wanted to light up the outside 6 inches of your tent

HardG · Nov 8, 2016

HydoDan said:
Try.. www.cobkits.com. he knows citizen cobs.

Jerry have citizen cobs too

sixstring2112 · Nov 8, 2016

you might be able to save a few bucks using smaller heatsinks.those are overkill for a 36w cob.but would be a good choice if you change to a bigger driver down the road.

sixstring2112 · Nov 8, 2016

also thought i would toss this out there,you can run a 7th cob with that driver if you wanted to have the extra lumens.

JDMase · Nov 8, 2016

Danielson999 said:
Yeah if you just wanted to light up the outside 6 inches of your tent

Wouldn't you be able to make the light patterns over lap? I thought that the problem with most lights especially cobs, was that you would have a hot spot in the middle? Maybe that design would curtail that issue

JDMase · Nov 8, 2016

sixstring2112 said:
you might be able to save a few bucks using smaller heatsinks.those are overkill for a 36w cob.but would be a good choice if you change to a bigger driver down the road.

I was aiming for over kill, I'm sure price isn't too different but as I didn't want to run active cooling I wanted the safety net. Would I be right in assuming that?

sixstring2112 said:
also thought i would toss this out there,you can run a 7th cob with that driver if you wanted to have the extra lumens.

Is that with the mean well driver I quoted in the first post or the one from timber?

I mean I guess if I could run an extra cob or two from those drivers I could potentially set up a small veg/propagation tent next to my current one. Would that be an idea?

HydoDan · Nov 8, 2016

I've got 6 x 3590 @ 1400 Ma in a 2 x 4.5 tent... same square feet different shape.. It's more than enough light..
I'm 3 weeks in veg at 60% power... Bought it from Timber.

JDMase · Nov 11, 2016

HydoDan said:
I've got 6 x 3590 @ 1400 Ma in a 2 x 4.5 tent... same square feet different shape.. It's more than enough light..
I'm 3 weeks in veg at 60% power... Bought it from Timber.

Which driver do you have? Hlg 185 1400 ?
Do you just run them passively?
Also, do you have any supplementary light e.g. UV?

jeepster1993 · Nov 11, 2016

I run 6 3590's at 1.4 amps, 54 watts each(HLG320/1400). They are 80cri bin CD 3500K.
And during the last month of flower I add supplemental lighting, about 80 watts of UV, IR, and blurple leds in a 4 sided stick.
in a 3x3 tent.

HydoDan · Nov 11, 2016

JDMase said:
Which driver do you have? Hlg 185 1400 ?
Do you just run them passively?
Also, do you have any supplementary light e.g. UV?

I have the hlg 320 @ 1400 Ma... run passively...I don't run supplement lighting..

JDMase · Nov 11, 2016

jeepster1993 said:
I run 6 3590's at 1.4 amps, 54 watts each(HLG320/1400). They are 80cri bin CD 3500K.
And during the last month of flower I add supplemental lighting, about 80 watts of UV, IR, and blurple leds in a 4 sided stick.
in a 3x3 tent.

Do you have any links or names for your supplemental lighting? Would be really useful

JDMase · Nov 11, 2016

So in my setup above would I be better to go for cbx3590 3500k as opposed to 3000k?
And again for Hlg 240 1400 rather than a 1050?

jeepster1993 · Nov 11, 2016

JDMase said:
So in my setup above would I be better to go for cbx3590 3500k as opposed to 3000k?
And again for Hlg 240 1400 rather than a 1050?

The temperature of your LEDs is a choice you make. The lower the number, the more "flower" oriented(red), the higher the number, the more "grow/veg"(blue)the light is.
3500 or 4000 seemed to me to be a decent compromise. I did 3500K.

Light is good. I went for the 54 watts each over the 38 watts, in a 3x3 I wanted 35+ watts per square foot=315 watts anyhow...

JDMase · Nov 11, 2016

jeepster1993 said:
The temperature of your LEDs is a choice you make. The lower the number, the more "flower" oriented(red), the higher the number, the more "grow/veg"(blue)the light is.
3500 or 4000 seemed to me to be a decent compromise. I did 3500K.

Light is good. I went for the 54 watts each over the 38 watts, in a 3x3 I wanted 35+ watts per square foot=315 watts anyhow...

I'm using a 1x1 metre so a tad bigger than that, what's your setup?

Which COB set up to go for?

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