Need information on this COB Light

OldSchoolGrower

OldSchoolGrower

Well-Known Member
Need information on this COB Light ASAP. I need to order a new light tonight and could really use everyone's input on this model to put my girls under. I know it says 1800w - 300w from the wall? I know it's sufficient to veg under, but I need to flower as well. I'm on a limited budget for a few months yet. If it will work well would like to order a 2nd one to go along beside it. Been researching LEDS for the past month or so. Not new to growing just new to LEDS. So could really use the cannabis family advice on this. As I stated need to order a light tonight. Not limited to a tent as I have a full room to grow in. In the process of separating the room for veg and flower. amazon Sunshine 6x COB 1800w 300w at the wall -Full Spectrum white not blurple. Sorry would not let me post a link yet.
 
OldSchoolGrower

OldSchoolGrower

Well-Known Member
CobKits said:
dont need a link

any company that overrates their lights like that are total shit

questions like that come up every other day here, dont take it personally we all started there with sketchy LEDs and their false promises
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Yeah I just need something good enough to get me by the next couple months. On a limited budget do to my disability and repairs right now. Goal is to buy parts and build my own in a few months. Not very much different from when I was rebuilding PC's.
 
OldSchoolGrower

OldSchoolGrower

Well-Known Member
CobKits said:
go buy literally any white LED bulbs from home depot it will be at least as good at 1/5 of the price
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LOL. You guys are inside my head. I was planning on throwing together some supplemental lighting with LEDs and CFLs. The one. In my avatar along with 2 sisters and some cuttings I took a few days ago are vegging under a 33w 150w LED Shop Light and 4 CFLs. 33 days old...
 
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OldSchoolGrower

OldSchoolGrower

Well-Known Member
nfhiggs said:
THIS. Get a handful of those and a couple of 5 way bulb splitters.
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LOL. You guys are inside my head. I was planning on throwing together some supplemental lighting with LEDs and CFLs. The one. In my avatar along with 2 sisters and some cuttings I took a few days ago are vegging under a 33w 150w LED Shop Light and 4 CFLs. 33 days old...
 
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Randomblame

Randomblame

Well-Known Member
How small is your budget?
EBgen.2 strips are pretty cheap. You'll need 10 or 12 4ft EBgen.2 strips and a Meanwell HLG-240H-42A LED driver to sufficiently illuminate an 2x 4' area. No heatsinks required, only a frame to stick the strips on.
~250$ for 260 true watts. No bullshit claims, but fully DIY! True 2,2μmol/J or ~570μmol/s ppf to work with!
Inside an 2x 4' tent it would be around 760μmol/s/m² ppfd, more than enough for a decent yield.
For an oldshoolgrower like you 1,5g/w should be doable with such a light.
 
Randomblame

Randomblame

Well-Known Member
With the same budget, you can also build a COB based light that will have similarly good effiency. It's just a bit more work to build everything together and it gets havier because you need additional heatsinks.
 
D

Dave455

Well-Known Member
Randomblame said:
With the same budget, you can also build a COB based light that will have similarly good effiency. It's just a bit more work to build everything together and it gets havier because you need additional heatsinks.
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What is your strip recommendation for new flowering set up in a 3x2....No budget constraint. Thanks
 
Randomblame

Randomblame

Well-Known Member
You can also use 16 2ft. Q-series strips and a HLG-185H-24A for around 200w. Each strip would run at 500-525mA(12-12,5w), with 3500°k that's still 195lm/w.(198lm/w @450mA)
The H-inFlux has more diodes(88 instead of 40 per strip) but it's probably not the same flux bin. If you use the calculator tool you get only matching numbers if you use AZ/SK for Q-series and AZ/SJ for H-influx. But Samsung has messed up the numbers for LM301b so take that as preliminary assessment.
@diyled has asked Samsung about the used binnings but we need to wait for an answer.
Apart from diode count there is not much of a difference at the end(both are +190lm/w), but if both strips would use the exact same binnings one H-influx L06 would be comparable with two Q-strips and would still have 8 diodes more.
Samsung itself rates L09 H-influx overdriven at 1.380mA (~180mA per diode) with only 1.76μmol/Jj, which also indicates there could be a weaker binning compared with Q-series.
I know that's a lot of "ifs" and "buts" but until we have certainty we have to wait a bit.
 
diyled

diyled

Well-Known Member
@Randomblame I think we will be waiting a long time. I'm undecided now whether to stick with the f series or switch to the hinflux. Both are going into the sphere. Fseries at 1.250a and hinflux at 1a but I'm not hopefull for the hinflux now.
 
OldSchoolGrower

OldSchoolGrower

Well-Known Member
I want to thank every one for their support and input on this. Unfortunately I had to order the light Thursday night at Midnight when my disability check hit my account, so it will be here Tuesday. Like I said, I was on a small budget until vehicle repairs and other things are done around here. I will be adding supplemental lighting with it. Then hopefully I can start putting some money aside for a proper build that will cover the available space I have to grow in. Basically dividing up a spare bedroom. Separate veg and flowering sections and another smaller section for clones. So I can have a perpetual grow going on. This will be my 1st full indoor grow since the early 90's. Had other grows since then that I started indoors then moved them outdoors. Unable to do that any more since almost severing my spinal cord in my neck and a burst fracture in lower back. As well as having to have both knees replaced. I know; I'm a train wreck... I will be starting a grow journal and I hope you all follow my journey. Once again, thank you all for the advice and input...
 
Randomblame

Randomblame

Well-Known Member
Yea, when you run an L06 strip at 1Amp that's ~91mA per diode. Q-series also run with 90mA and we know from datasheet that's 198lm/w in 3500°k. With the same bins H-influx should be in the same range.
But H-influx datasheet says 181lm/w at 1.430mA(130mA per diode) I can not believe a plus of 17lm/w. More likely would be ~188-190lm/w at best.

Thats the calculator output for Q-series (40 diodes in 3500°k, 8s5p at 90mA)

Screenshot_20180630-113058.png

That's the output for L06 H-influx(88 diodes, 8s11p at 130mA), but they use the same numbers for 3000 and 3500°k so the numbers are a bit too low. But if you use SK bin they would be much higher.

Screenshot_20180630-120949.png

And this is the output for L06 H-influx at the same 90mA as Q-series(990mA per strip) using the same AZ/Sk bins.
Screenshot_20180630-113901.png


And at last the same using AZ/SJ bins...

Screenshot_20180630-120125.png


I have tried all sorts of bin combinations, with AZ / SJ bin you come closest to the values from the data sheets. With AZ/SK bin H-influx would have much better numbers.
 
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diyled

diyled

Well-Known Member
@Randomblame I'd use L09 a 1 amp. But you also have to consider the difference in junction/case temps. Thick fr4 (?) Vs thin aluminium.

Temp experiments are needed.

E2a we keep hijacking threads shall we start a new thread to speculate,compare and share data?
 
Randomblame

Randomblame

Well-Known Member
Yea, thanks mate! Strips are currently the best you can do. Efficient like heck, no heatsinks required and good uniformity already a few inches below the fixture. For my needs they fit almost perfect and I would only change them against better strips.
 
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