1000w Citizen CLU048 1212 Garden

JorgeGonzales

JorgeGonzales

Well-Known Member
coreywebster said:
This one. Are there others I can download?
https://www.rollitup.org/t/diy-cob-led-calculator.890214/
I cant find any citizens that come close to the 64% of the cxb3590s run at 700mA (according to calc figures)
I was hoping the 058 would. The prices I have are based on the best I can get the CXBs vs the Best I can get the CLU058-1825
Both are about £31 each. I may not have as many options as you been in my part of the world, but I have seen the 058-1825 for as high as £54 compared to cxb3590 £44 both digikey prices, not the best prices I have found.
I see everyone talking about the new Citizens beating the Cree but cant figure out where or how they are. Don't get me wrong, I believe you, I am just missing the important facts I guess.
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Testing from @BOBBY_G @robincnn and @Malocan consistently show it. @Malocan has a 90 CRI 2700K 1825 coming out ahead of an 80 CRI 3500K 3590 at 50W and above, which surprised me.

https://www.rollitup.org/t/spectral-lightmeter-gigahertz-optik-msc15.913239/page-5#post-12778775
 
coreywebster

coreywebster

Well-Known Member
BOBBY_G said:
ill have 1825 3500k in next week and will run it side by side with a cxb
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Nice one Bobby. Will look forward to that. My calc shows the 1825c4 @500ma to be 54.57 so assuming its the version 4, the version 5 could be 61.57%.
I like the colour spectrum charts on the citizen, seems to be slightly better at certain peaks and higher over 700nm all together. Through my uneducated eyes anyway.
Also cheers Jorge.
Sorry to distract from your post OP
 
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tomate

tomate

Well-Known Member
BOBBY_G said:
ill have 1825 3500k in next week and will run it side by side with a 3500k cxb3590
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Would be nice to see the 058-1825 3000K running against the CXB3590 CD 3500K because both, the citi 3000K and the cree 3500K seems to be the most efficient (on paper) when it comes to PAR/W.

So testing the citi 3000K and the cree 3500K would be the ultimative efficiency comparsion imo.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
tomate said:
Would be nice to see the 058-1825 3000K running against the CXB3590 CD 3500K because both, the citi 3000K and the cree 3500K seems to be the most efficient (on paper) when it comes to PAR/W.

So testing the citi 3000K and the cree 3500K would be the ultimative efficiency comparsion imo.
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Well, when the 90CRI 2700K Citizen is coming out ahead of the 3500K Cree...although that wasn't top bin anymore was it?
 
Milliardo Peacecraft

Milliardo Peacecraft

Well-Known Member
I honestly just don't understand using chips that huge. There really isn't a good reason to break up your footprint using fewer larger COBs. I'd rather stick to a 3070/048 1212 profile around 37v, the builds are much easier and you'll have less shadowing. I'm not seeing any good reason to expand on my 5 bar per 4*8 layout, seems pretty optimized as is. If I were working with a warehouse or something, I might consider 3590s or something.

That said, check out these Exotic Guice girls I have bangin' out in my 3590 tent, stackin' up fahhat:
plus some bonus Dr. Who colas. I'll let you take a guess as to which Guice has vigor lol. There's also an LRB45 (citrus berry I think) female in there that's rippin' blueberry right now.
 

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JorgeGonzales

JorgeGonzales

Well-Known Member
Well big cobs are good for A) a cheap as hell big watt build or B) an expensive, super efficient build. Spend $40 per cob instead of $12 and you get more light for the same juice. Or less juice for the same light.

Also, those tents look great.
 
Vonkins

Vonkins

Well-Known Member
I'm about to do a similar build. Was going with 2×140mm fans on each heat sink but I guess I'll do 3 prolimatech. Obviously that driver will push 4 clu048 without being overloaded
 
Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
Milliardo Peacecraft said:
That's what got my interest piqued in the CLU048. The metallic substrate seems to wick heat away from the chip somewhat more efficiently than the CXB's ceramic substrate, allowing for higher binning even when over-driven slightly.
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Welcome aboard Brother:peace:

Your theory is spot on, pretty much said the same here in this thread:
https://www.rollitup.org/t/calling-all-cobs-calling-all-cobs-come-in-number-crunchers-are-you-receiving.916079/page-2

And it was confirmed to me by one of Citizens engineer...Also as a result of the above, the higher you drive the CXB the more unstable it's spectral output becomes when compared to the Citi COBs on a (near as) like for like basis...

Personally I have seen flaws/discrepancies in the Cree data as have others here, makes me wonder whether something else is up, seeing as Citizen own the patents for the ali substrate design and that in part is what has given them their competitive edge, especially on paper if you catch my drift....

Don't get me wrong the CXB looks like a good COB but I can think of better ways to spend the money.
 
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Milliardo Peacecraft

Milliardo Peacecraft

Well-Known Member
Johnnycannaseed1 said:
Welcome aboard Brother:peace:

Your theory is spot on, pretty much said the same here in this thread:
https://www.rollitup.org/t/calling-all-cobs-calling-all-cobs-come-in-number-crunchers-are-you-receiving.916079/page-2

And it was confirmed to me by one of Citizens engineer...Also as a result of the above, the higher you drive the CXB the more unstable it's spectral output becomes when compared to the Citi COBs on a (near as) like for like basis...

Personally I have seen flaws/discrepancies in the Cree data as have others here, makes me wonder whether something else is up, seeing as Citizen own the patents for the ali substrate design and that in part is what has given them their competitive edge, especially on paper if you catch my drift....

Don't get me wrong the CXB looks like a good COB but I can think of better ways to spend the money.
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Wow man, I didn't know they had a patent on aluminum substrates, I thought vero were on an aluminum base as well? I've never actually seen one in person though. I figured citizen probably has some competitive advantage, being the first ones to manufacture a COB and all.
 
JorgeGonzales

JorgeGonzales

Well-Known Member
Milliardo Peacecraft said:
Wow man, I didn't know they had a patent on aluminum substrates, I thought vero were on an aluminum base as well? I've never actually seen one in person though. I figured citizen probably has some competitive advantage, being the first ones to manufacture a COB and all.
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Supposedly the die layout is patented, forget where I read that, for optimum something or another. Boy I am useless.
 
Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
@ Millardo not sure about Vero (maybe someone else can chime in on that) but if they did it would have to be under some type of licencing agreement with Citizen.

@Jorge I did not know about die layout patent but I would not be surprised. The big companies realize the huge profits that are at stake with regards to LEDs, so they are on it when it comes to protecting their ideas.
 
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