SpectrumKing hates COBs

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az2000

Well-Known Member
Abiqua said:
I brought this up because, these were the type of passive aggressive responses and was meant to illustrate the point, where none lies. Ends to a mean indeed.
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I don't know how to parse that sentence. You asked to why I mentioned pet. I explained. You said the community told him to f off. I didn't see that. I saw a subset of the community. I believe there were others who followed him.

Which leads to how a subset believes they should protect such persons, using any means, such as escalating the heat and then encouraging everyone to report the thread for excessive heat. :)

Which leads to why I mentioned pet. I didn't initially believe his story of being threatened with "grassing out." But, now that I'm seeing more of the "means to an end..." I don't know. It certainly adds to the credibility of his story.

Again, not sure how to read your last two posts. If you're telling me to F off (or accusing me of passive aggression), I apologize. I'm just relating what I've seen as something of a trend. And, seems to be confirmed by you and Supra's responses.

I don't have anything more to say. That's all I initially said. I just wanted to tie it together, being unclear about what you were saying.
 
hyroot

hyroot

Well-Known Member
deadgro said:
That was an exhausting read..

Have any of you guys used the Amare lights?
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I'm using them now. In veg though. Flowering will begin in a couple weeks. I did flower with a 100w version they never releases. That's it. In veg i have their Cree 150, epistar 150, Cree 260, and their Cree cob panel. They all kick ass for veg. We'll see how they all do in flower soon.
 
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deadgro

Well-Known Member
hyroot said:
I'm using them now. In veg though. Flowering will begin in a couple weeks. I did flower with a 100w version they never releases. That's it. In veg i have their Cree 150, epistar 150, Cree 260, and their Cree cob panel. They all kick ass for veg. We'll see how they all do in flower soon.
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Do you see an advantage of the cob panel over the strictly single diode panel?
 
hyroot

hyroot

Well-Known Member
deadgro said:
Do you see an advantage of the cob panel over the strictly single diode panel?
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it has 2025 cobs and I think xpe 5w string leds. I can run just the cobs or the 5w or both. I've only been using the cob panel for a little over a week. I can't really say. In veg it probably doesn't matter one way or the other. Plants use a 1/3 of the light in veg that they use in flower. We'll see. The cxa 2025's are older. They went with those its wasier to cool those. They recently told me they figured out how to cool the larger cobs. Having multiple cobs in one case along with string leds.. So I think eventually they will release another version.
 
REALSTYLES

REALSTYLES

Well-Known Member
I wish someone would threaten me like they did Pet sent me a pm explaining what happened about the "Noobs stop buying China junk" That thread got locked because guys got butt hurt from me and they complained to the mods. I didn't call any names and got ganged up on lol. And I'm the one with mental issues please haters gonna hate.
 
SupraSPL

SupraSPL

Well-Known Member
az2000 said:
Which leads to why I mentioned pet. I didn't initially believe his story of being threatened with "grassing out." But, now that I'm seeing more of the "means to an end..." I don't know. It certainly adds to the credibility of his story.

Again, not sure how to read your last two posts. If you're telling me to F off (or accusing me of passive aggression), I apologize. I'm just relating what I've seen as something of a trend. And, seems to be confirmed by you and Supra's responses.
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Just to clarify, I wasnt commenting on anything related to Pet. My "no leg to stand on" comment is strictly referring to Spectrumkings XBD claims and the numbers in the data sheet. I think it is great when new or controversial ideas get discussed, even if they dont hold up in the end, that is how many of us learn new things.
 
captainmorgan

captainmorgan

Well-Known Member
I love how RS is a victim here and I'm the troll,why don't some of you look at his posts starting when he joined here in Dec. He's trolled thread after thread throwing out his subtle insults to anyone that called bullshit on his nonsense. It doesn't matter to him if he is presented with actual facts. The only thing he offers to this forum is chaos and I'm not sure if it isn't deliberate but I am sure he's not here to contribute to the community. It's true,if you decide to wrestle with a pig your going to get dirty. And on the subject of Pet,why would you just assume he's the one that's telling the truth. Why would a business owner risk his companies reputation on someone that just annoyed him because they had a argument on a forum.
 
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getsoutalive

Well-Known Member
As a big fan of passive cooling, the Spectrum King design is at least interesting to me. And remember that it is not really aimed at our demo. If I were running a massive greenhouse or warehouse grow, I would have to give the design a serious look. No moving parts and waterproof. Covering a large space with DIY COBs is less practical than with high bay type lighting.

He was careful to only say that COB tech is not the most efficient available, and that is technically correct. For DIY use, COBs make much more sense than stringing equivalent numbers of single diode chips. Build time alone is more than enough to make the slightly less efficient COBs the better choice. But in a commercial operation, the single diode chips are soldered on an automated assembly line and therefore much easier to deal with.

As has been explained though, those fixtures were not using Cree's high end diodes, so his attitude of superiority was totally unwarranted. And the claim that the datasheets supplied by Cree were good for the single diodes, but not the COBs was simply not credible. I would not take anything he said seriously.

On the subject of RS and trolling. I have not gotten into the discussion previously, but it seems obvious to me that RS is the antagonist there. Even after having the term "Chinese panel" explained to him time and again, he would not let the fact that Cree has manufacturing facilities in China go. He has since built himself some beautiful fixtures with 3590s and said that he would never buy blurple lights again, but still refuses to admit that he was wrong. That, to me is the definition of trolling.
 
alesh

alesh

Well-Known Member
getsoutalive said:
[...]
He was careful to only say that COB tech is not the most efficient available, and that is technically correct. For DIY use, COBs make much more sense than stringing equivalent numbers of single diode chips. Build time alone is more than enough to make the slightly less efficient COBs the better choice. But in a commercial operation, the single diode chips are soldered on an automated assembly line and therefore much easier to deal with.
[...]
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Can you point me to a more efficient tech?
 
Greengenes707

Greengenes707

Well-Known Member
Lets clear something up...
COB led performance is ahead of single die led performance. No one has shown any single dies out performing cxa's. Just talked about the theory behind it all.

The wafers to make the single dies may be better at that level. But when put into the final package...they lose their advantage, and underperform COBs . Cobs dies run so soft each that their efficiency can be so high. If you were to take an xte wafer and put them into a cob package...then they would be even better. But that is the theory for dies/wafers...not the end package.
When the final package is put together and in use...cxa's and other top cobs are ahead. All this means is there is still room for improvement in cob tech...while single die is getting closer to maxing out.

And that is what he kept trying to spin into cobs aren't as good. Well that is just not true, and once again... I and others showed that clearly.
 
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getsoutalive

Well-Known Member
alesh

alesh

Well-Known Member
getsoutalive said:
http://cree.com/LED-Components-and-Modules/Products/XLamp/Discrete-Directional/XLamp-XPL

I believe that this is the highest efficiency product they sell at this time. I do not believe there is a COB that can output over 200 lm/w.

I am only going by spec sheets and have not been actually testing these personally. If that is incorrect, my apologies.
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Both CXA3070 and 3590 can deliver more than 200lm/W.
Top bin 3070 will be a few lm/W above top bin XP-L at the same (especially at low) current, while being cheaper per W.
 
captainmorgan

captainmorgan

Well-Known Member
getsoutalive said:
http://cree.com/LED-Components-and-Modules/Products/XLamp/Discrete-Directional/XLamp-XPL

I believe that this is the highest efficiency product they sell at this time. I do not believe there is a COB that can output over 200 lm/w.

I am only going by spec sheets and have not been actually testing these personally. If that is incorrect, my apologies.
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Driven softly the CXA 3070 3000k AB can put out about 180 lm/w if I remember right and it's been on the market for sometime,the XP-L is new and just coming into supply. I think the next gen of COBs will surpass the XP-L fairly soon.
 
Positivity

Positivity

Well-Known Member
getsoutalive said:
http://cree.com/LED-Components-and-Modules/Products/XLamp/Discrete-Directional/XLamp-XPL

I believe that this is the highest efficiency product they sell at this time. I do not believe there is a COB that can output over 200 lm/w.

I am only going by spec sheets and have not been actually testing these personally. If that is incorrect, my apologies.
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You have to take realistic operating currents into account also. The big xpl numbers come at 350ma. A cob run similarly will be around the same efficiency... Top bin vs top bin. Cept' you only need one cob...

Haven't crunched the numbers but from what I recall..
 
Greengenes707

Greengenes707

Well-Known Member
getsoutalive said:
http://cree.com/LED-Components-and-Modules/Products/XLamp/Discrete-Directional/XLamp-XPL

I believe that this is the highest efficiency product they sell at this time. I do not believe there is a COB that can output over 200 lm/w.

I am only going by spec sheets and have not been actually testing these personally. If that is incorrect, my apologies.
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The XPL's at 1.05a...35% of their max...hits ~129lm/w or 39% efficient
The CXA's at 1.4a...50% of their max...hits the same ~129lm/w...~39% efficient
Bring the cxa down to 35% of it's max...or ~.8a...gives you 147lm/w...~45% efficient


All at 50c Tj/Tc based on crees product characterization tool for 3K spectrum top bins(U6 for xpl and AB for cxa). Which is a little less performing than the data sheet. But consistent and probably most accurate.
 
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