Cbx Series cobs. Cumulative info and comp.

Greengenes707

Well-Known Member
Has anyone noticed that the higher CRI cxb's are available 2 bins higher than the cxa was, as where the 80 cri cxb's are only one bin higher.
There will still be a lacking of output comparatively to it's 80CRI counterpart...but not as drastic as before.
Also the high CRI seem to have passed hps efficiency...which to me has always been the... should I use it, or shouldn't I use it line. But now that they are producing enough light(~42%+/-) to compete with hps...they might be worth incorporating, or even going all they way through...@hyroot.

The one thing that could throw a little wrench in the progress is that they changed the high cri from 90min/95typ(LER=275) to 90min/92typ(LER=?)...so slightly lower cri typical...with could affect the LER, and counter the extra bin in efficiency. But I still think the extra bin should still come out ahead of the cxa even if the LER is slightly higher.
Another thing is that with the higher CRI, I can see higher K temps giving the better/more ideal ratio's of nm's... while also allowing an other additional bin gain to be used. We just need some more SPD charts to really see what the higher cri(even 80cri 4K is unknown to us still...let alone 90cri 4K). 4k 90cri comes in AB..which we know AB kills it as far as enough total light...but this high cri version is doing it efficiently too, like the cxa 3K AB 80cri did.

Or the ultimately could happen...cree could have a 3000k BB on the back burner waiting to add to the sheet like they did with the ABcxa...to make 3 bins per color temp like before...all speculation/optimism/hope on that part though.

But the improvement in the higher CRI category was something worth noting.
 
Last edited:

Lighterfighter

Well-Known Member
not just that they loose a lil orange it seemed, but gained some IR, I dont remember visiual spectum numbers exactly, but that thought crossed my mind too. The old cxa high cri has a huge gab in the middle spectrum, but gained more red and IR, This would be ideal for flower. The new cxb made up some middle gap and still gains on red spectrum. Maybe it was wishful seeing though. really so much is still unknown about the full line of cxb.comew here in a few weeks the whole game will be a lil easier, should have more info then just crees. I am ganna do better diagram for specs.
 

alesh

Well-Known Member
Has anyone noticed that the higher CRI cxb's are available 2 bins higher than the cxa was, as where the 80 cri cxb's are only one bin higher.
There will still be a lacking of output comparatively to it's 80CRI counterpart...but not as drastic as before.
Also the high CRI seem to have passed hps efficiency...which to me has always been the... should I use it, or shouldn't I use it line. But now that they are producing enough light(~42%+/-) to compete with hps...they might be worth incorporating, or even going all they way through...@hyroot.

The one thing that could throw a little wrench in the progress is that they changed the high cri from 90min/95typ(LER=275) to 90min/92typ(LER=?)...so slightly lower cri typical...with could affect the LER, and counter the extra bin in efficiency. But I still think the extra bin should still come out ahead of the cxa even if the LER is slightly higher.
Another thing is that with the higher CRI, I can see higher K temps giving the better/more ideal ratio's of nm's... while also allowing an other additional bin gain to be used. We just need some more SPD charts to really see what the higher cri(even 80cri 4K is unknown to us still...let alone 90cri 4K). 4k 90cri comes in AB..which we know AB kills it as far as enough total light...but this high cri version is doing it efficiently too, like the cxa 3K AB 80cri did.

Or the ultimately could happen...cree could have a 3000k BB on the back burner waiting to add to the sheet like they did with the ABcxa...to make 3 bins per color temp like before...all speculation/optimism/hope on that part though.

But the improvement in the higher CRI category was something worth noting.
Good catch.
CXB3070@1900mA@Tc 55°C (x1.02) - minimal values, absolute output
cxa3070.jpg
cxa3070chart.jpg
90CRI 3000K is now almost as efficient as 80CRI version. Seems like there's a new choice #1.
 

sforza

Well-Known Member
So for 6 CXB3590s, you could use a pair of HLG-120H-C700 and put 3 on each driver @ 700mA. The string would be almost fully loaded which is good for driver efficiency.

If you went with HLG-185H-C1050, only 2 could fit on each driver and the string would be far from fully loaded, so you would need 3 drivers. A third option, the HLG-120H-C1050 could also fit 2 CXB3590s. The string would be closer to fully loaded so it is a good match and you would need 3 drivers in that case also.

So here is how they would compare:

CXB3590 CB X6 $360
Rosewill RCX-Z200 X 6 $84
HLG-120H-C700 X 2 $130
total cost $574
293W @ 51.7% = 151.5 PAR W + 141.5W heat
$3.79/PAR W

CXB3590 CB X6 $360
Rosewill RCX-Z200 X 6 $84
HLG-120H-C1050 X 3 $195
total cost $639
453W @ 45.6% = 207 PAR W + 246.4W heat
$3.09/PAR W

A nice $ savings/W up front and either option will work awesomely. At 700mA they are creating 13.4% more light/W and 12% less heat/W.
Good information. Thank you SupraSPL.
 

FESTER665

Well-Known Member
Well I taled to the rep at Digikey today and there were 48 people waiting for CXB3590's so I'd be lucky to even get them all in the April shipment. I talked to our rep at Mouser and they dropped the price closer to Digikey's if I ordered four of them...

So I bit the bullet and ordered four and a driver. My plan is still to have three on the heatsink I already have, and then I may use the fourth one as a "spot" light down the road a little, just get a smaller heatsink and fan. I don't know if a CPU combo would be enough cooling for one? What driver would you guys recommend for a single CXB3590?
 

Lighterfighter

Well-Known Member
@FESTER665 did you see my setup list. I would say get those fan and cpu heat sink. It depends on how much you want to drive the lights. The idea its VxA=W
So I Am running about 72v@1.05a=76w piece. there are cheap drivers that may run the one light, but how hard are you wanting to run it? harder or same level as the others? you prolly want about 72v and then times ampage you want to run. I wouldnt run em past what I am but you can. I am running 80w. but You could push it up to 1400 and youd be missing out on alot of efficiency.
 
Last edited:

FESTER665

Well-Known Member
Haven't given it too much thought just yet, I'm waiting to see how well the (3) light my space, but I'm guessing I would like a ballast that would allow me to run the one but give me some room to add a second if wanted or needed....

Hoping my delivery is still on 3/20, the rep should be getting back to me in the morning
 

Lighterfighter

Well-Known Member
well if I were in your shoes id obvi go with the 2 120h meanwell drivers as they are cheap as shit then run the 2x2. 4 lights on 2 balllasts. Thanks for keeping the thread up to day, can you holla when u get more deets from them? for all I know mine will fall through :D.
 

Lighterfighter

Well-Known Member
alesh Man I was saying that earlier. the 90 cri have heavy on reds. which I considered adding. The sun spectrum behind that would be a good means of checking the points of excess on each one. If I get time ill try to do that. Really bad w image editing if u havent seen my rudimentary drawings bahahahahah. Yea I cant type for shit lol. sorry bout title. and for any future typos lol. I got the holders fans ect in. I plan to make a garden this weekend out side( Happy spring) then ill get on those cxb3590 if they show next th or friday! you guys are the shit.
 

draz

Well-Known Member
I see the 90CRI CXB2530 are available. Has anyone run the numbers for these guys(I assume very similar to alesh #s)? Has anyone noticed the huge volume discounts on the CXBs, very different than the Vero's. We need someone to organize a massive group buy for these(drivers,reflector included)! Wish I could but being in Canada would screw up the shipping.
 

Lighterfighter

Well-Known Member
@draz yea, they should do a bulk buy, then make them and sell them to people who want em lol. at a small marrkup. could prolly pump out 1 or 2 before lunch. 50$ in profit per unit would make 100 a day and be totally a cool idea. to bad capital is generally better spent.
 

Greengenes707

Well-Known Member
I see the 90CRI CXB2530 are available. Has anyone run the numbers for these guys(I assume very similar to alesh #s)? Has anyone noticed the huge volume discounts on the CXBs, very different than the Vero's. We need someone to organize a massive group buy for these(drivers,reflector included)! Wish I could but being in Canada would screw up the shipping.
@draz yea, they should do a bulk buy, then make them and sell them to people who want em lol. at a small marrkup. could prolly pump out 1 or 2 before lunch. 50$ in profit per unit would make 100 a day and be totally a cool idea. to bad capital is generally better spent.
That is known as this crazy old fashion concept called a company
And Uncle Sam will want his cut.
 

Lighterfighter

Well-Known Member
lol fosho. that is what I Was getting at lol. the capital necessary to make it cheap is alot though. not a bad idea if you can get consistency, but that is the hard part for most. you and supra get cost analysis, it is not totally crazy to make a light thats profitable. and not to much time either. its the warranty thatll cost ya lol.
 

Lighterfighter

Well-Known Member
@Greengenes707 I studied supply chain in college, this process wouldnt be hard to get down. the failure rates of the few components could cost and eat all your profits up. I think you could build a light an hour. self distributing aint easy either lol.
 

draz

Well-Known Member
That is known as this crazy old fashion concept called a company
And Uncle Sam will want his cut.
LOL :cool: I know.

I was just saying Veros only drop like 2% in bulk quantities.
Whereas CXB are like 50%.

My hope is the lower quantity prices will go down.
 

Greengenes707

Well-Known Member
LOL :cool: I know.

I was just saying Veros only drop like 2% in bulk quantities.
Whereas CXB are like 50%.

My hope is the lower quantity prices will go down.
Veros I imagine have a low margin. As where cree gets marked up because of the brand name.
Cree is making the same whether it's from china selling them at 30$ or mouser at 65$...that is just mark up from the middlemen(distributors). Crees wholesale is perfectly affordable...but getting to go direct through cree require order quantities that would drain my whole 401K and then some.
lol fosho. that is what I Was getting at lol. the capital necessary to make it cheap is alot though. not a bad idea if you can get consistency, but that is the hard part for most. you and supra get cost analysis, it is not totally crazy to make a light thats profitable. and not to much time either. its the warranty thatll cost ya lol.
@Greengenes707 I studied supply chain in college, this process wouldnt be hard to get down. the failure rates of the few components could cost and eat all your profits up. I think you could build a light an hour. self distributing aint easy either lol.
Me too. Business management and marketing majors...with a minor in general biology. Now you see why I am how I am.
Knowing what you want is one thing...and very easy...basics of Bus316(professor was chinese...go figure)
Knowing where and how to get it correctly and consistently are two totally different things. And since many of the things you must deal with are overseas to be reasonably profitable and still affordable. Time is not as on hand as you think when the country you're dealing with is a whole day ahead of you literally. Plus the language and culture gaps. Then shipping back over/to wherever.
But if you go stateside you're cutting your margins 50% to 75% for the same end retail price...apache comes to mind.

Long story short...it's not 1,2,3 easy. But yes doable.
 
Top