Cbx Series cobs. Cumulative info and comp.

But when it comes to choosing between something like Vero29 running hard versus CXA running soft, the increase in efficiency is not as extreme as when switching from HPS. That is why I recommend most growers run their CXA3070s and CXB3590s at 50W each. Here is how it compares:

Vero 29 running relatively hard
Vero 29 = $28
Alpine11 = $10
2.1A driver HLN-80H-42 $45
total cost $83
79W @ 37.3% = 29.5 PAR W
$2.81/PAR W (driver efficiency is 91% vs 94% for the next examples)

CXA3070 running mid:
CXA3070 AB $120
Alpine11 $30
1.4A driver HLG-185H-C1400 $70
total cost $220
156W @ 43.3% = 67.5 PAR W
$3.26/PAR W

CXA3070 running soft
CXA3070 AB X8 $320
Alpine11X8 $80
.7A driver HLG-185H-C700 $70
total cost $470
196W @ 50.4% = 98.9 PAR W
$4.75/PAR W

CXB3590 running mid
CXB3590 CB X4 $240
Alpine11X4 $40
.7A driver HLG-185H-C700 $70
total cost $350
195.6W @ 51.7% = 101 PAR W
$3.46/PAR W

CXB3590 running soft
CXB3590X6 $360
Alpine11X6 $60
HLG-120H-C350 $65
total cost $485
143.4W @ 58% = 83.2 PAR W
$5.83/PAR W
.[/QUOTE]

SupraSPL said:

Damn, this means I have to rebuild my lamps again. JK here is what we have so far in terms of "typical" numbers

CXA vs CXB 3070

If we assume a higher price for the CXB:
View attachment 3354034

If we get a similar price:
View attachment 3354035

At 2.8A, 16% more light/W
At 1.925A, 13.8% more light/W
At 1.4A, 10.8% more light/W, 12.5% less heat (and as GG pointed out a perfect match with the HLG-185H-C1400).
At 1.05A, 9.9% more light/W
At .7A, 9.9% more light/W

So basically, 10% more bud

Click to expand...

SupraSPL said:

CXB3590 3000K CB 36V class V S Vero 29 3K

View attachment 3354060

Click to expand...

SupraSPL said:

CXBs 72V class
View attachment 3356436

Click to expand...

[/QUOTE]

As of now just over 20 for sale of the 72v class of 3590 on digikey for the mar 11 delivery and next delivery will be coming first week or 2 of april I saw. SO there is limitied availability for now of the Cb bin. as others release the prices and calculations will change.

CXB3590 CB X4 $240
Alpine11X4 $40
.7A driver HLG-185H-C700 $70
total cost $350
195.6W @ 51.7% = 101 PAR W
$3.46/PAR W


@SupraSPL I will be going with this model. since you stated the 1050 driver would be hitting some limit. I am not sure what limit it was. I will be doing this cxb x6. I would have to buy 2 drivers, how does that work out? Should I just buy a smaller driver like the 160? what would you recommend?
Holder:
http://www.newark.com/ideal/50-2303cr/led-holder-cree-cxa35-cob-array/dp/39X0077

reflector
http://www.newark.com/ledil/f13838-angelina-xw/led-reflector-pc-round-wide/dp/08X5860.

http://www.digikey.com/product-highlights/us/en/sunon-led-cooling-module/329 would one of those be good Or stick with the alpine?

When I look up alpine11 on ebay there are alot of types. And It seems I may need 6, W those the holders and the reflectors my build is coming together, what would you recommend.
I am having a little troubel with heat sinks. cant find one that is 2f or 3ft long. I think 2 heat sinks and @ that length would be good. or would it be better to build a case? that would be fine on ein middle then 1 to 1.5 ft apart would be ideal, right? Honestly I dont have to much of an issue with the whole cost effciency thing. I want somthing nice That I can use for a long time

Not sure if the COB holders will fit on the Alpine11 since its surface is not flat, maybe @Positivity could answer that. ANother alternative, these Rosewill heatsinks are pretty beefy and have a larger flat surface 60mmX60mm. Weight is almost identical and it had no problem cooling my 100W generic COB at 117W.

http://www.amazon.com/Rosewill-RCX-Z200-92mm-Ball-Cooler/dp/B002CT19IY/ref=sr_1_1?s=electronics&ie=UTF8&qid=1424780988&sr=1-1&keywords=rcx-z200

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.

SupraSPL said:

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.

Click to expand...

Just curious...when i've seen you do similar write ups you include the meanwell drivers running multiple cobs which seems to be more expensive than using a single $11 driver for each one. Is there a performance boost to justify the extra cost or is it because of the dimming function?

I try to use the most suitable driver for each comparison. In this case the CXB3590s are 72V class, so we cannot use the standard $10-$15 drivers because their voltage range is too low. The HLG series offers 93-94% efficiency along with the dimmability and they are power factor corrected. Stepping up from 88 to 94% efficiency is very worthwhile in terms of heat it is similar to stepping up to a higher bin COB.

That said, where there is a will there is a way. There are many cheap 280-300mA drivers, 88-90% efficient that would work. I think there are some cheap 600mA generic drivers that could power a single CXB3590 but I have not tested any. If you wanted to experiment, you could "stack" these $3 280mA drivers and create a 560mA or a 840mA driver for less than $10. Vf range up to 80V and efficiency maybe 89%. Not power factor corrected but that is no big deal in a small-medium build. There is a thread about it, 2 drivers 1 cob. The drivers are wired in parallel on both the AC and DC side. If you use a 3 way switch to wire them on the AC side, you get the option of 3 brightness levels.

I'd add that MW HLG-185H-Cxxxx are in fact not very expensive. At $70, they're $0.35/W (with the benefits of being MW, dimmable and highly efficient) which is quite a nice price after all.

I think someone touched on it already but I didn't read it o.0 but why is the voltage so high on these now? Will there be a lower series down the road?

Scotch089 said:

I think someone touched on it already but I didn't read it o.0 but why is the voltage so high on these now? Will there be a lower series down the road?

Click to expand...

In order to run several COB in series, you need high voltage.
There's plenty of MW drivers with low voltage.

e: I got it wrong I see - you asked about CXB3590 not the drivers, right?

The CXB3590 comes in 36V and 72V class. The only CXB3590 currently (potentiallly) available is the 72V class but I do expect we will get access to 36V version at some point just like we did with the CXA3590.

Thanks supe, is there a difference in efficiency given how many it'd take to fill up so and so driver etc. Or pros and cons to one or the other besides being able to fit more per string?

I am kind of interested in running the CXB3590 @ 25W ea, which would be more ideal with the 36V class because I could use HLG-185H-C700 and put 8 on each driver. So in my case the 36V class is more attractive. If I tried to do that with the 72V class, there is no HLG-185H350 I would have to step down to HLG-120H-C350 which could only run 6 per driver.

But for those who want to run them hard, the 72V class makes more sense because they could use HLG-120H-C1050 to run a pair of CXB3590s at 75W ea. In order to achieve the same driver efficiency with the 36V class CBX3590 would require the $55 HLG-100H-36 for each COB. The upside though, you could push each COB up to 105W with that driver (That same cost and efficiency could be achieved by the Vero29 @ 1.4A or 50W).

Shame that HLG-120H-Cxxxx is only a few bucks cheaper than HLG-185H-Cxxxx.

Sick there is some good info here and some good info for the thread. I was wondering about the 36v too. I AM SURE THEY WILL BE RELEASED SOON AFTER. I believe they would have had to test the bins to put out the press release and data sheets. by all means DO NOT ACT LIKE ME and just buy it cause its new lol. That is costing me extra from what will be available in the near future.
I dont mind spending a lil cash upfront and running them at 75w a piece allowing me to cover 1.5 feet x 1.5 feet a light

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.

the holder is like a couple bucks, no big deal I am ganna shoot digi an email to force them to reach out to cree to verify lead time. Then I can just use thermal glue to connect the led to the fan or drill and trap it. the holders have easy connectors so no soldering there.but I got to sort out the connectors for the driver. I wanted the holder for connectivity convenience and thermal dissipation(read they help). Now, I just need the connectors for the fan and the know how of the wireing sequence. Off to youtube!. I will post the video for others.

Lol Im so stoked. The fans you posted have a rail mount on the side, So I can just add them to a rail as a temp mount as I mess around.looking for 3 ft rail now. with current designs not quite the best reflective material but it would work till I can make a caseing for it. I do need a driver for all the fans. right? or are they ran on same hgl? wiring sequence for leds is cake. lol other then that I think I got my build pretty down. Thanks to @SupraSPL wish I could return the favor.

I decided ordered
3x
http://www.ebay.com/itm/Mean-Well-HLG-120H-C105A-/261741899678?pt=LH_DefaultDomain_0&hash=item3cf1086f9e

6x
http://www.amazon.com/gp/product/B002CT19IY/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

6x
http://www.digikey.com/product-search/en?vendor=0&keywords=cxb3590
solder soldering lead.

@SupraSPL Thanks for all your help.

Awesome setup and good find on those Mean Wells! I hope Digikey can deliver those 3590s.

I figured worst comes to worst ill get cxa3590 cb or bd from kingbrite.

That is a screamin deal on those meanwell drivers!