Cxb3590 light bars

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Blinky38

Well-Known Member
Hello,

I am planning a big build with in total 84 Cxb3590. I want to make 12 bars with on each bar 7 cxb3590. Is it possible to run 7 cxb3590 in parallel of 1 hlg-600h-36a? Each cxb3590 will run at approx 2.4a and around 85 watts. I want to use the Arctic alpine 64 plus because it has a flat base, but I havent seen anyone doing this. Will the cxb3590 holder fit on this cpu cooler? If not, what are the best alternatives?

Thanks
 
Snaddehat

Snaddehat

Well-Known Member
Wow, sounds like a big project!
Yea, the arctic 64 plus is a great match for CXB3590 + holder. I use that combination myself, and believe that quite a few others here do the same.
If you plan on running your COB's at 85w each you might consider using Bridgelux Vero29 instead, and save some upfront cost. At that wattage Vero29 and CXB3590 are almost equally efficient. CXB's really shine when driven at 50w or lower

Good luck with your build mate :)
 
Stephenj37826

Stephenj37826

Well-Known Member
Screenshot_20160103-091516.png
Blinky38 said:
Hello,

I am planning a big build with in total 84 Cxb3590. I want to make 12 bars with on each bar 7 cxb3590. Is it possible to run 7 cxb3590 in parallel of 1 hlg-600h-36a? Each cxb3590 will run at approx 2.4a and around 85 watts. I want to use the Arctic alpine 64 plus because it has a flat base, but I havent seen anyone doing this. Will the cxb3590 holder fit on this cpu cooler? If not, what are the best alternatives?

Thanks
Click to expand...
VF would be a little high I would probably do the 42V version honestly. Also look into vero 29 at that current. Cheaper and decent performance. Or run 8 on the 36v version your choice.
 
Snaddehat

Snaddehat

Well-Known Member
Blinky38 said:
Hows the efficiency of the cxb3590 compared to the vero29 at 2.4a?
Click to expand...
It depends on which specific spectrum of CXB's you want to use. For instance the 3500k which is very popular right now is slightly more efficient than 3000k.
I can't remember, but i think the efficiency goes a little up with higher K's because of more blue dies which are more efficient than red. Someone correct me if i'm wrong here...
You can google the Cree PDF Datasheets for CXB3590 and see what suits your needs.
Also this is a great ressource for comparison : http://rollitup.org/t/cob-efficiency-spreadsheets.865238/
 
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Blinky38

Well-Known Member
Stephenj37826 said:
View attachment 3577214

VF would be a little high I would probably do the 42V version honestly. Also look into vero 29 at that current. Cheaper and decent performance. Or run 8 on the 36v version your choice.
Click to expand...
Thank you, I might do that. If I run 98 cobs at 2a instead of 84 at 2.4a the light spread is perfectly and I will have around 35watts a sq/ft in a 3x6m room (200sq/ft). I checked the efficiency spreads and if I understand it correctly the cxb3590 at 2a will run at approx 46% efficiency and the vero29 will run at approx 40% efficiency. This is not such a big difference so what do you guys think is the best option for lighting a big room like mine?

I've seen the new kingbrite reflectors, they are not available for the vero29 and I don't want to mount those heavy lenses. Do you guys have other suggestions for optics and vero29?

Just one more question to be sure: Does it work to run 7 cxb3590/vero29 in parallel on one hlg-600h-42?

Thank you guys
 
Stephenj37826

Stephenj37826

Well-Known Member
Blinky38 said:
Thank you, I might do that. If I run 98 cobs at 2a instead of 84 at 2.4a the light spread is perfectly and I will have around 35watts a sq/ft in a 3x6m room (200sq/ft). I checked the efficiency spreads and if I understand it correctly the cxb3590 at 2a will run at approx 46% efficiency and the vero29 will run at approx 40% efficiency. This is not such a big difference so what do you guys think is the best option for lighting a big room like mine?

I've seen the new kingbrite reflectors, they are not available for the vero29 and I don't want to mount those heavy lenses. Do you guys have other suggestions for optics and vero29?

Just one more question to be sure: Does it work to run 7 cxb3590/vero29 in parallel on one hlg-600h-42?

Thank you guys
Click to expand...
Cxb3590 3500k at 2a is over 50% efficient btw
 
Stephenj37826

Stephenj37826

Well-Known Member
you can run 7 on the hlg-600h-42a/b. if it was me id try to go with the cxb3590 3500k cd bin and the kingbrite reflectors. If you do that you can squeeze 8 of those on hlg600h-36a and the savings on the drivers and optics will save you part of the extra cost for the crees and youll get more light for your watts over 20% more .
 
nevergoodenuf

nevergoodenuf

Well-Known Member
The HLG240 is the best dollar per watts. Just build the light with remote drivers. It will be much easier to hang.
 
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Blinky38

Well-Known Member
That way I need to have 28 drivers, way to much. I'd rather make a nice driver board with bigger drivers then to have a huge board with smaller ones. Also this way dimming is alot easier as I can dim the entire bar with 7 cobs on it.
 
Rahz

Rahz

Well-Known Member
Someone was looking at using those 600s to run a 1.4 amp setup and I recommended HLG-185H-Cs, simplified wiring, similar price and weight all together... but they are available now so yea I see what you're saying.

Nothing necessarily wrong with the 600s. If you use the -42 you will only be getting a little over 500 watts from each one no matter how many cobs you use. You can get almost 600 watts from the -36 with 8 cobs.

If a cob went out on the -36 you might have over voltage kicking in til the cob was replaced, the -42 would keep on ticking. A lamp built with the high voltage drivers would shut down on cob failure, but in either case it would be rare if designed right. I would be tempted to go with the -36 if using 600s, but then again, buying a couple more -42s and cobs to make up the wattage difference may be appealing.
 
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Blinky38

Well-Known Member
Thanks for the info!

The room is 3x6m, each bar will have 7 cobs on it and in total there will be 14 bars. This way I will have the leds exactly 17 inches (43cm) from each other.

If I run 98 cobs in this room that will be around 35w sq/ft of cxb3590 3500k, ofcourse those are dimmable but is this to much light? If I use 84 cobs instead of 98, this way I can't space them perfectly even, but I will have around 30w sq/ft. What is the most ideal using this high efficiency cobs?
 
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