8x Cree CXB3590 CB 3000k

[Sxott]

I thought I would share my recent projects with you guys. Thanks for all the good help and info here.

8x Cree CXB3590 CB 3000k
8x Chiploc COB Holders.
2x HLG-185-1400C Drivers
4x 7.28" x 20" Heatsinks
4x 200mm Hydro Dynamic PC fans
2x 100k Potentiometer (for dimming)
1 Wall wart to run fans.
Various, tape, thermal paste, zip ties and wire connecters...ect.

Space Coverage Im using it for: 4x2 tent.

COB Specs:



My light specs:

65,600 Lumen
About 400 Watts
390 (dissipation W) * .5167 (COB efficiency) = 202 PAR W
202 PAR W/8 ft² = 25 PAR W/ft²
25 * 10.7 (ft² in 1 m²) = 267.5 PAR W/m²
267.5 * 4.88 (umol/PAR W for CXA 3000K) = 1305 PPFD. (minus small % for lateral and upward scatter)
The light only gets slightly warm. Cooler than the top of a fridge.
Runs on 110 or 220 (I use 220)

The Pics:

The four center lights are on a different driver and dimmer. The 4 outer ones are also on their own. It keeps me from having to use the whole light to get one plant going. I can turn the outers up when it spreads out. Or just dim both sets down for vegging a whole area. There are quick disconnects going to the cobs so I can remove the fan and drivers from the top as a separate unit for maintenance. This is also why I dont have holes drilled into the frame for the dimmers.

 

[butterbudface]

Fucking sweet! Throw some plants under there and start a journal!

 

[SupraSPL]

Clean build, huge intensity and awesome efficiency, nice work man. What more could we ask for besides cheaper price LOL

 

[Positivity]

Wow..nice builds are piling up! Can't spread the light much better than that

Pretty sure your going to be really happy with that light..

 

[HydroDC]

VERY nice. I love the neatness and symmetry. Not to mention that it will work so well.

 

[DoctorDelta9]

Looks awesome man. Can't wait to see em.in action!

 

[Sxott]

Thanks guys. I cant wait to get these things growing myself.
I have 6 alien stardawgs and 6 GG4 I started a while back that can be flipped soon as I get them in here.
I just have to put together a a trellis for them to go on.
Ill make sure to start a couple journals.

My first light will be in a second 4x2 matching tent.
Its a 10x CXB3070 AB running at 1.05 and its still in the cabinet. Im going to pull it out and put it together just like this one in the new tent instead. Just need a little time to throw it together. Already have the 140mm fans and aluminum angle. But here it is for an idea of anybody is interested in doing a cabinet build.

10x CXB3070 AB
5x 5.88 x 20" Heatsinks
2x HLG-185-1050C Drivers
There are 5 80mm fans pulling air from the top front of cab, over the heatsinks and out the back. (Each heatsink will have 1 140mm on top after I rebuild it)
The back is hinged so it can drop down for maintenance. The drivers would have been mounted on the back.

365 (dissipation W) * .5128 (COB efficiency) = 187 PAR W
187 PAR W/8 ft² = 23.4 PAR W/ft²
23.4 * 10.7 (ft² in 1 m²) = 250 PAR W/m²
250 * 4.88 (umol/PAR W for CXA 3000K) = 1220 PPFD.









I will prob convert the cabinet into a vero 13 or 18 veg cabinet after I pull the light out.

 

[uzerneims]

just sick!
can't wait to see something under them ;<

 

[the dopest]

What they said!!

 

[Randomblame]

Ohh-Noo! Who's the f... ...
Have just completed my first builds and was sooo proud and now you come and presenting equal 2 stage lightings with almost twice the impact?!?
I'm green with envy, Lol!!!
In earnest, I like the vertical airflow on your 3070's, but have similar plans rejected in favor of a thinner case. Really nice, especially the caseless 3590's build! Very clean and perfect cooling.
I will definately follow your thread. But I would think both of your builds would better cover a 4x4 tent, because 23-25PAR / w per sft's is almost a bit overkill. Ahh, I forget, I have seen dimmers...!¿ (too early in the morning here,Lol!)
But I'm sure you can get higher results in bigger tents.

 

[Sxott]

Here is an update. I moved the 10x CXB3070's out of the cabinet and into its own tent. Added some 140 mm fans on a fan hub so I didnt have to cut the fan wires and splice them in. Makes swapping them out easy if one were to go bad. Connected both drivers to a 100k pot. It dims much smoother than the separate 50k pots for some reason. And the pic of the 2 tents are dimmed down to 200 watts each. They get much brighter

 

[Sxott]

Also.. On the first tent. I added one of them cheap 4" duct boosters at the top of the tent. Temp only went up 1° F with it zipped up at 200 watts.

 

[tick tack toe]

Any reason you went with the CXB3590 over the CXA3590?

I'm looking to copy much of your build with 4 cree lights. Looks nice and easy to build

 

[Sxott]

The cxb are more efficient. More par per watt

 

[Boppa]

did you need the 2x HLG-185-1400C Drivers?

I've seen a similar build with the hlg-185-700 drivers. Asking as I am planning a similar build for my first go at it and I am looking for the right parts.

nice job on the build

 

[Sxott]

Yes. 2 of them. 4 on each driver.

The 3070 build is 2x 1.050 drivers. 5 on each.

 

[Vescovi]

So you are running each CXB with how many mAmps and Volts?
Sorry, no electrician here as you can see... Just a noob.

 

[coolj]

whats tents are you using?

btw your diy lights look great.

 

[coolj]

I thought I would share my recent projects with you guys. Thanks for all the good help and info here.

8x Cree CXB3590 CB 3000k
8x Chiploc COB Holders.
2x HLG-185-1400C Drivers
4x 7.28" x 20" Heatsinks
4x 200mm Hydro Dynamic PC fans
2x 100k Potentiometer (for dimming)
1 Wall wart to run fans.
Various, tape, thermal paste, zip ties and wire connecters...ect.

Space Coverage Im using it for: 4x2 tent.

COB Specs:



My light specs:

65,600 Lumen
About 400 Watts
390 (dissipation W) * .5167 (COB efficiency) = 202 PAR W
202 PAR W/8 ft² = 25 PAR W/ft²
25 * 10.7 (ft² in 1 m²) = 267.5 PAR W/m²
267.5 * 4.88 (umol/PAR W for CXA 3000K) = 1305 PPFD. (minus small % for lateral and upward scatter)
The light only gets slightly warm. Cooler than the top of a fridge.
Runs on 110 or 220 (I use 220)

The Pics:

The four center lights are on a different driver and dimmer. The 4 outer ones are also on their own. It keeps me from having to use the whole light to get one plant going. I can turn the outers up when it spreads out. Or just dim both sets down for vegging a whole area. There are quick disconnects going to the cobs so I can remove the fan and drivers from the top as a separate unit for maintenance. This is also why I dont have holes drilled into the frame for the dimmers.

I like this tent and light set up!!!!

 

[Sxott]

The 8x CXB3590 are at 1.4 amps
The 10 CXB3070 are at 1.05 amps
All the info is at beginning or thread.

Tents are secret jardins ds120w. The taller one is just a newer version of it.

There is a third cxb3070 light on the table right now and another tent in the box.

My state limits my plant count for medical marijuana.
so,,, Im trying to maximize each plant by keeping them in thier own tents and on thier own light cycle. This way I never have any down time or need to keep mammas and harvest are spaced apart so I never go over my "on hand" jarred up weight limits.