Help designing frame for cob LEDs

matman4444

matman4444

Well-Known Member
I just received my order from cobkits, got here crazy fast I wasn't ready yet.

I have a 20"x32"x~6' tent and I'm wondering how to space the lights for the best coverage.
I have 4 citizen 1212 that'll be running about 50w each.

It was suggested I have them staggered something like:
X......X....
....X.......X

I have the aluminum angle and was going to make a rectangle frame and try to do that, I'm just not sure with coverage what my measurements and spacing should be.

Thank you for the help!
 
Rahz

Rahz

Well-Known Member
I see the point in staggering but it's got it's own coverage problem. I would split the area into 4 and put a cob in each center, so 10x15.5" areas. The other option I would consider is a 20" line of cobs leaving 6" from the wall on each end, 6 2/3" spacing between cobs. The "ultimate" would be 6 cobs total running at 35 watts each in 10x10" footprints but if you've already purchased the driver it's not a big deal. It will be a lot of light for that space whichever way you do it.
 
S

Sickomindo

Well-Known Member
Rahz said:
I see the point in staggering but it's got it's own coverage problem. I would split the area into 4 and put a cob in each center, so 10x15.5" areas. The other option I would consider is a 20" line of cobs leaving 6" from the wall on each end, 6 2/3" spacing between cobs. The "ultimate" would be 6 cobs total running at 35 watts each in 10x10" footprints but if you've already purchased the driver it's not a big deal. It will be a lot of light for that space whichever way you do it.
Click to expand...
Like this?
 

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matman4444

matman4444

Well-Known Member
Sickomindo said:
Like this?
Click to expand...
Yeah might try something like this just with 4 instead of 6, and maybe when I get to flowering I'll add something in the middle like that since it seems there will be open space in the middle from my rough measurements

Since I'm using 3500k 80cri citizen cobs, is there a single bulb or board or something I could add in the middle with a better red for flowering?

Feel like I should have gone with the 3000 90cri
 
Danielson999

Danielson999

Well-Known Member
I think you'd be better off just making a straight line down the center with all 4. If you put them side by side in a 20" space and 6" from the sides, it makes them 8" apart from each other. You'll have 2 really nice hot spots and then more dropoff than if you space them staggered a bit and get more distance between the cobs. Considering you'll have plenty of power, I'd want better coverage myself instead of grouping them and creating 2 hot spots.
When you get a QB or something to put in the center then you can easily change your frame to accommodate. That's how I'd do it but it's not like there's a wrong way....unless you put all 4 cobs right beside each other in the center of your tent!
 
S

Sickomindo

Well-Known Member
matman4444 said:
Yeah might try something like this just with 4 instead of 6, and maybe when I get to flowering I'll add something in the middle like that since it seems there will be open space in the middle from my rough measurements

Since I'm using 3500k 80cri citizen cobs, is there a single bulb or board or something I could add in the middle with a better red for flowering?

Feel like I should have gone with the 3000 90cri
Click to expand...
Dude that's exactly what i did. I bought my cobs from Timbergrowlights but knew i needed more and after i had everything built frame and all I bought the QB. Just got lucky with the size. The 260w QB fit perfect.
 
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