Introducing CobKits.com - specializing in DIY and Citizen COBs

well extruded has other advantages. save you 3-4" in height in many cases

slappy, it would work fine for yours at 35W

Nah still feel them long sinks bars are a waste of mass between the cobs

if ya like bars then get these best of both worlds pins & bars

https://www.rollitup.org/t/mod-420-horticulture-cob-lighting.918613/page-5#post-13185879

CobKits said:

i have those... theyre ok. cheap but the base is thin so not as ideal as some of the thicker models. for much over say 30W/chip they are prob better used as actives with fans right over each cob

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yeah, i plan on mounting a fan over each cob. fans and fan drivers are cheap. im looking at less than 100 to fan each cob. plus i get more practice soldering and wiring things lol.

im still not dead set on these bars. if you say individual is more efficient at cooling then i will go with those. i WILL NOT sacrifice function for looks. if they are even side by side i will do what looks better.

If you shroud them like growmau5 did you might be able to get away with less fans per heatsink

Sorry about that. Thank you for helping me correct order.

getting ready for my order to come in

hey @CobKits the data page for the MeanWell HLG-120H-48A Driver says max 2.5, but you mention it will output 2.95A max current. How? Must i press a button?

Trying to figure out the cooling for running 2 Luminus on that driver.

If the max is 2.5 then i can safely use a 120MM, but if it's 2.95 i gotta get something with more cooling.

How long are orders taking to process?

Silver or lead said:

How long are orders taking to process?

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chips = same day or next day
orders with heat sinks and international orders = few days to a week
special orders like light engines = week to few weeks

eyderbuddy said:

hey @CobKits the data page for the MeanWell HLG-120H-48A Driver says max 2.5, but you mention it will output 2.95A max current. How? Must i press a button?

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just turn the current pot all the way clockwise. look at teh test report, not the datasheet, its more realistic. all the meanwells are underspec'd

eyderbuddy said:

Trying to figure out the cooling for running 2 Luminus on that driver.

If the max is 2.5 then i can safely use a 120MM, but if it's 2.95 i gotta get something with more cooling.

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the 120s work fine at 1400 mA, 140s are better but 120s still keep chip in spec its not gonna burn it up.

you dont HAVE to run them full tilt

couple of quick updates:
-out of BJBs for clu048 right now, plenty of ideal holders tho. BJBs back in stock in 2 weeks
-all orders placed before yesterday shipped last night (aside from custom light engine orders which are in the works), USPS tracking is lagging due to the holidays i guess
- i just ate shit and slammed my head on the ice, ill be resting for a day, so dont freak if i dont get back to you right away, be careful out there!

CobKits said:

just turn the current pot all the way clockwise. look at teh test report, not the datasheet, its more realistic. all the meanwells are underspec'd

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I just did this with mine, I hadn't touched it before. I got one "click" brighter which is sorely needed right now.

What is the other pot for? It didn't seem to do anything.

I have just 100 watts of 4 1212s over a 2x3 area and I know they need more light but I must say I am really impressed so far.

got mine all powered up finally. big thanks to cobkits for all the parts and the RIU discount these are some happy bitches right now.

Silver or lead said:

What is the other pot for? It didn't seem to do anything.

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it will adjust voltage from ~44V to ~53V, which will have an effect with 1818 but not with 1212 (as every position on there is above the cob operating voltage, it cant limit it to dim it

Was wondering what set up you might recommend for a 32x32 tent (flower spectrum) any advice would be appreciated.

4x cxm22 on an hlg-320h-c1400 driver

update:
made a major breakthrough on the clu-058 light engines. all new ones will be second generation with detachable reflectors (previously you had to unmount the chip to take off the reflector, as the reflector and the chip shared mounting screws). just a better setup all around. just spent two hours dremeling a bunch of the new holders, am covered in microscopic plastic bits (thank god for respirator lol). in addition to being better mounting for the chips, its just better optics all around- no relieving of the reflector and light leaks off to the side. reflector sits squarely and throws better pattern, users can remove reflectors easily as needed, or use any of the other compatible angelina designs with different angles, etc.

also will be adding mounting/hanging hardware inspired by @pop22 (thanks buddy i owe you one... scratched my head on this for a long time but you made it so easy

so.. a major upgrade and thanks to you guys who are waiting patiently... it will be worth it!

i will have the hanging hardware on tuesday and plan to ship them all on that day (usps 2-3 day, so we have them before christmas)

CobKits said:

4x cxm32 on an hlg-320h-c1400 driver

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Thanks, though I couldn't seem to find the chips on your site only the cmx22's. Do you have the cxm32's in stock?

no, and won't, citi 1825s (stocked) or 3618s (by special order) are it for big chips

oops, i see the confusion! that was a typo, should a said cxm22 in my initial reply to you