COBs - DIY or buy?

[LedTestLab]

Yes I know how he looks)) but why you use reflector?)

 

[Lonestar11]

I would assume to direct more light to the projected area, not as spread out.

 

[LedTestLab]

Yes but glass lens do the same and also protect chip

 

[LedTestLab]

And also the best ppfd measures is at 65cm from plant

 

[LedTestLab]

What I want to say- in this cob stuff is better once pay lil bit more then pay less for unfinished stuff and decrease a lifetime for not cheap leds. Can I ask you what is the base temperature of your light?

 

[LedTestLab]

For example make a measurement when your light is working some 2-3 hours what is the temperature of heatsinks

 

[Lonestar11]

Don't have a temp gun. Maybe I will invest in one. Haven't received these lights yet. And how are these considered cheap when all of the components are from leading manufacturers? Because they don't have a lens? Which decreases efficiency?

 

[LedTestLab]

Tell me please what kind of drivers run those 5 cobs? And what chips do you chose - cree, citizen? Good lenses for 5 cobs will cost 25€ each if you buy some 50 lenses thats the difference in price +\-

 

[LedTestLab]

And no Im not telling that stuff you're buy is bad, he is much better than mars stuff for sure

 

[MrCanada]

No I'm here to they do lenses)) I'm just saying that led chip lifetime will be for 40% longer if you will use lenses. Those lens have 120 degrees angle so, you need to decide what is more important for you led lifetime or reflector...

I hope English is your second language cause I can't track a god damn thing you're saying.

 

[Lonestar11]

Lmao I'm kind of putting it together, his English is probably better than my (any other language). I went with Citizen chips. MeanWell driver.

 

[LedTestLab]

Ok nice choice. Citizen at the moment is the best. Showing the best results in lab. But try to figure out something to cover chips, because they are covered with silicon and silicon will drain the dust. And what wattage is drivers?

 

[Devil]

I was under the impression that Cree was the top cob at this time??

 

[Lonestar11]

That is what I thought as well

 

[Lonestar11]

Meanwell HLG-240H-C1400B is the driver

 

[Fsanti1226]

What color is best for the cob? Warm white / cool white ?

 

[Lonestar11]

From what I have read , 3500K is best for full cycle. You can obviously adjust your chips according to your needs. All 5 of my COB's will be 3500K

 

[Fsanti1226]

Can I run 4 vero29s on a meanwell 240/ 1750ma driver?

 

[MrCanada]

Sorry for questions hour, but with that rig you bought how many square feet does that ideally cover?

 

[Lonestar11]

Sorry for questions hour, but with that rig you bought how many square feet does that ideally cover?

If you're talking about mine, up to 3'x3'