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best to email me if you need assistance sales at cobkits dot com

people dont run arrays of 1000W space heaters also arc tubes have a pretty identifiable thermal signature. space heater elements dont get nearly as hot

aluminum is extremely heat conductive. extra thickness only helps in dissipation away from chip

optic 6 use ancient cheap cree cxb 2540s and runs them hard. not an efficient unit

those cobs are 4 years old and not worth building a fixture around imo those numbers are meaningless would not buy that or the blomm

holy shit growlightresearch douching up another thread - im shocked this is why we cant have nice things

i dont think theres really been a decent side by side to prove substantial differences @Rahz and @The Dawg have attempted side-by-sides but id say the results really werent conclusive

its not a new type of LED its an overpriced version of an old type of LED buy these instead at home depot. a 4-pack is $15 and its the same amount of light...

well this may be a simplification but wouldnt a 5630 have almost twice the footprint to dissipate? i may be missing what youre laying down but that seems pretty elementary im surprised voltage is affected significantly but droop is real when dissipation is lacking i guess

the mecha doesnt accept holders for clu058. if you want to use that chip with that heatsink you'll need to hard mount it and solder it, which also leaves you without a reflector option unless you hack it. (doable but it requires drilling and dremeling, look closely at the pics of the 1825 light...

i guess that woulda been a little easier to read. the cxb3070 would still be 36V data though thats my experience with CXB they really dropped off at higher currents (fantastic at low currents obviously. I was never a fan of the alumina ceramic and wondered why that was a design decision. at the...

i see the CMAs are now in Cree PCT. CMA3090 seem to be a slight step above the CXB3070 but a good bit down from the CXB3590 in efficiency at a given wattage. do they have a larger LES CMA in the works?

nice, its about time they got with the other manufacturers on package size. better options for everybody weird that they would release these alongside the CMAs- are there any fundamental differences other than package size?

not sure where you read that

UV is not IR in fact its at the complete opposite end of the spectrum

there is a standard as i explained unscrupulous vendors will never use it because facts make their lights look bad. its really that simple. you cant force those companies to be ethical, they dont care. the only reason they have is because of bulb availability. the majority of the bulbs used...

very very slight spectral shift but inconsequential for our purposes your plants and electric bill will love the extra efficiency though

yo email me if you have questions

my act as a supplier of well-characterized parts of known spec is together reputable fixture manufacturers both on and off this site have their act together unscrupulous companies who will gladly take your money and sell you equipment that will not do what they say, have always, and will always...

those guys are crooks they give no shits about furthering the industry only making a quick buck get a double ended not a single ended (30% more efficient and longer bulb life) single ended HPS are obsolete double ended HPS are almost obsolete