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not really. you cant make more light than you have. the more diffuse,even light from open cobs in a tent will likely yield more uniform product

definitely must be true then

agreed. no optics in a tent

not worth it imo from a sellers perspective if i have problems with an HLG board (rare), i know they have my back. and the chips are what they say they are, no BS

in a marketing turnaround they renamed the CXC series to the more marketable LOL series product line

i had a few CXB3590s, that i put up on site if anybody is looking for those. I only have 6 so im putting them up below my cost, when theyre gone theyre gone http://cobkits.com/product/cree-cxb3590-3500k-36v/

short story: ttystiks was more work than he anticipated, ended up having to insulate all exposed parts and also blew some chips i believe due to condensation getting trapped under his lenses

theres been several if you dig back ttystikk's comes to mind

35.4V x 6 is only 212.4V plenty of overhead, it would just increase voltage towards its 238V max, at which point it would begin to drop the current. i dont think youd get anywhere near the top of driver voltage so it would be 1050 mA x whatever voltage was required at that temperature, in other...

i recommend the cxm22 over 32 in all applications. larger chips just not worth the cost at our currents

i think calculators are really only useful for comparing models within one mfr's stable STILL, its almost impossible to gauge Tc accurately which can skew the numbers pretty dramatically

i wouldnt run any cob above 10W on thin aluminum. you need at least somethign 1/8" thick to dissipate well. 3/16-1/4" is better

yes but you definitely have to account for power used pumping coolant around also compare the cost and time of water cooling to the effect of putting that money at doubling up your cobs to halve the currents, which might be the same cost and more effective lumen bump

last bridgelux tool i looked at was whacked, would give you over 300 lpw with some inputs

last gen luminus were neck and neck with veroC below 70W new gen luminus are 8-10% more efficient in my tests. not sure vero has bumped their spec in that time

400W of LED will produce as much heat as a 400W HPS, 400W MH, 400W toaster, 400W heater, etc most LEDs will produce more light than an HPS of the same wattage if its a decent LED you should be comparing 400W of LED to 600W of HPS

if the 1818s worked for you you have already mastered all the intricacies of LED. a luminus rig side by side would do the same exact thing for you with a few more bucks in your pocket and a slightly reduced power bill every month

3000 or 3500k

sorry i didnt get back to you. citizen seems to be in a bit of disarray since the LM80 scandal last year, ordering and stock is not as smooth as it was. where the gen3 luminus were better than 1818s at low currents and equivalent at higher currents, the gen4s whoop the 1818s handily across the...

there is no new gen coming, i still stock 1212s and have mostly phased out 1818s because luminus are better and cheaper