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im looking for a link to an in depth calculation of the roi of using cob led that accounts for hvac as well as electrical savings over the short term and drawn out over a few years i know i read it a while ago and have looked high and low for it, was hoping for someone to jump in with a link to...

How far away is it possible to have drivers away from the actual string of leds and what is the metric for judging that distance

has anyone run the spd curves for the cree xbd white in the top bins because thats what spectrum king claims to be using and he also claims 58% efficiency which i dont see being feasibly possible with that diode no matter how soft you drive it.

So is it just me or is the HLG-120h-C1400B basically perfect for these with a full string and max power but also still dimmable down to 700 ma to get that nice 58.71 efficiency?

Im just looking into the options of being able to dim the 3 drivers from one source would it be possible to use these http://www.rapidled.com/coralux-storm-led-controller-with-10v-analog-converter/ or would i need to use a 50k pot resistor? and also what would the wiring for these options look like

What would be the best driver to drive 2 vero 29s to dissipate roughly 60 watts a piece? and would 24in of the 5.88in heatsinkusa heatsink with active cooling be enough for that?

I was wondering if it would be possible to use a NO2 whipper(http://www.cookingissues.com/2010/08/11/infusion-profusion-game-changing-fast-%E2%80%98n-cheap-technique/) to quickly infuse whichever solvent would work best to then double boil down for oil it works for infusing alcohol with almost...