So I am leaning towards a Pendant setup again. My wife has some design input as this is our living room, and she does have a better eye for form than I do. I am the function guy. So I did a quick sketchup and was thinking something like this Attachment 903605
It would be optimal to use a single COB per pendant. Is the Vesta tunable a viable option ?https://bridgelux.com/sites/default/...%20Rev%20F.pdf
I am assuming I can adjust the height above the tank to get the right coverage, and use the TC421 to adjust color and intensity (dimming). I really would like to passive cool as this is my living room, and our main movie/tv watching area. If these xeon coolers aren't the right one maybe something purposefully built.
Anyone have experience with FrigoDynamics? They have some great looking products but I bet they are really expensive. http://www.frigodynamics.com/images/...idgelux_EN.pdf
This is one of the deepest, but most rewarding rabbit holes I have fallen in for a long time, so I thank everyone here for the much needed diversion.
Bare COBS higher than 5" off the water line start to flood the room more than the tank so, now you are talking bout lenses..
Suggest reflectors, angle will depend on height.
Tune-able COBS are fine.
Gets a bit difficult on how one "tunes" them though..
Maximum Drive Current is maximum combined drive currents between both 2700K and 6500K channels. For example, if 700mA is applied to the 2700K channel, no current may be applied to the 6500K channel of the array. If 350mA is applied to the 2700K channel, then a maximum of 350mA can be applied to the 6500K channel.
Gets a bit tricky if you don't use a specialty 2 channel driver .
you can use 2 350mA drivers to run one COB to keep within the guidelines.
Thing is if you like a "white" (6500k) tank most of the time you "waste" 1/2 the COB.
Using the 350mA as a baseline and what one would run the 6500k at (or a small % of 2700K)
you min # of COBs is 10..to meet the "minimum wattage"
At 350 and ONLY 6500k channel est output is 80% of test sooo 129L/W x .8 x 12W X 10 chips = 12384 Lumens
Of course just a subset of "PAR"
Now much depends on what your preferred look is. From guessing "popular opinion" most prefer a white(or blue white) white over a yellow white so that i why arrays usually run at least 2:1 cool vs warm white
You know as a starting point you only need about 120W of leds over that tank.
Adding more COB's at lower drive currents and smaller heatsinks is prob a wash over adding fewer cobs at higher drive current, and larger heat sinks