You could run
3 on an HLG-120H-c1400
4 on an HLG-185H-c1400
The driver cost is close to the same. I know the HLG-185H-c1400 can have an external potentiometer - you can smidgeon down your lights if you decide to use 8 cobs in your setup. Though, @Greengenes707 did mention that 8 COB's would be...
Why are you considering such a high CRI? Color rendering index is for our eyes. Lower CRI's give more PAR, I believe.
Look at the vF consumed for each COB at a certain mA, and see how many times a drivers max voltage can contain them.
example
COB "x" has a vf of 32 @ 1400ma. Driver has max...
3500K BB
50.77% efficient at 164.541lm/watt, ran at 1400ma
8197lm
has a vF of~35.59
emits 50 dissipation watts (heat)
(you have room for a 4th CXB3070 on that driver, close to 36 vF is still available for monos or a cob)
Driver capacity = 148 vF
148 - (4(35.59)) = 5.64 remainder capacity.
I...
In terms of what will work best for the drivers -
HLG-185-1400 fits 4 CXB 3070
HLG-185-1050 fits "5.5" CXB 3070 --->5
HLG-120-1050 fits "4.3" CXB 3070 --->4
HLG-120-1400 fits 3 CXB 3070
If you are fixed on 6 cobs, go for the HLG-120-1400
Why not purchase 2 more and use 2 HLG-185-1400 and...
I'm certainly going to have to wait another 2 weeks before I can order heatsinks and drivers. I can barely contain my excitement. Have a great Sunday night.
Hey @Greengenes707, you just added new stuff to your store! Ratchet hangers, thermal pads, Ledil diffusers... I was looking for those too! Are you putting up any other products?
Thanks again buddy.