Vero 29 7th generation + active heatsink

Okay, here's my choice, please advise me.
Can't decide if go with 3x D or 2x B. Lumen output is practically equal, 3x D gives me better coverage, but I must buy one more heatsink and of course COB. Advice?

Also, second question..

SynJet Spotlight Cooler 47W

Is this heatsink okay? Want to drive them at 1.4A. I don't see heat watts, only watts.
Which driver I need for heatsink? 12DC... how much mA?

@SupraSPL @CobKits @alesh

https://www.aavid.com/sites/default/files/products/led/AavidSynJet-Spotlight-Cooler-47W-February-2015.pdf

According to the datasheet, if the Synjet is being heated by a 47W element, then the temp of the heatsink will only rise 30 degrees.

That's more than enough cooling for the D at 1.4A.


The B is at 1.4A is around 70 watt.
But about 50% of the energy going in will become light and not heat, so the synjet is more than good enough for it too.


The driver for the heatsink should be a constant voltage one.
12V yea, most should have enough power.

1 Meanwell APV12-12 can already run 3 of those Synjets in parellel

Would personally go for 2x B, mostly because of cost.

Thank you @frica !
How do I wire two heatsinks on 12V DC? In pdf there are different options, I'm confused.

Also, I found cheap MW driver here where I live for 35€. Cheaper option, because I see only for 50+€ drivers to run two COBs...
HVGC-150-1400A
This will power two B's, right?