yeah i built myself some awhile back. with the 50mm fan that can mount to those heatsinks (just needs run with a tap), ive run em at 150W per heatsink. heatsink gets pretty warm but with the 4 cobs spread out it maintains decent efficiency
im looking forward to getting some photometrics on those. back when i originally tested some cobs vs QBs, 3 1212s were matching the first gen boards in ppfd/W in my basic tests. so that 4 cob setup is an elegant fixture that should match current boards, and the luminus 4 cob rig should be pretty off the charts
glad to be back on RIU, i kinda fell off the map for awhile after the accident, took a while to get back to a-game. was able to maintain everything but not really innovate in the way i would like. i guess i should count my blessings. after this crazy recent deal, it looks like a lot of small businesses are not coming back at all. Grateful for all i have <3