see4
Well-Known Member
Ahh, my mistake. I was under the impression you managed to test the difference between real 561c and not real ones, ie. Epistar, etc.thats correct.
It would be difficult to identify 561b vs c without a good control
with the variations in diode number and copper between different boards when i say control i mean exact same board
3000k 80s and heatsinks by the end of this week
So, if I am correct to assume, I can tell by look, and if not, then by PAR, CLI and lumen output?
Edit: Meaning, that if I were to purchase a 304 QB from HLG or supplier, and then test with a Chinese 304 board I purchased, that if the PAR and lumens were the same, it would be safe to say they are roughly the same diodes? That would seem logical to me.
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