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i have remote driver, fuk i cant post picture here.. The ground cable of my connecting cable go to the driver and to the frame of my fixture

you have to connect the ground cable to the driver chassis it self and to the frame of your lamp too

Hi @[897859:@suncity13]

if you ask about odin666, then he is using a 4*4

seems they removed it, but it was today online. I checked some datasheets http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_6/CLU048-1212C4_P3812_1116.pdf http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_6/CLU058-1825C4_P3821_1116.pdf...

so it must be pulsed or not?

hm, yes true. Could be the reason maybe

but i think not at this test, because look at the voltage numbers in the test report from chiledled. They are pretty high, so it was just a pulsed measurement i think.

true but it seems that supra numbers arent correct too. I think here is a good example. Page 3 https://chilledgrowlights.com/independent-lab-reports/lab-test-report-cree-xlamp-cxb3590-3500k-cd-bin

i thought there is coming something real special according to your posts, but now im a bit disappointed. it is DB bin? if yes, like i said according to cree PCT they seems not so mega killer

maybe he didnt make such a hype about them, because there are not so special like you told here. According to cree pct, the new vero 29 should be even a bit better. But maybe the reallity looks different. edit: 240Lm/W in your dreams maybe

you mean the 1st chart in the 1st picture?if yes, yea 630 seems a bit more RQE. But then look at the 2nd chart "Leaf absorptance" Or you mean something other?

so you dont know really about what you are talking ? how you can claim i was wrong if you dont have even a source?

how are they cheaper? if i compare at cutter, the 660 are even cheaper then the 620/630 and please show me some source where i can see 630 have ~20-30% greater radiometric efficiency then 660 nowadays

it depends which current you use, good 660 can be nowadays be around 56% efficiency @350ma (tc=25C)

this is wrong i think

im working over 1 years with same phenos(banasplit). i used 2 times just cobs, first time with cxb3590 3500k and 2nd time clu058 3000k both 80 cri. My little room was 115cm *75cm, used around 380watt from wall in both case. The results was good but my old lamp performed on a way better...

you guys are crazy if you think 660 is not good.... 660 are powerfull.....

i think you your claims are wrong, i used cob( 80 and 90cri) without 660 and with 660. And with 660 i like it much more, did you even tested it? or just your thoughts?