I Went With The 1050mA Drivers With The 1812 Cause Their 50 Volt. Now The Above Statement Was Made When I Tried To Run 4 1212's Which Are 37.5 Volt On A HLG-240-1750mA Driver. My Solution Was To Drop To A HLG-185-1400mA Driver For My 1212's
Oh Yes As A Matter Of Fact All My New Cob Orders Will Be In The 90 CRI. My Roots Are Bigger And Healthier, The 90 CRI Lady Is Maturing Faster(About A Week) Also My Stems On the 90 Is Beefier And Sturdier. Oh Hell Here's Some Pic I Just Took
Nice one Dawg 90 CRI = Big fricking difference
Thanks My Brothers. I See Enough Of A Difference In The 90 Cri That Over The Next Year I Will Swap Out All Of My 80 Cri Lamps For 90's
Now That Would Be Different. Ahh Sounds Like You Have A Project Brother thetr33man
Couldn't agree more!Thanks My Brothers. I See Enough Of A Difference In The 90 Cri That Over The Next Year I Will Swap Out All Of My 80 Cri Lamps For 90's
Somebody tell me why it took so long? 
The efficacy of the cri90 chips has improved significantly over the time. I think people never considered them as an option before because of that. But they put out an acceptable to good amount of light now.I am very disappointed. Right when I upgrade to COB, you guys decide, now, after the chips have been around for years, to test CRI.
I know the short version is: "Redder is better!" I agree. Please share the LER and QER you use for the 3000K/80 and 3000K/90 calculations. Thanks.
The QER won't scale as well as a ratio so I'm not going to bother posting those figures.
Thanks for your prompt detailed response.Someone mentioned 272 as LER for 3000/90. I suspect if accurate it's based on the v2 spectrum. I haven't calculated it myself because there's no graph to digitize. The LER and QER for 3000/80 gen7 is 332 and 4.68. I have lost the spreadsheet for the calculations and experienced some confusion because I had calculated the LER for 3000/80 Vero v2 at 322, but I'm positive 332 is the correct figure for gen7 because the efficiency figure at 700ma came out to be 57%. Compared with Bridgelux product sim indicating 189 LPW at that current 332 LER is the correct figure. Also, someone else digitized the gen7 3000/80 graph and came up with 333.
I did take PAR measurements for the 1825 samples I used. Figuring the LER for them based on the Vero sample as ratios of the PAR readings will suggest:
3000/90: 314
2700/90: 285
How accurate that is (for Vero or Citizen) I'm not sure. With a 10 point spread between v2 and gen7 it's very possible the Citizen samples are lower than the math suggests. It's very sloppy and shouldn't be used as established figures. All the Citizen spectrums are available if anyone wants to digitize them
Anyway, redder is better within limits. 3000/90 did better than 2700/90 but whether it's because the red saturation point was reached or because the 2700 sample lacked the efficiency to keep up I'm not sure... but either way the real world test so far is indicating 2700/90 isn't the best. It will have a chance in the next test to provide a different result.
Bridgelux need to get there shit together and take some lessons from Citizen when it comes to SPD'sSomeone mentioned 272 as LER for 3000/90. I suspect if accurate it's based on the v2 spectrum. I haven't calculated it myself because there's no graph to digitize. The LER and QER for 3000/80 gen7 is 332 and 4.68. I have lost the spreadsheet for the calculations and experienced some confusion because I had calculated the LER for 3000/80 Vero v2 at 322, but I'm positive 332 is the correct figure for gen7 because the efficiency figure at 700ma came out to be 57%. Compared with Bridgelux product sim indicating 189 LPW at that current 332 LER is the correct figure. Also, someone else digitized the gen7 3000/80 graph and came up with 333.
I did take PAR measurements for the 1825 samples I used. Figuring the LER for them based on the Vero sample as ratios of the PAR readings will suggest:
3000/90: 314
2700/90: 285
How accurate that is (for Vero or Citizen) I'm not sure. With a 10 point spread between v2 and gen7 it's very possible the Citizen samples are lower than the math suggests. It's very sloppy and shouldn't be used as established figures. All the Citizen spectrums are available if anyone wants to digitize them
Anyway, redder is better within limits. 3000/90 did better than 2700/90 but whether it's because the red saturation point was reached or because the 2700 sample lacked the efficiency to keep up I'm not sure... but either way the real world test so far is indicating 2700/90 isn't the best. It will have a chance in the next test to provide a different result.
