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  1. Joe34

    How to calculate PPFD for my build?

    I didnt miss the point, I got it, the point I made is that some people don't want 400% cost increase for 10% efficiency gain. If you live in a location with super cheap electricity, that 10% efficiency isnt worth the cost. It doesnt make Citizen's or Vero's shit like your always shouting. As...
  2. Joe34

    How to calculate PPFD for my build?

    @sixstring2112 Dont make me laugh, It was you who chose to compare Citi 1212 to CXB3950 from the outset. Thats comparing apples with banannas. People do use the 1825 Citi chip. The reason CREE may have came down(I still havnt seen them at $31 like u say you have) in some shops from $45 is...
  3. Joe34

    How to calculate PPFD for my build?

    What your saying is wrong again. Here is the actual stats from data sheets (the same type of datasheets you are using for your CREES) Citizen CLU058-1825C4-50AL7K3 Gen 5 1000 mA @ 50.6Watts giving 184 Lumens per watt.(gen 6 is higher but figures not provided yet) Vero 29 BXRC-35E10K0-C-xx Gen...
  4. Joe34

    How to calculate PPFD for my build?

    Thats not true, Citi's and Veros can be ran at greater efficiency than CREE... Depends mostly on how they are used.
  5. Joe34

    How to calculate PPFD for my build?

    @visajoe1 Thanks for the calculations, are those figures you gave for my builds considered ok? Or should I be changing anything? @MeGaKiLlErMaN Again same as Question above. I thought my efficiency for vero would be better than 45 -/+3 considering I am getting 190 L/pw @mauricem00 The...
  6. Joe34

    How to calculate PPFD for my build?

    Which are you refering to? vero or citizen? The reason for my wattage is I wanted to get 7000+ lumens per Sq Ft
  7. Joe34

    Anyone running the Cutter-COB275-35k?

    EDIT - my bads, I see its not even CREE your asking for...
  8. Joe34

    How to calculate PPFD for my build?

    I am planning to get either 40 x Vero 29 3500k 80 CRI and run each at 50W per 1.25 sq ft - giving 192 Lumens per watt. or 50 x Citizen 1212 3500k 80 CRI and run each at 45w per 1 sq ft - giving 160 Lumens per watt total space for these is 5x10 ft, so 50 sq ft. Would either of these builds...
  9. Joe34

    1000 real watts, DIY cobs

    Hey, Ye vero/citi all the way!! How much did each 29 SE cost? I also noticed the little reflector lip haha Yes I have 5x10 sq ft area, but going to run them soft so that I get 190+ L/pW How does it work out that you get more per driver with x voltage? I thought realisitcally that just depends...
  10. Joe34

    Anyone running the Cutter-COB275-35k?

    Vero 29 offers 185+ Lumens per watt at 50W at only $25 per cob Citizen offers 170 Lumens per watt at 50W for only $12 per cob Citizen also has some other higher priced cobs that provide >170 Lumens per watt... Why are you specifically chooseing CREE? They are overpriced. 100 Lumens per watt is...
  11. Joe34

    1000 real watts, DIY cobs

    Hey nice build, Im about to do something very similar but with 40 Veros... great to see u didnt choose overpriced CREE! Why did you get the 29 D?(and not the B, or C)? What CRI are those?
  12. Joe34

    Thermal Pads vs Thermal Paste?

    Which is considered better for COB useage? I am not concerned if one is harder/more time consuming than the other to apply.
  13. Joe34

    Can somebody calculate what L/pw I will get with Vero 29 3500k 80 CRI@ 45W?

    Thanks for the advice Rahz - Just found that Vero spreadsheet you mentioned... You said they didnt publish a 3500k 80 cri spectrum? I maanged to find a 3500k 80 CRI cob in the spreadsheet dropdown, is that what you are refering to? 194 LPW is great, how can I calculate the PPF though? Its an...
  14. Joe34

    Can somebody calculate what L/pw I will get with Vero 29 3500k 80 CRI@ 45W?

    I want to know the Lumens Per Watt for Vero 29 3500K 80CRI (BXRC-35E10K0-C-7X) if I was to run the COB at 45W (if possible?) The official datasheet is http://www.bridgelux.com/sites/default/files/resource_media/Bridgelux DS93 Vero 29 Gen 7 Array Data Sheet 20170208 Rev I.pdf However this just...
  15. Joe34

    Advice on a cob build

    Kushy I updated my post to include a link to the Vero 29 for cheaper too... And the Citi link is for verion 5 1212's, although try a search on that site they mite have ver 6
  16. Joe34

    Difference between Vero 29 B, C, and D?

    Hmmm, The datasheet lists the different voltages as they are the "commonly used" voltages. If what your saying is correct, where can I find the lowest/maximum Voltage per B, C, and D chips? Example the BXRC-35E10K0-C-7X columns under the bottom "commonly used voltages" starts off with 56.6...
  17. Joe34

    Difference between Vero 29 B, C, and D?

    Looking at the latest Vero 29 Series datasheet. We can see that each chip per kelvin has 3 entries, listed like BXRC-35E10K0-B-7 BXRC-35E10K0-C-7 BXRC-35E10K0-D-7 The vero datasheet says the B, C, or D is the Array Configuration - what does this mean? It looks to me that all chips ending in C...
  18. Joe34

    Advice on a cob build

    KushyMcKush, you can get the 1212 Citizen for $11. Dont pay $14 for them... https://www.cdiweb.com/ProductDetail/CLU0481212C4353M2K1-Citizen-Electronics-Co-Ltd/585065/ And you can get the Vero 29's for $24.50 at http://www.rapidled.com/bridgelux-vero29-gen-7-cob-array/
  19. Joe34

    Criticize my 2250W LED COB Build - CLU048 1212C4 3500k 80 CRI

    @Chronikool Yes 10 rows of 5 I am thinking to stick with 1 spectrum because I would like to do some testing in the future, mixing spectrums only makes the test results less accurate. @thetr33man Regarding the HLG-600H-36 - I saw that the spec sheet says the B version has dimming. Does this...
  20. Joe34

    Criticize my 2250W LED COB Build - CLU048 1212C4 3500k 80 CRI

    @Rusher Yes the LED benefits appear great, even a fan running lower gives the benefit of noise reduction. its definitely the way to go. I just ran some calculations using those Vero 29 you use, interestingly enough for another $500 ontop of my current price, I can buy 41 of those Vero 29 and...
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