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  1. MarCus M.D

    COB efficiency Spreadsheets

    Is there any comparative graph of efficiency in lumens, between the CXB3590 DB BIN, Vero29 Gen7, CLU058-1825 and 240pcs Samsung LM561C? Which is more efficient at different Amp?
  2. MarCus M.D

    New alternative to the quantum bored bad to the bone

    where are that result bro?
  3. MarCus M.D

    Matching Drivers and COBs

    And how about the same config, but with 1212 gen6? 4pcs CLU048-1212 fits on a MW-HLG-240-1750? CitiLED Simulator says 36.3V, 50°Tj and 63.5W at 1750mA = 145.2V and 254W. HLG-240H-C1750 datasheets says 250.25W, 143V and 146V open circuit voltaje.
  4. MarCus M.D

    Citizen CLU048-1216?

    And how about the same config, but with 1212 gen6? 4pcs CLU048-1212 fits on a MW-HLG-240-1750? CitiLED says 36.3V at 50°Tj, 1750mA and 63.5W = 145.2V and 254W. HLG-240H-C1750 datasheets says 250.25W, 143V and 146V open circuit voltaje.
  5. MarCus M.D

    Matching Drivers and COBs

    Thanks a lot to both. @randydj You could give me the data with the 8-1825 to 1050mA in 3x3 please.
  6. MarCus M.D

    Matching Drivers and COBs

    Simply awesome, thanks a lot bro. Indeed I needed the second operation. But, first example was much larger space, i think is 12.9sq.ft or 4x4 i thing, instead of 15.3. Do you guys think ( 8 ) CLU058-1825-C4 Gen6 3500K and ( 2 ) mw-320h-c1400a for a 3x3 area, close to 1400PPFD, is too much and...
  7. MarCus M.D

    Matching Drivers and COBs

    Hi guys, just a little of help please. Who can help me with PAR and PPFD for ( 8 ) CLU058-1825-C4 Gen6 3500K and ( 2 ) mw-320h-c1400a for 39x39 and 47x47. Which is roughly equivalent to 1 square meter and 1.2 square meters. Thanks in advance.
  8. MarCus M.D

    Cheap and Cheerful DIY using Citizen cobs

    Hi guys, just a little of help please. Who can help me with PAR and PPFD for ( 8 ) CLU058-1825-C4 Gen6 3500K and ( 2 ) mw-320h-c1400a for 39x39 and 47x47. Which is roughly equivalent to 1 square meter and 1.2 square meters. Thanks in advance.
  9. MarCus M.D

    Vero 29 gen 7 efficiency

    @Malocan, sorry bro, i type wrong the code, i edit first post. @Shugglet Man, this forum is about efficiency. I only want to know the numbers at 1400mA with 2 chips on HLG-185-C1400A. And how to connect them. Thanks to both, this COB is really nice. I never had a Vero29 in my hands, just CREE...
  10. MarCus M.D

    Vero 29 gen 7 efficiency

    I have Vero29 gen7 "30E10K0C726QK05600121652" According to the QR code. I got them from jerry en he said is the Type C SE Version 3000K. What is the difference between the SE version and the normal one? Can be CRI? I need to know the efficiency of this COB at 1400mA, who helps me please :clap...
  11. MarCus M.D

    DIY with Quantum Boards

    Where do you buy the IP67 transparent BOX?
  12. MarCus M.D

    Par Multiplier Thread

    So... 12 * 48,85W (cxb3590 1400mA) = 586,2W. Cree COB 3500K 80 CRI 0.014240 * 182.54 lm/watt 586,2 * 2.5993696 = ~1523 PPDF...... For 1,2x1.2mt, is that correct?
  13. MarCus M.D

    Matching Drivers and COBs

    I need to dimming the hlg-185h-c1400B (200W) and hlg-320h-c2100B (300W). - 3W 1K - 10KΩ Ohm Metal Film Resistor Resistance. - 100K OHM 3 Terminal Linear Taper Rotary Volume B Type Potentiometer Pot. I miss anything...
  14. MarCus M.D

    DiY LEDs - How to Power Them

    I need to dimming the hlg-185h-c1400B (200W) and hlg-320h-c2100B (300W). - 3W 1K - 10KΩ Ohm Metal Film Resistor Resistance. - 100K OHM 3 Terminal Linear Taper Rotary Volume B Type Potentiometer Pot. I miss anything...
  15. MarCus M.D

    3 CLW SolarSystem 550 and 4 Timber CXB 3590 DIY kits

    Is my idea or plants are more fat under the CLW then Timber?
  16. MarCus M.D

    Price suggestion for premade cob kit in Europe.

    Example from spain --> http://www.todogrowled.com/es/
  17. MarCus M.D

    DiY LEDs - How to Power Them

    Another question around here, if someone would tell me if I can run the following configuration: (4) CXB3070 BB 3500K x (1) HLG-240H-C1750. Depending on the temperature, they are between 36.04 (50 °), 35.89 (60 °) to 35.75 (70 °) Vf. At 50° x (4) = 144.6 Vf and 252.27w. At 60° x (4) = 143.58 Vf...
  18. MarCus M.D

    DiY LEDs - How to Power Them

    My mistake, thx @alesh
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