Mixing quantum board spectrums on the same driver

[M0e b1unt5]

hello friends! Question for those that know Quantum boards well. I have an HLG600, and right now I have 4x2700k QB288s on two slate 3s. I also have a 315 CMH right in the middle, experimenting with mixed spectrum.

so my dilemma is, I also have two 4000k boards that I would like to wire up as well, preferably on the same HLG600. This way, I can keep the same wattage but get a better lumen/watt. I’m just worried of frying something, or even worse, starting a fire. Is this something that’s doable? Right now everything is wired in parallel, but if series wiring will work I can do that. Thanks for the help!

 

[Airwalker16]

hello friends! Question for those that know Quantum boards well. I have an HLG600, and right now I have 4x2700k QB288s on two slate 3s. I also have a 315 CMH right in the middle, experimenting with mixed spectrum.

so my dilemma is, I also have two 4000k boards that I would like to wire up as well, preferably on the same HLG600. This way, I can keep the same wattage but get a better lumen/watt. I’m just worried of frying something, or even worse, starting a fire. Is this something that’s doable? Right now everything is wired in parallel, but if series wiring will work I can do that. Thanks for the help!

Just wire them up in parallel (separately wired to the main pos and neg.)

 

[diyled]

Just wire them up in parallel (separately wired to the main pos and neg.)

Do you ever actually know the answers to questions you answer, or just have a random guess.

Dont wire different spectrums in parallel @M0e b1unt5 Unless you can check that all the FV are the same, but i doubt they will be.

 

[TEKNIK]

It's best to keep them separate, even the same colours can have an issue if the forward voltage is too far out.
People don't want to give up the 2% efficiency to have current balancing resistors on boards so this problem will always occur. The only board I know of that has thought this through is Cutter Solskins but people don't understand what the resistors are there for.

 

[M0e b1unt5]

@TEKNIK , can I just purchase current balancing resistors and wire them in line? And so both you and DIYLED recommend wiring in series if I do so? What about a series-parallel where I wire two strings of 2x 2700 and 1x4000 each? I assume this would probably be the best solution for me, my HLG600 has two separate outputs for boards and I would like to keep them split if possible to be able to move them a bit more. Thanks for the help

 

[Ryante55]

Resistors are useless 99.99% of the time I'm pretty sure cutter stopped using them I think they just had them on the first version of the boards.

 

[TEKNIK]

@TEKNIK , can I just purchase current balancing resistors and wire them in line? And so both you and DIYLED recommend wiring in series if I do so? What about a series-parallel where I wire two strings of 2x 2700 and 1x4000 each? I assume this would probably be the best solution for me, my HLG600 has two separate outputs for boards and I would like to keep them split if possible to be able to move them a bit more. Thanks for the help

Unfortunately it won't work to add in the resistors after the board is built as they are needed on each string of LED's not just the overall board.

 

[Airwalker16]

I would think they'd be close enough to find a median with the V potentiometer but I guess I'm wrong.