Running two qb648 with 150watts

SaHt420

SaHt420

Well-Known Member
I have a two board slate heat sink with two qb648. I have one wired to a 150watt driver butt would it be worth it to run both of them with 150watt just for the coverage for veg imma use a 300+ watt driver.
 
SaHt420

SaHt420

Well-Known Member
Treesomewanted77 said:
I don’t think you can run both boards off one 150w driver you will need a 240 or 320 but I would go with a 320 and a dimmer so you can drive the boards at lower wattage to prolong the life of the boards.
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Dude didn't even read op lol I said I am gonna get one lol
 
SaHt420

SaHt420

Well-Known Member
How would I wire the second board on can I just connect the positive to positive an negative to negative?
 
T

Treesomewanted77

Well-Known Member
SaHt420 said:
Second connectors on first board to connectors on second board.
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I can take a pic of one of my boards so you can see but they are 4 board 480w so not sure it will be same or not.
Pretty sure there is some drawing out there that show how to wire them but let me see what I can find.
 
SaHt420

SaHt420

Well-Known Member
Treesomewanted77 said:
I can take a pic of one of my boards so you can see but they are 4 board 480w so not sure it will be same or not.
Pretty sure there is some drawing out there that show how to wire them but let me see what I can find.
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Yea I looked around found one for wiring 2+ qb288
 
PJ Diaz

PJ Diaz

Well-Known Member
Personally I would just split the load coming off of the driver with a couple of wago connectors, then go to each individual board from there.
 
Nizza

Nizza

Well-Known Member
be careful. rev polarity or something will fry the boards on the diablo series
I think you can do it, just be sure you wire things correctly! it wouldnt hurt to reach out to HLG's support-- I've had the BEST experience with them
 
pop22

pop22

Well-Known Member
I see no reason for this not to work, in fact the driver would better with 2 boards than running with just one on some drivers, like a HLG150H-54 is not recommended. Here's why, with just one boards the Vf (forward voltage ) for a single boards can rise to 56-57 volts, too much for the driver, where as with 2 boards, the Vf will be 54V. Best thing is to contact support for their expertise on what drivers you can use.

I've run a pair on a HLG185H-C1400b and they work fine. You get about 76-78 watts per board with this driver. You certainly get a lot of light and great efficincy at this power level! And think of it this way, each QB648 is equivalent to 2 1/4 QB 288!

SaHt420 said:
It’s allll goood lol I own a qb648 an 150 driver I just wanted to know if it’s be worth running two qb648s for a lower wattage per board but same total output. I plan to order a 300+ watt driver that’s dimmable for flower to use 150+ watt per board.
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PadawanWarrior

PadawanWarrior

Well-Known Member
pop22 said:
I see no reason for this not to work, in fact the driver would better with 2 boards than running with just one on some drivers, like a HLG150H-54 is not recommended. Here's why, with just one boards the Vf (forward voltage ) for a single boards can rise to 56-57 volts, too much for the driver, where as with 2 boards, the Vf will be 54V. Best thing is to contact support for their expertise on what drivers you can use.

I've run a pair on a HLG185H-C1400b and they work fine. You get about 76-78 watts per board with this driver. You certainly get a lot of light and great efficincy at this power level! And think of it this way, each QB648 is equivalent to 2 1/4 QB 288!
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Do you have the voltage specs for the 648's? I saw a chart awhile ago, but I can't find it anymore. I was thinking the HLG150-H-54 wouldn't work with 2 boards since the forward voltage wouldn't be high enough with 2. But I'm obviously confused again, :bigjoint:

Maybe I'm thinking amps. I can't remember. I thought I had this stuff figured out awhile ago, but I keep forgetting shit, :lol:
 
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