DIY "DIY 260w QB Kits"

[Complex]

Hey,

I'm considering trying to piece together the components to put some QB 288 fixture(s) together, instead of buying DIY QB Kits as is (for example the 260w kits). I'll post the original message I had asked LEDG below...:


"Could I get your advice/suggestions (warnings, lol) on a couple potential setups I'm thinking of (with QB 288's)?
I feel like I could maybe do better than two 260w kits for $808+tax.

Maybe:
Two "2 piece QB 288 with slate double heatsink combo" kits (just 2 QB's and 1 double heatsink) at $230 each = $460 CAD

Paired with either (prices from arrow.com):
One HLG-480H-C2100A/B ($140) OR
One HLG-600H-54A/B OR ($212)
Two HLG-240H-C2100A/C2800A (2x $72) OR
Two HLG-320H-C2800A/C2100A (2x $105) [This was a "build" someone on grasscity did, said it was about 350watts with two QB 288's].

..So build an HLG550 or two 260W Kits for $460 + $140 + ~$30 Shipping = $630 +tax = ~$720 tax incl.
The two 260w Kits for ~$838 +tax = ~$950 tax incl.

Could save around $220 going that particular route...am I missing something (other than connectors and power cord)?

Would the 2100 vs 2800ma just mean you're driving the boards a bit more for a bit less efficiency but a more light, basically?"
Also, what are your thoughts about using the 600H model (at growerslights for example), or using an HLG-320H-C2800A/C2100A(?) drivers to make higher wattage/"over driven" ~350watt "QB 260w kits"? Is this stupid, dangerous, wrong, inefficient, not advised or anything else? Hahaha.

Thanks for any help people.
Peace.

[Aolelon]

There is also the https://growerslights.com/products/hort ... rd-led-kit
which is basically what youre doing for around the same price.
And yea the difference between 2100mah and 2800 mah is just overdriving the board more. Giving it higher current.

the kit i posted comes with everything you need for the same price. You can overdrive them. They are rated up to a max of 3000mAH. You lose some efficiency during the process.

here are your values..

[Complex]

There is also the https://growerslights.com/products/hort ... rd-led-kit
which is basically what youre doing for around the same price.
And yea the difference between 2100mah and 2800 mah is just overdriving the board more. Giving it higher current.

the kit i posted comes with everything you need for the same price. You can overdrive them. They are rated up to a max of 3000mAH. You lose some efficiency during the process.

here are your values..

Yea, that's where I got the idea for using that 600H-54B and board combination; growerslights.com, lol. Cool.
I don't like the giant one piece heatsink with all boards on it design, not for my intended purpose. I'd prefer fixtures of two boards.

So if using two QB 288's with a 240H-Cxxxx driver, like the actual HLG 260w kit uses, what would the difference be between using the C2100 vs. the C2800 (functionally)?
I'm looking at the info at arrow.com and it looks like the actual output voltage ranges are different (and inversely proportional to current, makes sense, lol.) I kept trying to make sense of the ~320w with 120v AC but I guess since the drivers are constant current they're adjusting the voltage.

If both 240's, apparently, can produce ~320w, does it matter which one ya use? Would the C2100 run cooler because there's less current running through it, anything pro/con like that? Over thinking it maybe.
For example, wouldn't using the 340H-C2100A over the 340h-C2800A be better because they'll both produce the same wattage but the C2100 won't put so much current through the boards (3000mA being the max)...Is that right?

I'm basically trying to build QB 288 260w kits cheaper than $404+tax CAD each. But if they can also be a little more powerful than the "stock" kits, that's preferable. If I can get two "2x QB w/ double slate heatsink kits" (in 3000k) from HLG (or wherever), and then the drivers else where, I can do it for about $635-675+tax CAD (for two "260w kits"/fixtures).

Thanks for the help.

[Aolelon]

Im not 100% sure how it all works as im still new, but running the 2 qb288s with a 320h-2800 compared to the 240h should give you more since you're running at 2.8a instead of 2.1a but yea like you said temperature and efficiency will drop due to heat loss, but you will be outputting more light. Also you wouldn't want to use the 320h-c2100 over the 2800 because you're throwing way more volts at it than you need. With 2 boards you only need around 105v so if you're giving it 45 extra volts your going to increase you're temperature pretty high im thinking.

If you wanted more power the c2800 would be the way to go as you're not overpowering it to much. The 320h-c2800 will give you an output of 320w while the 240 is giving you 240.
But like I said im not 100% sure Lol I know im in the ballpark though.

[Aolelon]

Of course if you got the 320h-c2100 and dimmed in about 75% then you would be in the proper range and that could be a viable option. I just wouldn't run it 100%. but then youre really only getting the same wattage as the 240.

[Complex]

Decisions...

Well, the bad part is there are no 3000k boards to be had anyways, and there are certainly none in Canada (with domestic shipping). And there are no kits that have 3000k boards in them either. Even the kits in stock at us sites are being sold with every spectrum but 3000k... yet there are plenty of HLG 500's being sold (and given away! ) with 3000k in them.

Guess it makes much more cents/dollars putting what 3000k boards they do have into the most expensive fixture they have. Which kinda sucks for anyone wanting to DIY 3000k goodness.

If there were any other equal (in quality/output etc, and price) I'd be lookin' at it. There just isn't.

[LEDG]

Dang. If they came available, I would drive them at 2100mA rather than 2800mA. That’s too close to max for my comfort. The driver their kit comes with is plenty powerful for 2 boards. So, you could run 2x HLG-240H-C2100 drivers (each powers 2x QB288) or you could run 1x HLG-480H-C2100 for 4x Qb288, all on one driver.

[Complex]

Dang. If they came available, I would drive them at 2100mA rather than 2800mA. That’s too close to max for my comfort. The driver their kit comes with is plenty powerful for 2 boards. So, you could run 2x HLG-240H-C2100 drivers (each powers 2x QB288) or you could run 1x HLG-480H-C2100 for 4x Qb288, all on one driver.

Thanks for the advice LEDG.
Yea, the stock 240H-C2100 gets two boards up to about 285w right, so two of those would beat match or beat an HLG550 anyway.

*sigh*, haha. Yea, I just need the no frills kits with no driver/accesories to be available in 3000k *anywhere*, even from a US store I'd still save a significant amount I think.

Wanna sell some?
Thanks.

[Aolelon]

Growerslights.com has some 260 XW and XL kit's at 3k for 330$ each

[Aolelon]

I guess though that's 100$ each over what you wanted to spend. Seems like HLG has been out of the 3k for at least a month now