LED Driver Question(s) QB96 Elite V2 / QB 288 Rspec

2

2com

Well-Known Member
Hi,

I have a couple questions regarding some driver choices. Sorry, for the kinda odd wording - copy/paste.

I'm contemplating and comparing QB96 Elite V2 versus QB288 V2 Rspec, in performance or output. As far as raw, total output (ppfd), I would guess the EliteV2 would put out more actual light energy than the Rspec, just because it can be run harder. Is that right?

1a) If they were both on the same power driver would there be much difference in output? Say, two Rspecs on a HLG-240 compared to two Elite V2s on an HLG-240 would be more or less the same?

1b) Also, I thought there was a mention as well that the Rspecs (a pair of them) can be run on a 320H driver, and/or at 2800mA (like a c2800), as they can take a little more than the previous 288 V2s.
I'm just curious as I like the idea of streamlining driver choices/"inventory".

2b) How does the 288 V2 Rspec board being rated at slightly higher voltage than previous V2 translate to driver choices when building two-board fixtures? Instead of the 240h-c2100, or the 240h-54, could you safely run two Rspecs on a 240h-c2800? Or what about a 320h-c2100?

I'm thinking the pair of QB96's have more potential, but ran at "recommended" levels I wonder how they compare (ppfd etc). The spectrum on the Rspec looks nice, more "full" blues. The Rspecs spectrum *appears* to be a slight "improvement" (or at least increase) in a couple of wavelength areas...?

Thanks.
 
2com said:
Hah! No, please don't bug hlg on this (anymore than I have already :p)
Click to expand...

I can try an answer some of your questions.

1b and 2b, you couldn't run 2x rspecs on a 240-c2800 because its a 54v board and at 2.8 amps each would give 302.4w for both boards, that's outside the drivers power output.
You wouldn't want to run 2x 54v boards on a 320-c2100 for similar reasons , 54v x 2.1amps = 226w, waste of a 320w driver, you could though use two boards on a 320-c2800 or two on a 240c2100.

For your first question the rspec has a higher umol/j but that probably because its designed to be run soften comparison to the qb96 elite , they are much the same components so probably perform the similar but the boards have more diodes so would perform better on the same driver.
(I think)
 
Thanks for your insights. Oh, I realized there's no "2a", lol. Anyway.
coreywebster said:
You wouldn't want to run 2x 54v boards on a 320-c2100 for similar reasons , 54v x 2.1amps = 226w, waste of a 320w driver
Click to expand...
The reason for this choice is availability. And the 320-2100mA driver is the same price as a 240w driver. I'd be interested in using it in place of a 240w driver (for two Rspecs) because the 240w I wanted isn't available So if it's not a matter of looking at it like "it's a waste of a 320w driver", than would it make sense then? The only other potential issue I can think of would be dimming (the range of dimming affect by a slightly over powered driver).
coreywebster said:
you could though use two boards on a 320-c2800 or two on a 240c2100.
Click to expand...
The reason I've not gone with these two obvious/recommended choices is because the drivers I want in those ratings aren't easily available (inventronics).

Thanks again. I'll have to work with what's available. Haha.
 
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