Shitty AFN banned me...

CobKits said:

just a cursory look the 46W F strips are 168 lm/W but at twice the price...

both have their applications, neither is obsolete

by your metric vero D would be obsolete because vero C is more efficient. and vero C would be obsolete because citi 1825 is more efficient, etc.

Click to expand...

Do you remember the test where you compared a quantumboard to 4 or 5 Citi1212‘s? I believe they were gen. 5 and perform slighlty better than the QB. Is the thread still active?

@KonopCh
You are not the first one who is banned for similar expressions. ICmag and other forums do the same! They interpret it as an insult to their advertisers (on press of these). Nothing unusual..!
BTW,
the 1812's would be only outdated if they use an older generation. Run gen.6 at half current and you get almost the same effiency as from F strips.
I really like mid-power diodes on stripes and use it myself, but unfortunately they do not exist in CRI90 ... at least not with LM561c or 301b. COB's on the other hand offer a much wider spectrum range than strips.
Both have advantages and disadvantages, but you can build equivalent lights with both.
Whether you are using 4 quantumboards or 20 low-driven COB's does not matter. And Citi1212 at 1050mA for instance can also be passively cooled, eg. with an aluminum plate with added c-channels or a slate heatsink.

KonopCh said:

Vero D and C are even better than 1812. But why you changed now from 1812 to Veros anyway? And yes 1825 at the same numbers is efficient than 1812.

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was just an arbitrary example... i dont carry either 1812 or veros

the cheaper luminus cxm22 beats them both

Randomblame said:

Do you remember the test where you compared a quantumboard to 4 or 5 Citi1212‘s? I believe they were gen. 5 and perform slighlty better than the QB. Is the thread still active?

Click to expand...

its around. threads dont die here. 4 1212s beat a QB288. on the same thin heatsink which had the cobs at a disadvantage

i dont have the new QBs yet (next week), but im thinking with the relationship i know between cobs, 4 luminus should be more efficient (and better coverage).

themal management for the cobs is a cost to be considered but obviously there are unlimited options for that at all different cost points. a board at 150W vs 4 cobs at 35W - you still need heatsinks in either case, and not much at 35W per cob. Strips are a different animal im not super familiar with but they do seem promising on a cost and efficiency basis... but as stated above they also have their design limitations to consider

wietefras said:

Those are single row strips. You need two of them to compare to a single 1812.

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Why and how?
Both 1812 and 1120 mm F's (or 2x 560 mm strips) are 46-50V. Citi deliver 8400 lumens, strips a little more because of efficiency. With test above at 1050 mA and Tc 45°C.
Price is the same, around 24-28$. But the more important is penetration and coverage here for the same money with a little boost in LPW (+20 LPW).

CobKits said:

was just an arbitrary example... i dont carry either 1812 or veros

the cheaper luminus cxm22 beats them both

Click to expand...

Stop forcing CXM22 in front, because it's not that magic. With drivers also not, because they're 50V COBs, even if they're low priced.
140-150 LPW is little low for today's standards.

Oh, my good... Again... ppl are comparing apples to bananas...
COBs are better!!! no strips are!!... NO, my QB is for sure!! LOL and lol
kindergarten speech...it is like guys comparing their penis, without "asking" knowing what girls really like"want"
All depend on what u need, what kind of setup u have, what is your budget, from what part of the world u come...
A lot of more things playing a role what is better for u or not...
Even strains or phenos react differently on different spectrums...
COBs, Strips, Boards... some burple to will do the job, even a fantastic job if u good grower.
That's it!
And I don't mind that 5-10% difference from setup to setup...
The key is not to find the best tech at the paper, at the moment... the key is to find good strain, with good pheno and have perfect conditions in growing space regarding on the light u have...
no?

KonopCh said:

Stop forcing CXM22 in front, because it's not that magic.

Click to expand...

correct, its not "magic" but it is marginally better than other cobs at the same price. Youre the one picking on 1812s so go find someone who sells them i guess.

what greensea said... stop comparing apples and oranges.

Greensea said:

Oh, my good... Again... ppl are comparing apples to bananas...
COBs are better!!! no strips are!!... NO, my QB is for sure!! LOL and lol
kindergarten speech...it is like guys comparing their penis, without "asking" knowing what girls really like"want"
All depend on what u need, what kind of setup u have, what is your budget, from what part of the world u come...
A lot of more things playing a role what is better for u or not...
Even strains or phenos react differently on different spectrums...
COBs, Strips, Boards... some burple to will do the job, even a fantastic job if u good grower.
That's it!
And I don't mind that 5-10% difference from setup to setup...
The key is not to find the best tech at the paper, at the moment... the key is to find good strain, with good pheno and have perfect conditions in growing space regarding on the light u have...
no?

Click to expand...

Agreed ...at leats with most a what you said.
Effiency only matters if you try to get the most out of a given space for as less watts as possible.
Does the energy consumption not matter because you pay only 10ct/kwh .. well .. then one can see it that way!

I still contend that between COBS and LED fixtures I think the strips makes the best possible compromise from whatever angle you look at it.
I have run a 42 COB grow, that is my opinion.

Greensea said:

Oh, my good... Again... ppl are comparing apples to bananas...
COBs are better!!! no strips are!!... NO, my QB is for sure!! LOL and lol
kindergarten speech...it is like guys comparing their penis, without "asking" knowing what girls really like"want"
All depend on what u need, what kind of setup u have, what is your budget, from what part of the world u come...
A lot of more things playing a role what is better for u or not...
Even strains or phenos react differently on different spectrums...
COBs, Strips, Boards... some burple to will do the job, even a fantastic job if u good grower.
That's it!
And I don't mind that 5-10% difference from setup to setup...
The key is not to find the best tech at the paper, at the moment... the key is to find good strain, with good pheno and have perfect conditions in growing space regarding on the light u have...
no?

Click to expand...

No.
We/I are talking about lights here, put all those variabilities at the corner now because they don't matter.
When you have the best light for your money, then you automatically remove one of the variability from above. Then you can play with genetics, environment, CO2 etc..
To me, 5-10% means a lot! Why pay electricy if you waste it with 110 LPW. Or with 150 LPW. Tech goes on, we are chasing 200-220 LPW now. Less consumtion that way and more yield.

KonopCh said:

Why and how?
Both 1812 and 1120 mm F's (or 2x 560 mm strips) are 46-50V. Citi deliver 8400 lumens, strips a little more because of efficiency. With test above at 1050 mA and Tc 45°C.
Price is the same, around 24-28$. But the more important is penetration and coverage here for the same money with a little boost in LPW (+20 LPW).

Click to expand...

Why and how what? You claimed the strips were half the price, when that was only the case because you quoted prices for strips that output half the light.

So yes, now you realized they are about similar in price.

"penetration and coverage" and lm/W are pretty simlar too.

Also, how are you getting along with putting 2'or 4' strips in a 3x3 room?