PAR test of cree vs citi vs cutter

[ttystikk]

Winter is for basking in the sun in the tropics with harvest done
one grow yearly and thousands of pounds

And that's good for commercial grade; nothing wrong with it.

 

[sethimus]

I'll stick with the nothing will ever compete with it View attachment 3704669

all wrong, its orange inside and white outside.

 

[tstick]

I'll stick with the nothing will ever compete with it View attachment 3704669

....yeah except for the fact that it gets cloudy in many places...obstructions like surrounding trees, etc. Realistically-speaking, gigantic grows are just not applicable to most growers. But yeah, if I could run the Sun at my will the way I wanted to....can't beat the price, either!

 

[Bill Lidgate]

A little engineering can help nature out...

 

[ttystikk]

A little engineering can help nature out...

Larry Niven to the rescue!

 

[sixstring2112]

Winter is for basking in the sun in the tropics with harvest done
one grow yearly and thousands of pounds

Kinda irrelevant in the led section lol.
@BOBBY_G keep up the testing.

 

[Rocket Soul]

Subbed

 

[BOBBY_G]

by request of @tomate

CLU048 1212 3000K 80CRI vs 3590 3000K 80CRI CB bin



lil' $12 chip hangs pretty tough, esp at ultra-low currents 0.3A and below

i dont have an 1818 to test yet but it seems
1212 is the budget alternative to 3590 at a<10% efficacy penalty (call it 3070-ish)
1818 should be about neck and neck with 3590 - TBD
1825 is more efficient than 3590 above 30W

 

[BOBBY_G]

wanted to post the most current version of the 5000K 1825 vs CXB3590 here. I dont have a 70CRI 1825 to test, nor an 80CRI 5000K 3590 (which tops out at CD bin), so heres the best we can do for now

 

[BOBBY_G]

3000K w/90CRI 1212 added

 

[optzulu]

Bobby_g
Great work men can you do a 1212 3000k cri 70 ? I think thats a very good flowering cob

 

[tomate]

Thanks a lot @BOBBY_G !

So for example if I replace one CXB 3590 running at 1 amp with three CLU048-1212 running at .3 amp, the 1212 will outperform the 3590 by lets say ~10% with an additional advantage of a better, more evenly light spread.

If my calculations are correct, than this would be freaky awesom.


Thank you very much @BOBBY_G

btw. could you post your raw measurement data?

 

[BOBBY_G]

Bobby_g
Great work men can you do a 1212 3000k cri 70 ? I think thats a very good flowering cob

sure if you send me one

 

[BOBBY_G]

 

[tomate]

thank you!

Do you maybe have some data of the cxb 3590 cd 3500k 80cri for comparsion?

 

[JorgeGonzales]

Hey neat, that lines up well with the LER numbers @robincnn got from Citizen vis a vis the 80 vs 90CRI numbers.

https://www.rollitup.org/t/cheap-and-cheerful-diy-using-citizen-cobs.909460/page-9#post-12717768

What's cool is how close Citizen and my digitized SPD numbers were. 3500K 80 and 90CRI should have almost identical umol/J. Once you truncate that to 400-700nm, the 80CRI would be ahead, but you'd gain ~4% far red, from memory.

It's great to see experimental testing from you and @robincnn confirming theoretical performance. None of it is 100% perfect, but when everything points in the same direction...

 

[robincnn]

1825 with BJB holder VS 3590 on Ideal holder is slightly biased in favor of 1825. This is because the BJB holder acts as a small reflector.
https://www.rollitup.org/t/lens-and-reflector-optics-for-cob.893660/page-7#post-12229578

So the test does not give the 1825 COB to 3590 COB comparison but more like 1825 COB/Holder Combo VS 3590 COB/Holder Combo

CLU 048 has a ideal holder so both 3590 and 1818 can be tested with Ideal cob holder.
In my test of CLU1818 BJB vs Ideal i see 1.75% to 1.9% gain with BJB holder.

Tested the new vero 29 sample. Looks like ew vero 29 beats 3590CD.1818 also beats 3590CD. New Vero is very close to 1818 and not enough accuracy to tell which one is better.
Will test some more and share data.

 

[JorgeGonzales]

1825 with BJB holder VS 3590 on Ideal holder is slightly biased in favor of 1825. This is because the BJB holder acts as a small reflector.
https://www.rollitup.org/t/lens-and-reflector-optics-for-cob.893660/page-7#post-12229578

So the test does not give the 1825 COB to 3590 COB comparison but more like 1825 COB/Holder Combo VS 3590 COB/Holder Combo

CLU 048 has a ideal holder so both 3590 and 1818 can be tested with Ideal cob holder.
In my test of CLU1818 BJB vs Ideal i see 1.75% to 1.9% gain with BJB holder.

Tested the new vero 29 sample. Looks like ew vero 29 beats 3590CD.1818 also beats 3590CD. New Vero is very close to 1818 and not enough accuracy to tell which one is better.
Will test some more and share data.

Plus cob spectrum vs Apogee response curve. Adjusting for that would move accuracy a little more in the right direction too.

 

[rhygin77]

I have a very novice question: should we compare between graphs, or should we consider each an independent test (because the setup or conditions might have changed between tests)? Since these are actual measurements (not theoretical calculations), I would assume they're very sensitive to distance and other conditions, unless that's controlled very carefully.

And thanks for posting these. It's awesome information.

 

[JorgeGonzales]

Actually I guess these can go here too, for what they are worth, lumens matched 1212 3000K vs Vero 18 C 3000K...prices TBD! Tj=Tc=25C the way Bridgelux tests.



Vs