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optzulu

optzulu

Well-Known Member
We will see soon enough hard numbers from the 1825 I hope you are right and the citizen has the same ore better g/w ratio then 1.5.

I dont care about companies brands I want to have a fixture that gives me the best g/w ratio If citizen does that I buy them.
 
CobKits

CobKits

Well-Known Member
optzulu said:
We will see soon enough hard numbers from the 1825 I hope you are right and the citizen has the same ore better g/w ratio then 1.5.

I dont care about companies brands I want to have a fixture that gives me the best g/w ratio If citizen does that I buy them.
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cant see why it wouldnt, its got 10-15% efficiency on the CXBs, even at low currents
 
tomate

tomate

Well-Known Member
CobKits said:
cant see why it wouldnt, its got 10-15% efficiency on the CXBs, even at low currents
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But only compared to a lower bin 3000K CXB. I think the 3500K CXB CD bin could still outperform the 1825 at it's most efficient 3000K 80CRI model.
 
Colo MMJ

Colo MMJ

Well-Known Member
What would be the best and least expensive set up (list of parts) for a 4 COB set up using Citizen and how many COBS would I need to equal a 315 W LEC? Please list all parts including driver, paste, mounting or anything else that I will need. Thanks. :)
 
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CobKits

CobKits

Well-Known Member
tomate said:
But only compared to a lower bin 3000K CXB. I think the 3500K CXB CD bin could still outperform the 1825 at it's most efficient 3000K 80CRI model.
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sure but why would you compare different CCTs? 3500K will almost always bin higher than 3000K in any series of chips. Malocan's tests had 2700k 90CRI equaling 3500K CXB CD bin. until anyone can demonstrate otherwise, we have to assume than an 1825 will outperform a CXB at any given color
 
zypheruk

zypheruk

Well-Known Member
@CobKits What citizen kit would you recommend to cover a 4ftx4ft grow tent. Spectrum best suited to flowering. Ideally something that will be as good as my 600w 400v Hps, be passive cooled. I grow 100% scrog style, maximum canopy depth is 12-18inches.
 
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nogod_

nogod_

Well-Known Member
I would not consider myself a Cree zealot but i dont have to assume anything at all from one guy's test of one chip.

I appreciate the data but there is a lot of gun-jumping going on around here.

Im going to wait for a few more builds and a few more documented start to finish grows with the citizens before I believe anything anyone's saying about performance.

The burden of proof is not on Cree, its on Citizen and so far they look promising....nothing more.

CobKits said:
until anyone can demonstrate otherwise, we have to assume than an 1825 will outperform a CXB at any given color
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Colo MMJ

Colo MMJ

Well-Known Member
zypheruk said:
@CobKits What citizen kit would you recommend to cover a 4ftx4ft grow tent. Spectrum best suited to flowering. Ideally something that will be as good as my 600w 400v Hps, be passive cooled. I grow 100% scrog style, maximum canopy depth is 12-18inches.
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Thanks for posting. I have the same question. What parts exactly are needed? Flowering for me too. I have a room but 4x4 works for me.
 
CobKits

CobKits

Well-Known Member
nogod_ said:
I would not consider myself a Cree zealot but i dont have to assume anything at all from one guy's test of one chip..
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me neither. we have 3 out of 3 people independently verifying here though, with the same results. and nobody demonstrating the opposite

burden of proof is on nobody... its data for people to digest as they see fit. at this point what we know is that the data citi presents seems to be pretty accurate (if not understated, in fact)
 
Victor6634

Victor6634

Well-Known Member
How many clu0481818 would I need for a 9foot x 10 foot room I know what I would need if I were to go with cree just not sure what I would need for citizen cobs they confuse me lol
 
CobKits

CobKits

Well-Known Member
Victor6634 said:
How many clu0481818 would I need for a 9foot x 10 foot room I know what I would need if I were to go with cree just not sure what I would need for citizen cobs they confuse me lol
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depends what current you are running them at
1.4-2.8A = about the same
less than 1.4A - a few more citis(5%?)
over 2.8A - a few less citis (5%?)

in practicality 1818 and 3590 are almost identical in efficiency from 50-100W
 
Victor6634

Victor6634

Well-Known Member
CobKits said:
depends what current you are running them at
1.4-2.8A = about the same
less than 1.4A - a few more citis(5%?)
over 2.8A - a few less citis (5%?)

in practicality 1818 and 3590 are almost identical in efficiency from 50-100W
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OK thank you . When will you be getting more of the 1818s?
 
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