Amazon COB light, CREE CXB3590, Meanwell driver, 200w, 26000lm

Sour Wreck

Sour Wreck

Well-Known Member
What do you guys think about this pre-manufactured COB light from Amazon? Below is the description and specs. They call it a 200w light and per the specs and reviews it draws draws 200. the brand is CF GROW. The unit claims to produce 26000 lumens. This unit apparently has some quality components.

Description:
The new style professional COB LED grow light CXB3590-X2 is used for hydroponics greenhouse
tomato money plant all stage growth with full Spectrum 380nm~780nm, replace the 400W HPS
growing lamp. The LED is made by CREE CXB3590, each LED chips can reach 120W power.
Cree CXB3590 LED Chips are not only extremely powerful but they produce the best Spectrum
for your indoor plants. It takes the high light intensity of HPS bulbs and combines it with
a high PAR output similar to Red&Blue LED grow lights. Get the best of both lights.

The LED driver is made by MEANWELL, high quality to make sure more stabel voltage and longer
life of the COB LED chips. There are more COB LED grow lights CXB3590 100W 400W 600W in our store,
especially the 600W grow light is highly suitable for the flower and fruit growth of tomato money tree plant.

Specifics:
1.Model No.: CXB3590-X2
2. Actual Power: 185~200W
2.Case color: White
3.LED (Qty): 2pcs *100W CXB3590
4.Wavelength: Full Spectrum 380nm~780nm
5.Light Color: Warm White(3500K)
6.Input Voltage: 120Vac/240VAC
7.Frequency: 50Hz/60Hz
8.COB Led Brand: CREE
9.Current: 5.2A
10.Out voltage: 36VDC
11.Flux Lm: 26000lm
12.Lifetime: 50000hrs
13.N.W: 6KG(G.W:6.5KG)
14.Product Size: 540*180*90mm
15.Package Size: 630*220*160mm


Is okay to post the link to product here? i am in no way associated with this company or amazon. just starting to research COBs, considering replacing my HPS lights in the future.
 
matman4444

matman4444

Well-Known Member
Probably save $100 if you bought the parts from cobkits and built it yourself. Frame and wiring is all simple if you have a drill and screwdriver, I didn't know anything a month ago and have now built 2 lights
 
Sour Wreck

Sour Wreck

Well-Known Member
matman4444 said:
Probably save $100 if you bought the parts from cobkits and built it yourself. Frame and wiring is all simple if you have a drill and screwdriver, I didn't know anything a month ago and have now built 2 lights
Click to expand...
i think my current level of understanding is what i lack for DIY. i am mechanically inclined so building one shouldn't be too much trouble. i can even solder, if that required?

the amazon light is $320. can i build one for $200?

since you have built two, what tutrorial(s) did you use?

the light on amazon is tempting, uses good parts...

thanks
 
Danielson999

Danielson999

Well-Known Member
You could build a better light for less. You could use newer CXB's and instead of using 2 cobs, use 3 or 4 and run them softer. The benefit would be being able to be passive (no fans) and it would spread your light out more and fill a grow space better. 50w per cob or even less is all you need.
If you're into saving even more money, build a light using Bridgelux EB strips or Samsung F-series strips. No expensive heatsinks, just build a frame using angle aluminum and mount the strips to the frame. Strips offer an advantage over cobs in that they offer better coverage and cheaper start up cost. Both options have excellent efficiency.
 
DrBlaze

DrBlaze

Well-Known Member
Sour Wreck said:
What do you guys think about this pre-manufactured COB light from Amazon? Below is the description and specs. They call it a 200w light and per the specs and reviews it draws draws 200. the brand is CF GROW. The unit claims to produce 26000 lumens. This unit apparently has some quality components.

Description:
The new style professional COB LED grow light CXB3590-X2 is used for hydroponics greenhouse
tomato money plant all stage growth with full Spectrum 380nm~780nm, replace the 400W HPS
growing lamp. The LED is made by CREE CXB3590, each LED chips can reach 120W power.
Cree CXB3590 LED Chips are not only extremely powerful but they produce the best Spectrum
for your indoor plants. It takes the high light intensity of HPS bulbs and combines it with
a high PAR output similar to Red&Blue LED grow lights. Get the best of both lights.

The LED driver is made by MEANWELL, high quality to make sure more stabel voltage and longer
life of the COB LED chips. There are more COB LED grow lights CXB3590 100W 400W 600W in our store,
especially the 600W grow light is highly suitable for the flower and fruit growth of tomato money tree plant.

Specifics:
1.Model No.: CXB3590-X2
2. Actual Power: 185~200W
2.Case color: White
3.LED (Qty): 2pcs *100W CXB3590
4.Wavelength: Full Spectrum 380nm~780nm
5.Light Color: Warm White(3500K)
6.Input Voltage: 120Vac/240VAC
7.Frequency: 50Hz/60Hz
8.COB Led Brand: CREE
9.Current: 5.2A
10.Out voltage: 36VDC
11.Flux Lm: 26000lm
12.Lifetime: 50000hrs
13.N.W: 6KG(G.W:6.5KG)
14.Product Size: 540*180*90mm
15.Package Size: 630*220*160mm


Is okay to post the link to product here? i am in no way associated with this company or amazon. just starting to research COBs, considering replacing my HPS lights in the future.
Click to expand...
The big problem with that light is that the cobs are driven twice as hard as they should be, destroying all your efficiency. If you want a cob fixture delivering 200w, you want to use 4 cobs (in this class of cobs that is).

Here's a much much better choice (newer more efficient cobs as well):

https://www.tastyled.com/Tasty-LED-T22-LED-grow-light-p/t22-3000-90.htm
https://www.tastyled.com/product-p/t22p.htm

(At least you're on the right track and this isn't another goddamned Viperspectra thread :) )
 
Sour Wreck

Sour Wreck

Well-Known Member
Danielson999 said:
You could build a better light for less. You could use newer CXB's and instead of using 2 cobs, use 3 or 4 and run them softer. The benefit would be being able to be passive (no fans) and it would spread your light out more and fill a grow space better. 50w per cob or even less is all you need.
If you're into saving even more money, build a light using Bridgelux EB strips or Samsung F-series strips. No expensive heatsinks, just build a frame using angle aluminum and mount the strips to the frame. Strips offer an advantage over cobs in that they offer better coverage and cheaper start up cost. Both options have excellent efficiency.
Click to expand...
wow, thanks for the info. new to understanding COBs, but are the new CXB's the units i have seen with many aluminum heat sink fins?

50w per COB? what is the square footage coverage? 1?

Don't think I haven't considered LED strips. There is a thread here about the Sun Cloak vertical light strip system and i am impressed.

my goal is to replace HPS. i am currently planning on adding vertical led t5's to the corners of my tent, might have to slow down and looke at the Bridgelux EB strips or Samsung F-series strips.

thanks for the reply
 
Sour Wreck

Sour Wreck

Well-Known Member
DrBlaze said:
The big problem with that light is that the cobs are driven twice as hard as they should be, destroying all your efficiency. If you want a cob fixture delivering 200w, you want to use 4 cobs (in this class of cobs that is).

Here's a much much better choice (newer more efficient cobs as well):

https://www.tastyled.com/Tasty-LED-T22-LED-grow-light-p/t22-3000-90.htm
https://www.tastyled.com/product-p/t22p.htm

(At least you're on the right track and this isn't another goddamned Viperspectra thread :) )
Click to expand...

hey, thanks for links and reply, will look closer at those as they are in the same price range.

on a side note, the amazon light is dimmable, so the COBs wouldn't have to be driven at 100%.

not getting a viperspectra, lol...
 
matman4444

matman4444

Well-Known Member
Sour Wreck said:
the amazon light is $320. can i build one for $200?

since you have built two, what tutrorial(s) did you use?

the light on amazon is tempting, uses good parts...

thanks
Click to expand...
I built mine for about $200 and $250, they don't use cree chips but should be close in performance.

You don't need to be able to solder depending how you build it. The only part I had to solder was the dimming know.

http://ledgardener.com/wiring-led-cobs/
Is what I used, goes over just about everything.

I agree with what the others said about that Amazon light pushing the chips too hard.
 
CobKits

CobKits

Well-Known Member
Sour Wreck said:
wow, thanks for the info. new to understanding COBs, but are the new CXB's the units i have seen with many aluminum heat sink fins?
Click to expand...
CXB is the chip itself, and a somewhat dates one at that. any chip can use any thermal solution wheter its passive pin fins, active fan-driven extrusions, watercooling, etc

Sour Wreck said:
50w per COB? what is the square footage coverage? 1?
Click to expand...
one fundamental about all LEDS including cobs is they are more efficient if run softer.
so to get the exact amount of light that one of those chips would put off at 100W, 2 cobs at 50W would put off 10% more. 4 cobs at 25W would put off 10% more than the 50W cobs. and of course as you add more points of light uniformity of coverage and canopy penetration improves

Sour Wreck said:
on a side note, the amazon light is dimmable, so the COBs wouldn't have to be driven at 100%.
Click to expand...
all LEDs are dimmable (in regard to you can run them at whatever current you want). all popular drivers have dimming built in as a feature.
 
Sour Wreck

Sour Wreck

Well-Known Member
matman4444 said:
I built mine for about $200 and $250, they don't use cree chips but should be close in performance.

You don't need to be able to solder depending how you build it. The only part I had to solder was the dimming know.

http://ledgardener.com/wiring-led-cobs/
Is what I used, goes over just about everything.

I agree with what the others said about that Amazon light pushing the chips too hard.
Click to expand...

thanks for the reply. took a glance at your link. if we are just talking mount the COBS, wire in series or parrallel, with driver between cobs and power source, no big deal.
 
Sour Wreck

Sour Wreck

Well-Known Member
CobKits said:
CXB is the chip itself, and a somewhat dates one at that. any chip can use any thermal solution wheter its passive pin fins, active fan-driven extrusions, watercooling, etc


one fundamental about all LEDS including cobs is they are more efficient if run softer.
so to get the exact amount of light that one of those chips would put off at 100W, 2 cobs at 50W would put off 10% more. 4 cobs at 25W would put off 10% more than the 50W cobs. and of course as you add more points of light uniformity of coverage and canopy penetration improves


all LEDs are dimmable (in regard to you can run them at whatever current you want). all popular drivers have dimming built in as a feature.
Click to expand...
thanks for the info, makes sense
 
GreenLogician

GreenLogician

Well-Known Member
:) By default they come with 90 degree reflectors and 3500k, but they have a range so you can talk to the salesperson for custom choices.
(With my X6 I got 120 reflectors and four 2700k in the corners)
 
Sour Wreck

Sour Wreck

Well-Known Member
oh really, how long did custom manufacturing take? price increase for change in color or degree change?
 
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