IF you are new to LED and want help choosing what to buy, POST HERE!

ThaMagnificent said:

does air cooled mean it needs a fan? I thought a benefit of LED is to get around this?

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ThaMagnificent said:

Johnson vs Amare

So I spoke with both reps regarding their new lights coming out to cover my 5x9 tent.

Johnson:
"We should have a few maximizers in stock in roughly 2-3 weeks. The Maximizer is the CXB-8 with a bigger driver. They are both dimmable and for the small price difference is definitely worth the small extra cost per fixture. The CXB-8 utilizes 2 smaller drivers that are roughly 91-92% efficient. The maximizer uses a driver that is 95%+. So what this equates to is the maximizer is within 2% efficiency of the CXB-8 when both are @100%. So what this amounts to is if you dimmed the maximizer to 440 Watts you'd have more light than the CXB-8 at 440 Watts. I hope this doesn't confuse you to much. The maximizer is a DE replacement and the CXB-8 it's an SE replacement basically. I can maybe do a small discount to bring the maximizer to within $50 of the CXB-8."


Amare:
"Thank you for your interest and inquiry in our HI-LEDs. For a 5' x 9' we recommend 2 x SolarPro900(Pro9).
Designed for commercial applications specifically to replace a Gavita DE for a 5'x5' footprint. It features top-bin CREE CXB3590 COB and CREE monochrome 5w XP-G2/XP-E2, powered by Meanwell drivers @~900w. Our patented removable reflector lenses array delivers maximum coverage and intensity enabling it to generate
astonish par intensity that is up to more than 2x the par intensity of a 1000w DE @24" and an incredible 4x by 48". (Please see attached par tables and 1000w comparison.) Note: the lenses are designed for high-bay applications that need ~48" for the overlapping to maximize coverage and intensity within the recommended footprint of 5' x 5'. The Pro9 MSRP@1995 and the Pro9IC MSRP@2095. We are currently offering -25% special for this month making the price $1496.25 and $1571.25, respectively."


Any preference?

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WeedyCracker said:

Hi,

I'm still looking for any info that anybody might want to share with me regarding passive heatsinks for the CXB3590, what passive heatsinks would be best for 3 or 4 lights per heatsink?

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REALSTYLES said:

This video was a big help to me thanks @Growmau5 for the easy to understand tutorial

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WeedyCracker said:

Thanks very much Realstyles, been following your tutorials in thcfarmer, I'm about to invest in some CBX3590 lights, what would you recommend for veg lights? CD or DB 6500k? or would you just use 3500k for everything veg and bloom

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verticalgrow said:

g'day Defumador,
yes but you would be better off with hps or D/E otherwise its a waste of $$$$$
Read ur post twice so persistence pays off

VG

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Defumador said:

Thanks very much for the reply.

Why do you say that i ll be better with a HPS? Efficience??

I ended buying 2 vero 29v2 3500k with 2 meanwell 90w

Couse the leds are cheapper than a HPS for me, and heating is also a big problem(low space)

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Defumador said:

Thanks very much for the reply.

Why do you say that i ll be better with a HPS? Efficience??

I ended buying 2 vero 29v2 3500k with 2 meanwell 90w

Couse the leds are cheapper than a HPS for me, and heating is also a big problem(low space)

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PurpleBuz said:

Between the two I'd take the Johnson. Why do you ask ?

Because amare refuses to tell us how much light is actually produced by the unit. The amare may very well be a good light and may even grow better and more efficiently than the Johnson. But refusal to publish one of the most important specifications for a light raises my eyebrows, which is really nasty as I'm an old mad scientist.

another aspect is the amare has crappy distribution, needs to be raised high like a highbay light to get reasonable even coverage, removing the lens helps, but so does removing the lens on a spectrum king.

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monkeychief said:

Interesting. Unless Johnson or any other cob panels for that matter have some kind of super ninja CXB up their sleeve, removing the lenses on the Amare will have about the same coverage as any other similar wattage panel. Simple physics and reality.

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REALSTYLES said:

How do you know they will be at 90w each? Which Meanwell driver? what heat sink? Don't cut corners it will cost you more in the long run

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Defumador said:

isnt the V X A? the drive is 2.5a lpf-90d-36

i ll plant in a small Space and i ll try stealth. so heat and ventilation ll be a problem.

i havent bought the heatsink yet.

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REALSTYLES said:

Your set up so far is overpriced. You are paying way too much for those drivers. Why not find a Meanwell driver that will run multiple cobs?

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Defumador said:

thanks for the reply.

one panel i was going to use 1 led and the other 2. forgot the model of the leds drive, but it was 36v and 5.1 A. I Think it was 25 usd the 90w and 40 usd the 180w...

i asked the suplier not to send it yet, thinking about running 6 3070 at 50~60w.

about these two suplier, Johnson and amare.:
johnson uses 4 cxb3070 at 50w each, and say its to replace a 400w hps. But isnt less lumens than a 400w? why he say that? couse u can use closer?
amare use the 3070 with high CRI rate, less lumens but better color spectrum. Its is better to use the 3070 cri 90?

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PurpleBuz said:

actually no, different units have different physical layouts, reflectors, cob positioning giving them a different coverage footprint.
Example the Johnson unit is ~24"x24", while the amare unit is ~21"x21".
Prove it to yourself look at the 4x4 footprints for each unit.

and that's real actual physics with data to back it.

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ThaMagnificent said:

http://www.bcblondes.com/category-s/100.htm

anyone heard of them?

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