CXB3590 1500W

Shredderthirty said:

oh well since i have the hlg-185h-c700 i will need to run the 72V to get proper efficiency and run 4 of them. but if i run 8 of the 36V it will be just as "bright" but just spread the lighting out? and be just as efficient?

i was thinking that more cobs is better with the same amount of watts going to all of them, like having multiple 600w hps lights compared to a 1000w bulb...



edith and i was planning on passively cooling the unit so that is also why i was thinking 8 of the 36V will be alright running with no fan and the 4 of the 72V would really want some kind of active cooling

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if you go for the 36v you get beter efficiency (64%) more light and better spread and if you go for the 72v will be cheap but you loose efficiency (56.3)

The 36V and 72V versions both have the same number of dies, but the 36V version is twice as wide as the 72V version, and the 72V version is twice as long as the 36V version.

Just wanted you guys to know... It took a total of 6 days from order to arrival with my cxb's !!! Jerry and kingbrite are doing big thangses!

Just that when reading the packaging I noticed it said " samples", may or may not perform like final production model". But my thinking is if they gets anywhere close, which they will, I'm all good for glory.

Another anomally I noticed was the invoice listed the products priced individually at like a 1.50$ a piece?
Is that the kind of markup one can expect to encounter in the led game?

In other news: since I'm still waiting on funds to purchase the driver, I keep changing shit up in my mind, but I think I finally decided to go with the mw 240h-c-1400b to run 5 cxb3590 36v in a 3x3...sound good to you guys? That'd b like 250 watts right?

The only thing now that I'm not 100 on is grounding... Will look to lean on you guys as I get closer to that particular application!

Stay green pony boys

Good score, the invoice price is for your benefit but you can request the larger amount if you prefer. Did you find a source for the HLG-240H-C drivers?

Hereseed said:

Just wanted you guys to know... It took a total of 6 days from order to arrival with my cxb's

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Just emailed Jerry to check stock,was that the standard China Post or did you pay extra for the DHL?

SupraSPL said:

Good score, the invoice price is for your benefit but you can request the larger amount if you prefer. Did you find a source for the HLG-240H-C drivers?

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Haven't found a source for the 240... I figured I'd just go the mouser route?

When you say "the larger amount" ... I take it to mean: what I actually paid, right?
Because the invoice stated the total value at 7.50$ and I paid 283.00 including shipping... It doesn't benefit me to know that I paid one hell of a markup ... Lol

captainmorgan said:

Just emailed Jerry to check stock,was that the standard China Post or did you pay extra for the DHL?

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The shipment did come dhl but how it would be shipped was never discussed ... When I sought the quote for the 5 , Jerry just said shipping would be about 40 dollars.

Plus I had problems receiving the invoice through PayPal... So the good folks at kingbrite allowed me to pay them as one normally would . all in all... I rate the transaction 5 stars based on availability, price (comparable), customer service, and speed of delivery!

Thanks again for the heads up fellas!

$40 is DHL,China Post is $10.

captainmorgan said:

$40 is DHL,China Post is $10.

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Wish I would have pressed for shipping options considering that I wasn't in a hurry... Was somehow under the impression that the 40.00 rate was standard... Oh well, I live to learn!

Hereseed said:

Wish I would have pressed for shipping options considering that I wasn't in a hurry... Was somehow under the impression that the 40.00 rate was standard... Oh well, I live to learn!

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The China Post can take as long as 30 days.

For some reason they seem to prefer using DHL, maybe they feel insecure using China Post because they cannot guarantee the shipment. China Post shipments are still arriving quickly but as the holiday shopping increases I expect it will get slower and slower. The price on the invoice was not his cost it was marked that way for your benefit.

they mark the price down so you don't have to pay the custom's fee (depending on country and minimum $$ amount )
where I live DHL is the only courier that adds customs charges when delivering shipments

fedex also does that in europe

I am putting together a parts list, and would like to get everything from Mouser if possible. Where did you get your heatsinks / can anyone recommend somewhere to order one from? The only ones that I can find run about $200...

smigula said:

I am putting together a parts list, and would like to get everything from Mouser if possible. Where did you get your heatsinks / can anyone recommend somewhere to order one from? The only ones that I can find run about $200...

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heatsinksusa

Funny, last I looked GrowBlu was selling Chinese made lights as their own design had too many issues. And I thought this thread was about DIY growlights, so why pitch commercial, over priced, under performing examples of why we should build our own??

In fact, their website even seems to be down......

Chronikool said:

Hey @SupraSPL.....welcome to the forum. you'll find a lot of knowledgeable people here to help you on your 1st day of running LEDs...

I suggest you have got the wrong LEDs selected and you want a commericial fixture that goes by the name of growblu. They are totally original in their ideas, are the most efficient and are imported direct from another country. You also need red and blue LEDs to grow anything....and white just doesn't have enough Lumens which is a measurement that plants use.

I like to give accurate information to newbyz...you are welcome.

PS....stay away from a guy called @PSUAGRO....he is a troll from way back...

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pop22 said:

Funny, last I looked GrowBlu was selling Chinese made lights as their own design had too many issues. And I thought this thread was about DIY growlights, so why pitch commercial, over priced, under performing examples of why we should build our own??

In fact, their website even seems to be down......

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The willingness of desperate retailers to over hype their products in order to get rid of them should never be underestimated.

The DIY crowd has the LED industry by the balls right now, we need to squeeze those motherfuckers BLURPLE until they deliver decent panels for reasonable prices!

Aluminum conducts heat so rapidly that placement for heat distribution is really a non-issue. Don't think so? Try welding aluminum with an acetylene torch.......
It can be done but...

churchhaze said:

It's a balance between optimizing for light distribution and temperature distribution. Some (SDS) would argue that optimal temperature distribution at the expense of suboptimal light distribution is better while others (me and Supra) optimize more for light distribution at the expense of suboptimal temperature distribution.

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pop22 said:

Aluminum conducts heat so rapidly that placement for heat distribution is really a non-issue. Don't think so? Try welding aluminum with an acetylene torch.......
It can be done but...

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ya know, I tend to agree with you. My outer cobs are mounted 3-4" OC from the edges of my heatsinks. One of the first questions people ask is "how hot do the outer cobs get" When I measure the difference in case temp, its a couple degrees more, negligible & and fair trade off for more even spread. IMO.

In some areas of the garden, my outer cobs run slightly cooler due to adjacent oscillating fans blasting the edges of the heatsinks.

And an associated question: Isn't running more than a couple COBs even in parallel not recommended because of voltage drop across the last LED?

spidyshan said:

The HLG-240h-c700 is not available for sale yet, but it can power 5x72v cxb3590 from 23w to 50w max. If you want to run three or four cobs still you can only run them between 23w and 50w each. Hope this helps

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Hey Growmau5! I've seen your videos, and I must say, its your light style I want to model on! Killer setup! I'm new hear on RIO. I've been reading on DIY LED for a while now and I'm getting ready to get my feet wet! Going to play with some Chinese junk COBs for a bit first, that way a screw up won't cost $$$$$$..........
And this is a great thread! Learned some new things already!

Growmau5 said:

ya know, I tend to agree with you. My outer cobs are mounted 3-4" OC from the edges of my heatsinks. One of the first questions people ask is "how hot do the outer cobs get" When I measure the difference in case temp, its a couple degrees more, negligible & and fair trade off for more even spread. IMO.

In some areas of the garden, my outer cobs run slightly cooler due to adjacent oscillating fans blasting the edges of the heatsinks.

Click to expand...