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Even if the vero29 is not the hottest cob out now, you can mount thos really easily using thermal glue. I used thermal glue for two of my vero29 and pico ez-mate connectors. So that made it solder free, and i didn't need any drill or tapping tools. The downside here is that if you want to remove...

If i could afford it, i would have tried to get you to build me a lamp SDS. Your work is not DIY, it is custom design work, not just something off the shelf. Proffessional in every aspect.

The leds draw different amounts of voltage when they have different temperature. But the current stays the same throughout, that is why you want constant current drivers. So you do not need to do anything to the drivers to get them to deliver the right amount of voltage.

1750 is not a problem at all as long as you have a decent size heatsink. Stardustsailor had his at either 1950 or 2100 in one of his builds ("thinking of a new light" is the name of the thread).

The shipping is the reason that one might be worthwile for me. I alreadu have some artic alpine 11's running 4x cxa3070 z2, but i somehow managed to break two of them, so i will be replacing them with vero's, as they are cheaper. But with the tools i have available using two large heatsinks...

I found this heatsink on ebay http://www.ebay.com/itm/Large-Aluminium-Heat-Sink-Power-Amplifier-Power-Supply-Transistor-IC-FET-PA-/180790819341?pt=LH_DefaultDomain_3&hash=item2a17f8fa0d And i am wondering if it is large enough to use with 2x vero 29 or 2x cxa3070 @1400mA? I have some 120 or...

The kessil might also be worth a look. But both the hans and the a51 are quality lights.

For that space i think the led is to powerful. The best light/cost for that space imho would be to do some diy led's. Two CREE cxa3070 @ 1400 mA would put you at ~66w/sqft. In the LED forum the standard reccommendation is 30-50w/sqft. This would also run cooler than the mars hydro, so less need...

You need to run them in parallel. Then you add the amperes to get the total drawn from the psu. And if you have the heatsinks go for it, I just suggested active cooling because of cost...

I hang mine at a 25cm distance, but i have 4 @ 1400mA for 75x75cm. And when i have them closer i get some slight light burn.But you can try at 15-20, and if you get burn you can raise them higher. For passive cooling you need ALOT bigger heatsinks, and if you do not have a good place to get them...

I think the setup you have going for flower is pretty much perfect. It will give you a very efficient setup, and since you have two lights you can get a very even spread. I would not go with the 3590 because it is overall more expensive, the led's are more expensive and the drivers are more...

I have gotten some white tips on some of the top leaves on one of my two plants, and because i am a complete novice i am not sure if i am seeing early stages of nute burn, or if it is bleaching from the lights. So if someone here could be so kind to take a look and give me an expert opinion that...

30-50 W/square foot is the reccommended amount. So for 16sqft i would use a minimum of 10 cxa3070 @ 1400mA for a total of 520watts, or 32,5 watt/sqft. Other configurations are also possible, but i would personally not go above 1400mA unless you have dimmable drivers, and those are quite a bit...

This is one of SupraSPL's spreadsheets and it shows the lumen output of the cxa3070 AB bin at different currents (lm50c), i think these numbers are taken from some documentation posted by cree, but i am not sure about that. Maybe supra or one of the other users here can answer that one. As far...

Are you talking about the cxa3590 or the cxa3070 here? because the Meanwell LPC-60-1400 has a Vf range of 9-42V, and that is well within the range of the cxa3070. I am currently running 4x CXA3070 @ 1400mA in a 2,4x2,4 tent, and even with my very limited growing skills, the growth i have is very...

Do you know the voltage range for that driver? I bought the meanwell lpc-60-1400. I also bought them from eBay, but they are a little more expensive. And 1,5 amp will give a little over 50 watt per led

If you know what model cpu the coolers were used with you can look up the TDP. But for 50-60 watt I think all of them will do the trick. I am using an old cooler for a Amd 940 cpu, and it runs cool to the touch with 21-22 Celsius ambient temp. Running at 1400ma or 52w.

Yes I do :). English is not my first language, so if something is unclear just let me know.

the drivers are the powersource, you need to hook them up to 110/220v. What i did was cut an old lead of an old computer, and use wago 222 connectors to connect the wires from the driver to the wires from the computer plug. And then i can plug that into a wall socket. The wire from my drivers...

Running five will probably give you amazing results, and it should provide a good lightspread. And if you feel the need you can always buy more leds and add later. Also if you need a driver for the CXA3070 i use the meanwell LPC-60-1400 from meanwell, which you can get at a decent price. This...