you should be able to find CXA 3070 for less than $35
Yes, you'll be amazed how much light they can crank out!
Yes, you'll be amazed how much light they can crank out!
How's $26.08 sound for a 3500K ? 3000K, 3500K, 4000K all work well in these lights. Grow tests on other forums show very little difference in growth performance
This is the company I bought from:
http://www.newark.com/cree/cxa3070-0000-000n00z235f/led-hb-white-3500k-7390lm/dp/08X3498
This is the company I bought from:
http://www.newark.com/cree/cxa3070-0000-000n00z235f/led-hb-white-3500k-7390lm/dp/08X3498
- Joined
- Sep 30, 2015
- Messages
- 1,667
- Reputation
- 1,650
- Reaction score
- 7,203
- Points
- 0
- Currently Smoking
- T20 Double Whisky Sour
You want top bin chips as well. To compare Cree chips of different bins.
http://pct.cree.com/dt/index.html
Lumens per watt is a good comparison between the same color, but when choosing 3000k 90cri($10 chips I linked you on cutter) the LER(maximum lumens for the spectrum) is lower(276 to 324). Lm/w divided by this LER is our efficiency %. So a lower lumen per watt may offer a higher umol/j when comparing the 2 spectrum. The top bin 90cri 3000k cxb2530 would be more efficient than bottom bin 3070s.
Comparing say cxa3070 z2 bin(140lm/w) to cxb2530(126lm/w) is actually 43.2% efficiency for the 3070, and 45.6% efficiency for the 2530.
So @A-Train you're wanting to use 2 drivers and fans? I don't know if you figured I'd it the fan output yet, but I'd leave them alone and use the fans. Not sure if something needs to be on that Chanel if you remove the fan. You definitely want 2 x 36v chip on your driver. Series wiring Red to positive, negative of that chip to positive of the second, then negative on the second chip to driver. The same 2 wires that went to the led board for each driver.
Kapton tape and arctic silver 5 works fine but if you're drilling and tapping holes you can grab solder less holders on cutter too. And if you can place the fan directly on the heatsink and have it blowing you get the most efficiency out of your cooling. (Cooler leds are more efficienct)
4 of those leds, 2 drivers, should get you a total ppf output of ~207. I'd guess 1.8-1.9umol/j at the wall.
http://pct.cree.com/dt/index.html
Lumens per watt is a good comparison between the same color, but when choosing 3000k 90cri($10 chips I linked you on cutter) the LER(maximum lumens for the spectrum) is lower(276 to 324). Lm/w divided by this LER is our efficiency %. So a lower lumen per watt may offer a higher umol/j when comparing the 2 spectrum. The top bin 90cri 3000k cxb2530 would be more efficient than bottom bin 3070s.
Comparing say cxa3070 z2 bin(140lm/w) to cxb2530(126lm/w) is actually 43.2% efficiency for the 3070, and 45.6% efficiency for the 2530.
So @A-Train you're wanting to use 2 drivers and fans? I don't know if you figured I'd it the fan output yet, but I'd leave them alone and use the fans. Not sure if something needs to be on that Chanel if you remove the fan. You definitely want 2 x 36v chip on your driver. Series wiring Red to positive, negative of that chip to positive of the second, then negative on the second chip to driver. The same 2 wires that went to the led board for each driver.
Kapton tape and arctic silver 5 works fine but if you're drilling and tapping holes you can grab solder less holders on cutter too. And if you can place the fan directly on the heatsink and have it blowing you get the most efficiency out of your cooling. (Cooler leds are more efficienct)
4 of those leds, 2 drivers, should get you a total ppf output of ~207. I'd guess 1.8-1.9umol/j at the wall.
The problem with this is the top bin 2530 sells for more than double what the mid bin does. With that in mind, you'd be better off going to the 3070. If you have the money to spend, sure, go top bin, but the mid steps are right now, a better buy for the dollar for those with a budget. Everything is a compromise.
- Joined
- Sep 30, 2015
- Messages
- 1,667
- Reputation
- 1,650
- Reaction score
- 7,203
- Points
- 0
- Currently Smoking
- T20 Double Whisky Sour
The top bin 2530 3000k 90cri is only $10.
Well $12 at the exchange rate now.
http://www.cutter.com.au/proddetail.php?prod=cut2827
And I believe your DIY light will show the Platinum the door.......... Several guys with DIY lights hitting damn near 2 gpw. And doing so efficiently!
This is going to be a hard decision... I would like to stay under $150 for chips if possible...
Also I read someone say the holders are not necissary? Will the tape work? I don't want to put in all the work fabrication g them have chips taped to the board that fall off lol...
So @Atulip do you believe 4 top bin 2530 will do the job I'm wanting them to of boosting power for my flowering? Or can I go 6 in line? I think the would be too close and fail easier due to heat I thing yhe 4 is best bet? I need yalls opinion too though
Also I read someone say the holders are not necissary? Will the tape work? I don't want to put in all the work fabrication g them have chips taped to the board that fall off lol...
So @Atulip do you believe 4 top bin 2530 will do the job I'm wanting them to of boosting power for my flowering? Or can I go 6 in line? I think the would be too close and fail easier due to heat I thing yhe 4 is best bet? I need yalls opinion too though
Ahh, I wasn't looking at AU distributors, that is a great price! I'd have gone with them if they'd been available at that price when I built mine.
