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kansabis
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Talk to sixstring he knows his shiz.
best thing to do and easiest i think,is build the frame that you want in the tent,design wise,then take each one and flip light on were you think you want it and follow the foot print of light to decide rather a side foot print or what not if you dig,thats what i did with my lights,just turned on one at a time,im in a 2x4x5 which is much smaller,but plant were 18in tallin the pot,then add pot height,and figure 18 in from canopy,that were i switched lights on and off for max coverage,led isnt like the hid ,it shoots straight down,and leaves me with one void in middle however i do it,but still gets the overlap,i also temp my tent from that hot spot,you dig what i mean
well the reason i say this,is them damn hangers for the lights,i cant keep these bitchs straight for shit,so i figured id throw a few spacer between the lights and plywood for now,were the heat and fans still work good but hold all the lights inline and together,im looking at another cheap one fellow on other thread mentioned,said it is a 1k led but in reality only puts out about 230 ,so that explain why im not rocking the tent,i got 2 300 watt full spectrum and if all them are like that them bitchs be blairing about 100 wattsThnx man,might be what I end up having to do...
12 low wattage cobs would kill it in a 4x4.When i was doing all this research before and estimating it all i multiplied the square footage by 35 watts and figured that was a good spot to be on cobs,15 cobs (3 rows of 5 was a cob every square foot.
Than you need to figure out how much to drive the cobs to get to your target wattage cause after all the power company charges you by the watt not by the amp.
Multiply the forward voltage of the cob by the amps on the driver.a 1400mA driver for example will give you 1.4 amps.
the D series Vero is 37.5 volts.Multiply 37.5 X 1.4 and gives you 52 watts per cobb.Multiplied by 5 is 262 per driver or 5 cobs and multiplied by 3 is 786 watts total on my 4x5 which is really perfect.
You can get a 1.7 amp driver and use less cobs and still get the wattage up but the idea here is efficiency.More cobs less wattage means more efficient.Run them on 220 and it drops the amp pull in half so the drivers run cooler.
in a 4x4 i would use 12 D series veros or the cree CXB3590s
You can use the 1400mA 320 driver and run 6 cobs on each driver.
the crees are 36 volts so 36v x 1.4 = 50.4 watts X 6 = 302 watts.The Meanwell 320H 1400 will be the perfect driver.
The veros run a little higher on voltage so you will get a little more wattage out of the vero D series cobs.
spacing is easy just do 3 rows of 4 and be done with it.
would be bright as shit and run super efficient and last 10 plus years.
Heres the 15 cob i built for the 4x5 and this shit owns with 3 240H 1400mA drivers on 240V.
I mounted my drivers in an alumimum frame and its all wired up to harneses that can unhook.The framing was easy to build and the wiring is all soldered together.Easy shit.
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