CXB3590 versus Quantum Boards
- Thread starter newguy41410
- Start date
cevat_kelle
Active Member
He tested over 27 lights. The CFLs is just for comparison/reference. The video is was really interesting for me.
CobKits
Well-Known Member
ok i gave it a shot.
good info esp discounting everything below the common cheap 600 SE. so many expensive LEDs right around there!
im leery at drawing conclusions from his data as he doesnt qualify the measurement technique. he specifically mentions the QB120 was measured in a 2x2 tent - obviously different techniques are going to give wildly different results for different lights. Measurement environment and technique is easy to standardize and should be the basis of control for a test suite. space size matters little if he really is taking 64 par measurements and averaging them - the lower wattage lights will self-normalize with their lower input wattage
good info esp discounting everything below the common cheap 600 SE. so many expensive LEDs right around there!
im leery at drawing conclusions from his data as he doesnt qualify the measurement technique. he specifically mentions the QB120 was measured in a 2x2 tent - obviously different techniques are going to give wildly different results for different lights. Measurement environment and technique is easy to standardize and should be the basis of control for a test suite. space size matters little if he really is taking 64 par measurements and averaging them - the lower wattage lights will self-normalize with their lower input wattage
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Yodaweed
Well-Known Member
I'm pulling weight from my HID lights, i wouldn't up my yield switching to LEDs i am maxed out for light in my area the only thing i could benefit is from electrical savings which would be tiny since i have one of the lowest cost electrics in the country. Really LEDs are for people with high electric costs(not colorado people electric is dirt cheap here) . The main thing i would think LEDs help is not having to replace bulbs once a year, if you are using high priced bulbs i could see the trade off in a few years you might break even (bulbs are about 30-85$ a pop if you need an additional 1000$ to replace each fixture it will take several years of bulb replacement and energy savings to even come close to repaying your initial investment. )
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cevat_kelle
Active Member
Hi CobKits. Thanks for your reply. Yes you are right, since there are some faults in his measurement method, i am also investigating deeper into the specs of different led lights. What i have found so far is that the Quantum Boards V2 (with lm301b) are the most value per money and watt and even spread of the emmitted light compared to one big COB leds, which are emmiting the light form a one punctual source.
cevat_kelle
Active Member
CobKits
Well-Known Member
not actual Quantum Boards though. you can save some money by buying knockoffs but there is no guarantee of the spec you will get
cevat_kelle
Active Member
There are companies which are more than 5 years on Alibaba and have good apprisal. Me myself have never bought led lights on Alibaba. So i dont have any experience though. But on the otherside, i cant believe that these companies could afford bad products or service.
Yodaweed
Well-Known Member
You can get the exact same equipment from alibaba that you use
If anything they are getting it much more direct from the manufacturer since samsung is a Chinese company and you import their diodes just like alibaba suppliers do.
Yodaweed
Well-Known Member
That's wrong buddy, heat is based off watts used, intensity is what makes you not be able to put a plant too close to a powerful light, you can bleach your plant. With proper AIR CONDITIONING yes i said it A/C , you should be able to cool any lighting source. And you will need AC if you have LEDs too, 1000w of LED produces the same heat load as 1000w hps does only differences is the way the heat is dispersed , LEDs blow heat out their heat sinks, hps radiates heat from the lamp and ballast.You can buy directliy by different manufacturers on Alibaba, and you can save up to 50%. I recommend 2x QB with 320W for a 4x4 tent.
@Yodaweed dont forget the heat factor. You can bring LED lights closer to the canopy compared to HPS lights
cevat_kelle
Active Member
u r right but u can put them closer than hps lamps, or? Lightburning is a fragile subject, i know.
Yodaweed
Well-Known Member
My cxb3590's will bleach my plant if they are too close (really strong hot spots) ~3-4 inches or less , i can get my 600w hps to touch the glass and it doesnt burn or bleach
Psyphish
Well-Known Member
Samsung is a korean company.
CobKits
Well-Known Member
some of them might have products equal to or better than QBs. but that still doesnt make them QBs. you roll the dice
Yodaweed
Well-Known Member
Samsung Electronics is currently manufacturing 50 percent of its mobile phones inVietnam and only 8 percent in Korea. At present, Samsung Electronics is running six mobile phone manufacturing facilities in the six countries of Vietnam, China, India,Brazil, Indonesia, and Korea.Jan 28, 2015
www.businesskorea.co.kr/news/articleView.html?idxno=8785
Psyphish
Well-Known Member
Still, calling them Chinese isn't exactly accurate. Might as well say "oriental" then.