churchhaze
Well-Known Member
My question was related to a 20% reduction in output over such a short period of operation (only 60 days). This is hard for me to believe if the array was cooled properly and not driven too hard. I figured they may have damaged their LEDs by misuse. What were these studies? Was it a sales figure for someone selling panels with quality american arrays?
I thought it was implied that they were less efficient by the much lower price. I have no idea what the actual efficiency or spectrum 'quality' is. I'm sure you're right that it's less efficient than cree by far. I'm just scrutinizing the claims. I wouldn't expect CXA like performance from a "chinese" no brand array. but I also fail to see how they'd fall apart that easily if driven at 50% or so rated max current or less, like DIYers tend to.
I thought it was implied that they were less efficient by the much lower price. I have no idea what the actual efficiency or spectrum 'quality' is. I'm sure you're right that it's less efficient than cree by far. I'm just scrutinizing the claims. I wouldn't expect CXA like performance from a "chinese" no brand array. but I also fail to see how they'd fall apart that easily if driven at 50% or so rated max current or less, like DIYers tend to.
They're multi-chips and by design they aren't as efficient as COBs. And remember they need a big heatsink because heat just kills their output. They're bright but aren't all that for flowering from what I've seen. Plus those are probably blue LED with just a yellow phosphor which doesn't produce a very good spectrum but does produce a pretty intense "white". Do you have any data on that chip? You may have to supplement with some red. I could be wrong, but without some kind of data it's a crapshoot whether it will work or not for you. But don't expect CREE like performance from that. At least not this month. Seems CREE and Lextar made a deal that according to some analysts was made so CREE can better compete with Chinese companies and their prices.
http://finance.yahoo.com/news/lextar-cree-inc-announce-led-034500204.html
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