Luminus CXM-32 Gen3 the next big thing??
- Thread starter bassman999
- Start date
Silver or lead
Well-Known Member
I guess they may be but I don't know. I also don't have a computer hooked up to the net so I don't get to play with the fancy spreadsheets and calculators to find out myself.
A hortilux bulb is ~145lm/w, I'm running 1212s a 25w which from what I have read is about 160lm/w but go down in efficiency with more watts fairly quickly from what I've seen in the posted charts.
I just want to make sure I'm beating that hortilux because if you are not doing that then cobs lose a lot of their advantages IMHO.
bassman999
Well-Known Member
Other advantage with cobs is even light spread, and no need to be 3ft above plants etc...
Not to mention that HPS has more green and that spectrum is counting toward their 145 lm/w and its not doing much good, so if that was subtracted from the equation I think they wouldnt look as good on paper.
I borrowed this from Cobkits site
3000K is 149 lm/w @35 or so watts 160 lm/w at 25 watts seems easily achievable
Also those measurements are at 85*C so with lower temps you will be even brighter.
I run passive and keep around 30*C with ambient of 75-79*F
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CobKits
Well-Known Member
you bet. i did the same setup with 4 1825s in a 3x3 and it rocked. the cxm22s actually run a slightly higher voltage and fill out the driver better. a CXM22 rig vs that 1825 rig would put out about the same PAR (ever so slightly higher actually) and use a scant 8W more (73W per cob vs 71). not a bad deal to save $100 on the 4 chips and have better reflector options
CobKits
Well-Known Member
its all about the spectrum. good blurples are equal to hps on actual usable par but look like crap on lumens.
hps has a ton of yellow which is good but not as good as strong red and blue like a warm white phosphor cob
Silver or lead
Well-Known Member
You two are selling ice to an Eskimo, lol, an educated guess would have been good enough.
muleface
Well-Known Member
So i'm building out the 2nd half of my grow tent. I already have 8 cobs running at 80 watts each on one side. I'm thinking about getting 4 of the CXM-32s. Then spreading out the existing 8 lights so there are 12 cobs total in a 4x8 space. currently i have 4 3000k and 4 4000k, any thoughts on what color i should get? I thought maybe 5000k and spread the spectrum around a bit. That would get me around 480 watts per side.
thoughts?
thoughts?
muleface
Well-Known Member
i thought i saw them on digikey in the 4k and 5k
http://www.digikey.com/product-search/en/optoelectronics/led-lighting-cobs-engines-modules/525140?k=&pkeyword=&s=51252&FV=fff40008,fff80354,fffc04be&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
http://www.luminus.com/products/Luminus_XnovaCXM32-GEN3_Datasheet.pdf
but these may not be gen 3
EDIT
Yeah, i think you are right, it looks like they don't have gen 3 in stock at all
http://www.digikey.com/product-search/en/optoelectronics/led-lighting-cobs-engines-modules/525140?k=&pkeyword=&s=51252&FV=fff40008,fff80354,fffc04be&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25
http://www.luminus.com/products/Luminus_XnovaCXM32-GEN3_Datasheet.pdf
but these may not be gen 3
EDIT
Yeah, i think you are right, it looks like they don't have gen 3 in stock at all
Chronikool
Well-Known Member
oh really..? Lovely! How was your yield? Scrog? Number of plantz..? Thanks
CobKits
Well-Known Member
cxm22 uses the same ideal 2204ct and same bjb holders as clu048 - both are solderless. the only light engines i solder on are clu058
CobKits
Well-Known Member
that was 9 in a 3x3 from day 0-14 which then got moved to fill out the 1/2 a 5x9 w 9 cobs that i showed youoh really..? Lovely! How was your yield? Scrog? Number of plantz..? Thanks
Chronikool
Well-Known Member
So the reflectors on your site will fit on the cxm22 aswell..?
Warpedpassage
Well-Known Member
Howdy cobkkits,
Do u think the 1825s running at 50 watts will give higher efficiency than the cxm22s(more usable photons than heat per watt)? If so, by how much? Im not particulary concerned with cost, its going to be utilized for a small personal grow, only 300 watts. Im planning on grabbing the engines from you in a few weeks.
Many thanks.
Do u think the 1825s running at 50 watts will give higher efficiency than the cxm22s(more usable photons than heat per watt)? If so, by how much? Im not particulary concerned with cost, its going to be utilized for a small personal grow, only 300 watts. Im planning on grabbing the engines from you in a few weeks.
Many thanks.
CobKits
Well-Known Member
Warpedpassage
Well-Known Member
Glad i asked. Cobby, last question, how do you feel abut lenses with the cxm22s? apologies if this has been covered elsewhere.
bassman999
Well-Known Member
What wattage were they calculated at?