Introducing CobKits.com - specializing in DIY and Citizen COBs

Abiqua

Abiqua

Well-Known Member
CobKits said:
I usually just go by manufacturers data or estimate temp by back calculating voltage/lumen droop

any recs on good decent type J or K thermocouples to solder to boards?
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Omega K's are nice but a lil spendy, but available in 25 foot lengths too....
 
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mx5spd

Well-Known Member
Wow you guys are fast, paint not even dry on my new cabinet and I been working it like a MoFo. I am confused only ordered three COBs invoice says backordered but there are three in the Package.
 
CobKits

CobKits

Well-Known Member
mx5spd said:
Wow you guys are fast, paint not even dry on my new cabinet and I been working it like a MoFo. I am confused only ordered three COBs invoice says backordered but there are three in the Package.
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they came in the next day.....they were in fact backordered when you placed the order
 
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mx5spd

Well-Known Member
I hate to ask but having problems deciding which driver to get. (3) of the 1212s want to run at about 1050ma but want option to boost or dial back a bit. Which one would be the best value? THX
 
CobKits

CobKits

Well-Known Member
HLG-120H-48A will only run them at about 970 mA tops
HLG-185H-48A will do 1400 each and you can dim down to about 600 mA

i dont really have anything else on the site that is in that size range. next step up is 240W series which is more than twice as big as you need
 
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camdengolf

Well-Known Member
Im also very interested in the new light engine you are offering and the space that it would be optimal for. Need to buy more lights soon for my tester project as my plants get bigger. And which driver would be the best? seen the 320 mentioned to run 2 of the clu058-3618's possibly?
 
Millsie

Millsie

Well-Known Member
CobKits said:
at 150W the 1825 is a better fit cost and driver voltage wise

320h-1400b runs 2 easy peasy
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320h-2800c would run two 1825's perfectly, which is what I'm currently working on, @160w~ each it's as bright as the fucking sun though! Ahahahhahaahah
 
Millsie

Millsie

Well-Known Member
CobKits said:
oops youre right, i meant 2800. corrected. the 1400 would run 2 3618s (100V chips)
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Have you lit two 1825's at that amperage before?
Trying to decide it it's too much light for a 3x3 or 4x4, was almost thinking of putting 4 1825's 640w max - 400w ish min?
 
CobKits

CobKits

Well-Known Member
Millsie said:
Have you lit two 1825's at that amperage before?
Trying to decide it it's too much light for a 3x3 or 4x4, was almost thinking of putting 4 1825's 640w max - 400w ish min?
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4 of those cover a space well and yes dimming is afine- you can always crank them up later - who isnt constantly changing their setups? the extra horsepower on tap will come in handy someday.

for a 4x4 budget 40W/SF max, 640W sounds perfect and you'll be dimming

in a 3x3 you want maybe 75-80W max per cob (at 4 cobs) and passive 140/80s become attractive
 
Rocket Soul

Rocket Soul

Well-Known Member
Millsie said:
Have you lit two 1825's at that amperage before?
Trying to decide it it's too much light for a 3x3 or 4x4, was almost thinking of putting 4 1825's 640w max - 400w ish min?
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CobKits said:
i put up a 3x3 to test but then it got filled :mrgreen:

so ill have to put up another
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Still waiting eagerly for those 3618 spread tests. Would you consider doing it in a 4x4, hanging a bit higher than 12'? So as to get an idea to how they would work in a large open canopy with several lights? The drivers we are working with should work real neat for 3618 ;)

Also very happy to say that spanish customs look about ready to release my 1825s after almost a month of fuckin around:wall:
@Millsie looking at running them around 160w each, just like u, but on hlg185 48A. I think these drivers are going out of production but i really like them for a paralell conection prohect further down the road.
 
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iLikeDIY

Member
Have any of you tried to remove a wire from a BJB holder before? I seen an illustration that you are supposed to poke something in to release wire but I can't seem to get the sucker out.
 
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