Introducing CobKits.com - specializing in DIY and Citizen COBs

CobKits

CobKits

Well-Known Member
the single-cob fixtures were often requested - so i modified my latest batch of heatsinks to have the proper thru holes - as well as multiple chip mounting options. im going to send some of these multi-cob fixtures off for full photometric testing


assembly3.jpgassembly2.jpgassembly1.jpgmulticob2.jpgmulticob1.jpg

some of the options will include
HBG60-1400 w/ citi 1212 gen 6: $85 assembled / $65 kit
HBG60-1050 w/ Luminus CXM22 gen4: $115 assembled / $95 kit
HBG100-36A w 4x citi 1212 :$115 assembled / $85 kit
HBG100-60A w 4x luminus CXM22 gen4: $160 assembled / $130 kit
 
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CobKits

CobKits

Well-Known Member
closeout on last of the gen 5 citis (1212 2700K) $5

closeout: Citizen CLU048-1212 2700k 90CRI GEN5 – CobKits.com

cobkits.com cobkits.com

closeout 1818 2700K gen 5 (both 80 and 90 cri) - $10
all 1818 gen 6 on sale for $18

Citizen CLU048-1818 80CRI (choice of color temps) – CobKits.com

cobkits.com cobkits.com

Citizen CLU048-1818 90CRI (choice of color temps) – CobKits.com

cobkits.com cobkits.com

1212 gen 6 citi on sale as low as $7 in singles, $6 in 30 packs

Citizen CLU048-1212 80CRI GEN6 – CobKits.com

cobkits.com cobkits.com

Citizen CLU048-1212 90CRI GEN6 – CobKits.com

cobkits.com cobkits.com

1212 gen 6 citi on sale for $6 in 30 packs

Citizen CLU048-1212 80CRI GEN6 – 30 pack – CobKits.com

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Citizen CLU048-1212 90CRI GEN6 – 30 pack – CobKits.com

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CobKits

CobKits

Well-Known Member
yeah i built myself some awhile back. with the 50mm fan that can mount to those heatsinks (just needs run with a tap), ive run em at 150W per heatsink. heatsink gets pretty warm but with the 4 cobs spread out it maintains decent efficiency

im looking forward to getting some photometrics on those. back when i originally tested some cobs vs QBs, 3 1212s were matching the first gen boards in ppfd/W in my basic tests. so that 4 cob setup is an elegant fixture that should match current boards, and the luminus 4 cob rig should be pretty off the charts

glad to be back on RIU, i kinda fell off the map for awhile after the accident, took a while to get back to a-game. was able to maintain everything but not really innovate in the way i would like. i guess i should count my blessings. after this crazy recent deal, it looks like a lot of small businesses are not coming back at all. Grateful for all i have <3
 
pop22

pop22

Well-Known Member
Wow! Glad your ok! Yours is one of the few threads I watch here. its nice to communicate in a thread that is civil!

And I still have a couple if active heatsinks with citi 1825s i got from you. They get moved around to fill in as needed and have been great lights.


CobKits said:
yeah i built myself some awhile back. with the 50mm fan that can mount to those heatsinks (just needs run with a tap), ive run em at 150W per heatsink. heatsink gets pretty warm but with the 4 cobs spread out it maintains decent efficiency

im looking forward to getting some photometrics on those. back when i originally tested some cobs vs QBs, 3 1212s were matching the first gen boards in ppfd/W in my basic tests. so that 4 cob setup is an elegant fixture that should match current boards, and the luminus 4 cob rig should be pretty off the charts

glad to be back on RIU, i kinda fell off the map for awhile after the accident, took a while to get back to a-game. was able to maintain everything but not really innovate in the way i would like. i guess i should count my blessings. after this crazy recent deal, it looks like a lot of small businesses are not coming back at all. Grateful for all i have <3
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CobKits

CobKits

Well-Known Member
just a heads up the bitcoin payment gateway on the site is temporarily disabled, if you want to purchase using bitcoin, email me for wallet address

also USPS shipping is currently suspended to many foreign countries! please check your country here first before ordering!

International Service Alerts - Newsroom - About.usps.com

Information about disruptions that may affect service for customers shipping internationally.
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pop22

pop22

Well-Known Member
@CobKits I have a Citi 1825 based light that's 4.5 years old. Should I replace the cobs? How much degradation has likely occured ? i'm wondering, if witha little drill work and a tap, I could mount a pair of CMX22 on my heatsinks.
 

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Humple

Humple

Well-Known Member
pop22 said:
@CobKits I have a Citi 1825 based light that's 4.5 years old. Should I replace the cobs? How much degradation has likely occured ? i'm wondering, if witha little drill work and a tap, I could mount a pair of CMX22 on my heatsinks.
Click to expand...
What are you running those Citis at, Pop? And are there four of them?
 
N

ndawg420

Active Member
So not really sure Im adding much, but just wanted to say thanks to cobkits. I was figuring out my led rig for my cabinet, originally not understanding how shit these Amazon AC COB's were until I came across a post by cobkits. I had a single unit I was playing with and couldnt figure out why I was getting so much heat lol. Thanks to his site I was able to build a both cost and power efficient rig with CLU048-1212's and meanwell drivers. Just a big thanks for getting me the right gear all in one place.
 

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CobKits

CobKits

Well-Known Member
1825s are pretty good in terms of efficiency, esp at 75W. i still have a tent on those

thats kinda the problem of the larger cobs, they are not as standard, where the 28mm cobs are all bolt-in replacement

cxm32s are the same size and voltage as your cobs. ive been leery to stock those as the larger cobs simply dont sell as well, and theri advantages over a cxm22 at the wattages we normally run dont really justify the price difference, imo
 
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