Cob Swap on a Bloom Beast c525

C

Cannaburter

Member
Good day,

The story: I got a steal on a bloombeast c525 light (less than 70 brand new shipping included). So I liked the features and cost, but not the spectrum necessarily. There are 2 "100w red" COBs and 2 "100w full spec. (Blurple)" COBs I am looking at swapping 2(for sure perhaps all) of the COBS for some Citizen CLU048-1212 90 CRI COB.

I know that I should just go with the DIY route, but this was a steal that allows me to piggy back and reverse engineer.

My question is: if I was to have to replace the COBs, should I replace the reds or the blurple COBs? (Assuming that I do not do them all. Initially I thought I would swap the "Full spect." with 3500k 90CRI COB, but they have IR and UV built in (probably negligible tbh) so I do not know which route to go. Could you give me 2 choices?
1. If I must give up 2 should it be the red or the full spectrum?
2. If I give up all 4 which color temp combos should I do?

Does @CobKits. @Lovetomatoes @Rocket Soul Have any tips?
Thank you,
Cannaburter
 
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Rocket Soul

Rocket Soul

Well-Known Member
Take some pics of the drivers, any info of dc volts and amps, without this info it's not possible to figure out.
Also, it's very likely you'd have to change out all the 4 of them, unless it's a uncommon driver setup.
 
C

Cannaburter

Member
Just got it in. Let me check the drivers. There are 3 separate drivers 1 for seedling (smd 5w chips.) 1 for veg "full spectrum 100w cob" and 1 for bloom (red COB) i will replace the drives as needed, I am looking for the best spectrum possible on a citizen clu 048 1212 budget lol.

By the way thank you for chiming in! You are dope!
 
L

loco41

Well-Known Member
Rocket Soul said:
Voltage isn't right for clu1212. You'd need a cob with voltage between 60-80V for these drivers. For example vero29 C version (70ish volts) but they are somewhat more expensive
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What do you think about him running two 36+/- volt cobs in series per driver? It seems like that could open up some more possibilities if he went that route, just curious on your opinion doing that with these specific drivers.

Cannaburter said:
Hopefully this will help a bit. Thanks again!
Click to expand...
I took apart a kind led that I got for free on a shipping mistake and ended up with probably similar components to you as well. I never set anything up permanently, but tested and tried a few things to help me better understand the whole diy stuff. I am far from an expert, but I enjoy thinking about the possibilities with that stuff as well.

Are you planning on just swapping some cobs back into the original unit? If so, maybe look at something like the bridgelux thrive series for a high cri spectrum.

Something like these might be of interest for you https://www.digikey.com/en/products/detail/BXRE-35S2001-C-73/976-BXRE-35S2001-C-73-ND/11203650?utm_campaign=buynow&utm_medium=aggregator&curr=usd&utm_source=octopart and the price isn't too bad either. If @Rocket Soul gives the thumbs up for wiring 2 cobs in series per driver, they would fit well and be just a bit over there nominal current. Would need some kind of heatsink though, but did yours come with any heatsink for you to attach the cobs to?

Sorry no expert on any of this, just my two cents on it all.
 
Rocket Soul

Rocket Soul

Well-Known Member
loco41 said:
What do you think about him running two 36+/- volt cobs in series per driver? It seems like that could open up some more possibilities if he went that route, just curious on your opinion doing that with these specific drivers.



I took apart a kind led that I got for free on a shipping mistake and ended up with probably similar components to you as well. I never set anything up permanently, but tested and tried a few things to help me better understand the whole diy stuff. I am far from an expert, but I enjoy thinking about the possibilities with that stuff as well.

Are you planning on just swapping some cobs back into the original unit? If so, maybe look at something like the bridgelux thrive series for a high cri spectrum.

Something like these might be of interest for you https://www.digikey.com/en/products/detail/BXRE-35S2001-C-73/976-BXRE-35S2001-C-73-ND/11203650?utm_campaign=buynow&utm_medium=aggregator&curr=usd&utm_source=octopart and the price isn't too bad either. If @Rocket Soul gives the thumbs up for wiring 2 cobs in series per driver, they would fit well and be just a bit over there nominal current. Would need some kind of heatsink though, but did yours come with any heatsink for you to attach the cobs to?

Sorry no expert on any of this, just my two cents on it all.
Click to expand...
Yes, you could do 2 x36V cobs on that driver but they would run at 25w each, approx. I don't know how that would work out with heat sinks though. Tbh I think getting neww cobs on those old drivers might be a stretch, there aren't any decent and economic cobs available for that voltage.

Op: are all the drivers the same? Same writing?
 
C

Cannaburter

Member
All the same (except for the fan driver). I went ahead and ordered the Vero 29s, and if I have to replace the driver that is fine too, but the 3000k Veros have to be more penetrating than the red only cobs, even at about 45 watts. Right?
 
Rocket Soul

Rocket Soul

Well-Known Member
I'd rec thinking and doing numbers before getting your gear, it might be that there are better options than retro fitting your light for the same amount of cash.
If you're going to change the drivers any way you could just go for your original plan of clu1212
 
C

Cannaburter

Member
You guys are great, I have a few cheapo boards I have made using ebay heatsinks and optics, work okay, but look like crap. This thing was built surprisingly well ,mechanically speaking, and provides me with a few decent heatsinks and a fairly decent spread. For me it is the aesthetics of it all. For simplicity I would just throw a little thermal paste, torque down a cob to some PC water coolers I have laying around, match the driver, and be off to the races. I guess my thought is this, find the best spectrum and cob combo configuration ,(which you guys are helping me tremendously with I may add. I always thought RIU was full off grumpy confrontational tokers). The Diodes in the middle are decent little 5w chips, but could be 10w given the cooling and space allotted, and I may find this thing making some some pretty cool lights. Hell 60+- bucks and free shipping, from what I can see the heatsinks and lenses alone blow through that ceiling. That is, unless you guys know of some top secret place to buy LED components without having my wallet crushed into oblivion. Seriously, all of this advice is appreciated, now I go back to being a fly on the wall and soaking in knowledge.
 
C

Cannaburter

Member
Rocket Soul said:
Fitting them on the sink was my concern as I haven't seen pics of it.
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i

Oh dukes! I am sorry about that. Next time I have it apart, I will get a legit pic of the inside. The center diodes are on a regular aluminum panel type heatsink. The cobs are on a 4"(4.5"?) inch fin aluminum heatsink about .5" in thickness, spanning the width of the housing with 2 cobs attached per side. See poor illustration! Hahaha
 

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