Luminus CXM-32 Gen3 the next big thing??

CobKits

CobKits

Well-Known Member
OpenCannaWorms said:
3s and 6s are kind of weird amounts Imo. The goal is eventually to have a chip per square foot of a 4x4. With that said, if I could find a driver that would run 2-4 chips at 80-100w and just add in the extra chips when I get them to drop it down to 40-50w per chip that would be perfect.
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185-48A, 320-48A good for that
 
B

BloodKil

Member
CobKits said:
i think you mean the constant current drivers. the constant voltage can run anywhere from 2 to 20+cobs
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Can you help out my understanding a bit CK? (planning an order soon but hung up on a few things including a driver search that has had me chasing stats left and right for a handful of different ones now)

First off been reading a week or so now, and have switched my build plans/design (cob wise) 3 times but think im finally settled into 12 CXM-22 (8 @ 80 cri and 4 @ 90) but driver options are making it hazy...

I started looking into the HLG-320H-C1050 (x2) but it looks as if it will slightly over amp/volt the drivers rated specs (so close though)

From there i looked into the 600H-54b and while it may seem to be the best fit atm, I worry a bit about putting all on one driver (if driver goes bad then entire unit is down) as well as lack of independent "zone control" lighting that could be used with multiple drivers (without over amping to cobs)

after looking a couple more places (including the HLG-185-48b you had responded to above and is said to work by at least one other person in thread...)

more to the point of the questions...

1. Can the HLG-185H-48B run 4 CXM-22 (or even a single one for that matter *over amperage aside*) given the fact it only has a max voltage range of 48? (some have said it does but i cant wrap my head around the v drop as it shouldn't be able to push the 50v chips unless im misunderstanding something)

2. would the HLG-320H-C1050 in your opinion squeek by or do you know of anyone who has tried it (there seemed to be some debate in this thread about it)

3.If no to the above questions, do you have a suggestion for the best driver to run (4)CMX-22 @ ~1a +/- 100ma) without a ton of room left on driver?

4. any knowledge you can drop on what size fuse/resistors if I have to go parallel route with one of these drivers (still looking into this info, and will research more once driver is locked, but would gladly take a link or some quick info if you happen to know of a great thread/graphic that would help in the search.


Thanks in advance for any help you or anyone else can be in these... Still reading, and will continue to do so, just getting confused on a bit of the above.
 
CobKits

CobKits

Well-Known Member
BloodKil said:
1. Can the HLG-185H-48B run 4 CXM-22 (or even a single one for that matter *over amperage aside*) given the fact it only has a max voltage range of 48? (some have said it does but i cant wrap my head around the v drop as it shouldn't be able to push the 50v chips unless im misunderstanding something)
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48B not really a good fit. the cxm crosses 48V at about 250 mA. youd want a 48A or 54B to operate in the usual 49-53V range

BloodKil said:
2. would the HLG-320H-C1050 in your opinion squeek by or do you know of anyone who has tried it (there seemed to be some debate in this thread about it)
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it will work. at worst it will limit your cobs to 900-1000 mA
definitely use ideal holders (or solder), not bjb, as youre over 300V. ideals are only rated for 250V but should be fine (only the first holder sees that voltage. as long as your heatsink is grounded and you use a meanwell hlg with the overcurrent protection you should be OK

BloodKil said:
3.If no to the above questions, do you have a suggestion for the best driver to run (4)CMX-22 @ ~1a +/- 100ma) without a ton of room left on driver?
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the 320H-C1050B is not a bad choice and should run right about 1000 mA
320H-54B would be 1000-1100 mA each
320H-48A would be 1250 mA each

BloodKil said:
4. any knowledge you can drop on what size fuse/resistors if I have to go parallel route with one of these drivers (still looking into this info, and will research more once driver is locked, but would gladly take a link or some quick info if you happen to know of a great thread/graphic that would help in the search.
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no need for these at all. neither the 48A or 54B can go over 54V in any circumstance which is about 100W/ cob
 
O

OpenCannaWorms

Member
So I have been trying to work out spacing and the likes. I know 1 cob per square foot is the typical spacing. I don't have enough cash currently to buy 16 per 4x4 (I'm running a 4x12). I also know it's recommended to have 40 watts per square foot. Due to cobkits suggestions I'm planning to go with CXM22s. I say all that to say this. Can I run 9 around 70w each and still get decent efficiency? Each chip would be 12 inches apart and the fixtures would be 6 inches from either wall of the tent.
 
Chronikool

Chronikool

Well-Known Member
OpenCannaWorms said:
So I have been trying to work out spacing and the likes. I know 1 cob per square foot is the typical spacing. I don't have enough cash currently to buy 16 per 4x4 (I'm running a 4x12). I also know it's recommended to have 40 watts per square foot. Due to cobkits suggestions I'm planning to go with CXM22s. I say all that to say this. Can I run 9 around 70w each and still get decent efficiency? Each chip would be 12 inches apart and the fixtures would be 6 inches from either wall of the tent.
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I run mine at 80w (4 x cxm22) in a 2.8 foot x 2.8 tent. I guess thatz running them hard....but it workz. I love em. So get amongst it :)
 
CobKits

CobKits

Well-Known Member
OpenCannaWorms said:
Can I run 9 around 70w each and still get decent efficiency? Each chip would be 12 inches apart and the fixtures would be 6 inches from either wall of the tent.
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easy peasy. cxm22 at 70W are about as efficient as a cxb3590 at 55W which is a pretty popular setup. just remember you got a little extra heat load per chip so 133mm heatsinks or better. any grow benefits from good airflow, both girls and chips
 
K

Krynn

Well-Known Member
Hi! I'm making a light for a 1,2meters x 1,2m.

I'm thinking in 3 bars with 4 cxm at 50w each cxm-22. So in total 12 cxm-22 and 600w.

Is that a great config? Or can do any better config? And what would be the great distance from cobs to wall? And from cob to cob?

Thanks
 
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CobKits

CobKits

Well-Known Member
if you want one driver per bar the hlg185-48A is hard to beat. if you need remote dimming (which allows you to dim from a dial you can put anywhere (as opposed to using screws on the driver), hlg-240h-54b. the b-drivers will also let you dim all bars at once with one dial.

beleive it or not the hlg-240 doesnt really have much more usable power than the hlg185-48A. the 48A are at the perfect sweetspot for maximizing driver utility and you can get 220-225W out of them, but only 240-250W out of the more expensive 240-54B

the 240 is a little bigger and prob runs a little cooler which could be important if you want your driver to last 20 years instead of 15 (thats just me talking out my ass tho, nothing to back that up other than cooler operating temps favor equipment longevity- in my experience all meanwells are insanely over built which is great for us)
 
CobKits

CobKits

Well-Known Member
the choice of cob wouldnt make a difference with your target par range. could be anywhere from 400-1200+ ppfd depending on whats going on in your garden
 
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EfficientWatt

EfficientWatt

Well-Known Member
Hi,

Been away for a year, looking for the most efficient cob above 50W ; say 60~120W range.

Last builds were 1825 gen6 80cri, and was about to get some 90cri to compare ... but I came accross the CXM32.

Can't find much a part from this thread.

@CobKits : Did you ever publish test of cxm32 ad 1825 gen6 ?

Do we have a confirmed SPD ?

I'm surprised no one seems to using these cxm32 ... can't find a grow with them
 
CobKits

CobKits

Well-Known Member
never tested them. just the cxm22 and the cxm27

im not a big fan of the big LES cobs for our application
 
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