robincnn
Well-Known Member
Citizen CLU048 1812 3500K 90 CRIWhat model COB's were used in that build?
Citizen CLU048 1812 3500K 90 CRIWhat model COB's were used in that build?
Nice Carpet
That's a 3070 holder and adapter right?This 1 hour build took me almost 2 hours.
There is nothing Ideal about those Ideal holders.
Right side you can see Ideal holder for 3590 COB and the Reflector adapter. You can see the + on the holder.
On the left Top. The ideal holder for CLU048 has the +... ok
Left bottom you can see the reflector adapter covers the + on holder and has its own + marking. When i mounted the reflector adapter i did not notice this and + landed on - side.
Had to remove everything and re wire the whole thing all over again.
View attachment 3763132
They are similarThat's a 3070 holder and adapter right?
High cri are photon filters, this has been known for a while....you might have higher output in certain nm's over 626, but your overall photon output is decreased and hence efficient as a direct result....Hey @robincnn there's a new citi cob calc on the cob calc thread. According to the data the 90cri clu058-1825s are around 10% less efficient than the 80cri. What are your thought? Because I have never hoped my eyes were deceiving me so much since I checked my lotto ticket last night.
Oh wow, so ideal makes an entirely different chip lok holder for the citizen line huh? I could tell the reflector adapter was the same though.They are similar
Citizen CLU-048 with Ideal Holder 50-2204CT, reflector adapter 50-2100AN
Cree CXB 3070 with Ideal Holder 50-2234C, reflector adapter 50-2100AN
CRI pushes the main peak up to about 630nm, adds a bit more above 700nm, and reduces the relative amount of green by quite a bit. Basically a bit closer to solar levels of relative blue, green, and red, so not entirely just for people. All decent things for plants, theoretically, not sure how much weed cares.High cri are photon filters, this has been known for a while....you might have higher output in certain nm's over 626, but your overall photon output is decreased and hence efficient as a direct result....
The whole CRI thing makes no sense, we throw away and deem useless other anthropogenic measurements [lumens], CRI is probably even more useless imho...but i digress...should be fun nonetheless.....I like to fuck around with spectrum too, but so far after hundreds of combo's,still haven't seen anything "concrete"
Thanks Abiqua, I guess I missed that lesson, its been a steep learning curve for me. I have been trying to read so much and take so much in. I only just had my head around the cxbs and then the CLU058s were in the lime light. There are many occasions I have felt very stupid and I'm sure there will be more moments to come. Appreciate your comments.High cri are photon filters, this has been known for a while....you might have higher output in certain nm's over 626, but your overall photon output is decreased and hence efficient as a direct result....
The whole CRI thing makes no sense, we throw away and deem useless other anthropogenic measurements [lumens], CRI is probably even more useless imho...but i digress...should be fun nonetheless.....I like to fuck around with spectrum too, but so far after hundreds of combo's,still haven't seen anything "concrete"
Khatod 90 Silicone lens $16*2 =$32
Bridgelux Vero 29 $22*2=$44
Meanwell LPC100-2100 = $35*2= $50
Junction box and glands $10
AC Power wire $1.5
140mmx80mm pin Heatsinks $19*2= $38
Aluminum L channel $10
Total = $185
with Some wagos and screws total ~ $200
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Heatsink center is 55C and heatsink edge near the wire is 50C. Would have been nice if there are a little more clearance between the heatsink and driver wires.
View attachment 3758338 View attachment 3758339 View attachment 3758341
Grounded the frame
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should be 25 instead of 35"Meanwell LPC100-2100 = $35*2= $50" New Math or discount..........lol!
Hlg-320H-C2100b runs 4 cxb's at 75watts ec. And it's $80-$100. Save yourself the clutter of 4 drivers..so one for each chip? I actually like that idea. I realize the plus and minuses of it, I may go that way with one of my lights
You'd think using a graphite pad square that covers the ENTIRE back would be better. Because once you screw it down, it'll clear that hole and give you thermal interface on all points of contact. Even those tiny little edges around the hole. Just need a square that's the citi cobs full length mm X full length mm.GrafTech Graphite thermal pads, get them right the first time. No rework.
I tried to take it off and it is not easy to remove. Tried iso propyl alcohol and still cannot clean the back of cob.
View attachment 3763140
Also these do not cover the cob on corners
View attachment 3763141
Hlg-320H-C2100b runs 4 cxb's at 75watts ec. And it's $80-$100. Save yourself the clutter of 4 drivers..
CRI pushes the main peak up to about 630nm, adds a bit more above 700nm, and reduces the relative amount of green by quite a bit. Basically a bit closer to solar levels of relative blue, green, and red, so not entirely just for people. All decent things for plants, theoretically, not sure how much weed cares.
I am also not sure where 10% less efficient comes from, since I haven't looked at the new software, but that doesn't sound right. 3500K in 80 and 90 CRI should be about equal in number of photons emitted, believe it or not. You can ask master @guod how that works, but presumably energy is lost, but the number of photons remains the same.
Since plants really care about photons, not energy, it seems to work out OK. @nevergoodenuf did a head to head, 90CRI was basically equal for yield and lab r sults, with the only real difference being less popcorn.
I think @robincnn is the only one so far to test 80 vs 90 CRI under a PAR meter, and from memory it was a close contest which ended up being within 5% after adjusting for unmeasured photons above 700nm. So within binning margins, basically. But software, even truncating 400-700nm should have them even closer.
Anyway, food for thought. I don't think green light is evil or anything, but it's unnatural to have a higher amoung relative to red, and if we can push the red up a bit into the sweet spot without losing photons, why not?
GrafTech Graphite thermal pads, get them right the first time. No rework.
I tried to take it off and it is not easy to remove. Tried iso propyl alcohol and still cannot clean the back of cob.
View attachment 3763140
Also these do not cover the cob on corners
View attachment 3763141