Budget 5700k CRI 95 100w COBs [Items in Stock]

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Joshk
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I’m loving the CRI data, but the 5700k color is a bit intense for home use, and a bit yellow for my photo lighting. I would love to play with one though…. hmmm

Joshk
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It would probably make a great worklight. I’ll take one 5700K if I can find a TIR lens for it.

rngwn
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Joshk wrote:
It would probably make a great worklight. I’ll take one 5700K if I can find a TIR lens for it.

20W 30W 50W AC COB LED Lens+Reflector+Silicone Ring Lamp Cover shades 90 Degree For DIY LED Grow Light/Grow Lamp/LED FloodLight

How about something like this? This thing from Aliexpress looks remotely like a TIR, but I’m not sure if it’s qualifies as one…
By the way, do you want more flood or more throw?

 

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Joshk
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Thanks for looking. That lens is plastic and says up to 50w. I think it may have issues at 100w. How big is the emitter area on yours? I found some glass ones for 26mm LEDs.

rngwn
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Joshk wrote:
Thanks for looking. That lens is plastic and says up to 50w. I think it may have issues at 100w. How big is the emitter area on yours? I found some glass ones for 26mm LEDs.

The LES of my COBs is 22*22 mm.

As far as the lens is concerned, if you are worried that you might burn out the lens with 100w cobs (and you are fine with getting 50w of light output instead of 100w), you can underpower these COBs by pairing them with a 50w driver (or drive them with half the current).

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

rngwn
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bump

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

rngwn
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Updated Stock:

5700k: 56/60 pcs

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

BlueSwordM
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2×5700k and 3×3500k have been ordered.

Looking forward to high CRI goodness.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

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Updated Stock:

5700k: 54/60 pcs
3500k: 14/20 pcs

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

rngwn
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Shipping cost adjusted now that Post office charges less money.

For order < 5pcs:

Tracked Air Shipping is now $5.5 ($ 4.5 for SEA countries)
Untracked Shipping is now $2.25

Shipping for Order > 5pcs is free

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

rngwn
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Added Express shipping service by DHL

Cost (for any amount of purchases): $25 to $45 depending on destination.

 

Searching for High CRI leds since 2010...

 

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strango
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Hi, rngwn.

Do you plan on selling less powerful high cri COBs ?

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Not yet, at least not in the same form factor. The major reason is that by simply sourcing 100w (the most powerful) variant, it gives buyer choices to run it at lower power settings without having to deal with too many product lineups (which I cannot financially deal with as of now). Also, once overheads (such as shipping costs) are taken into the equation, the lesser variants don’t get that much cheaper.

Aside from some tint shifts (that is can potentially be a negative thing), underdriving a more powerful LEDs will result in better efficiency and longer lifespan. As far as voltages are concerned, all variants in this form factor (except the AC ones) are to be run at the same voltage. All you need to do is to pair it with a less powerful drivers or just feed it with less current.

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

Joshk
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strango wrote:
Hi, rngwn.

Do you plan on selling less powerful high cri COBs ?

I assume you mean lower voltage? How much voltage do you have to work with? Is it batteries or wall power?

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The idea is to improve the lightening in my flat (currently ~300 LED Watt, mainly ceiling chandeliers)

I’d better opt for 5-20w COBs and maybe some led chips in 5050/5630/5730/etc size with 0.5w-3w.

100W cob is just over the top for this task imo.
“5mm LED 95+ CRI” from other rngwn’s topic does not suit as well :).

I was looking through alibaba website but finding a reliable supplier with fair HI-CRI LEDs might be a bit tricky…

I have also ordered a pack of 90+cri Samsung LH351D some time ago (thx BLF for http://budgetlightforum.com/node/62087) but use it for “lazy” flashlight mods only.

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For lighting my house I use these LED bulbs
I measured the CRI at 93. But be careful, they are USA voltage.

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Yes, I saw your feedback here – http://budgetlightforum.com/comment/1560139#comment-1560139.
But as you’ve already said they are in the USA and apply for USA voltage.

I need to find either led bulbs for 220V or suitable LED chips, preferably directly from China ( e.g. aliexpress/alibaba/taobao )

rngwn
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IIRC, there is an Aliexpress store named MARSWALLED who sells High CRI strips.

All you need is 220v to 12v driver and a proper tubing.

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

Joshk
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If you want to use these COBs as 9w lighting, you sure can.
From my review you linked, I have tested/operated them like that.

—0.25A 26.5v— (6.6 watts)
CCT: 6191
Duv: 0.0008
CRI: 97.3
TLCI: 99

—0.50A 27.02v— (13.5 watts)
CCT: 6156
Duv: 0.0006
CRI: 97.7
TLCI: 99

id30209
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Need:

2x3500

2x5700

Europe tracked shipping

 

PM coming

WTB Titanium 4sevens 2xAA tube

electromage
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Do you still have these? I’d like two 5700k.

CPF: electromage

Reddit: electromage

rngwn
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electromage wrote:
Do you still have these? I’d like two 5700k.

Yes.

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

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