The Chinese Quantum Board Knock Off Builds

[bigmikey86]

Last question lol. How far do you stagger the on times? Like minutes apart?

Oh yeah, even 15-20 seconds. Drivers stabilize pretty quickly, roughly a second or two. I do minutes just to be over cautious. Plus it’s kinda like a poor mans sunrise haha

 

[Cptn]

That's way overpriced for a 330watt light. Don't get that

Shipping on anything long like 1100mm long is gonna be about 3 times more than shorter products (like 500-600mm.)
It's easy to price it out and compare with things like the Kingbrite W55 Quantum bar's where the 1100 is just (2) 560 strips on a longer heatsink:

direct from Shenzhen Kingbrite Lighting Co., Ltd. in CN

Office Supplies from Shenzhen Kingbrite Lighting Co., Ltd.. Search High Quality Office Supplies Manufacturing and Exporting supplier on Alibaba.com.

kingbriteled.en.alibaba.com

direct from Shenzhen Kingbrite Lighting Co., Ltd. in CN

Travel Accessories from Shenzhen Kingbrite Lighting Co., Ltd.. Search High Quality Travel Accessories Manufacturing and Exporting supplier on Alibaba.com.

kingbriteled.en.alibaba.com

I suspect the same issue will apply with every vendor selling light bar format fixtures.

 

[Budjam]

So sites like digikey etc that sell the samsung pcb's.. Is it just one color they sell on a pcb?.. or can you buy them with reds etc also?

Total noob question I now but well.. I'm a light noob.

 

[maddmango]

So sites like digikey etc that sell the samsung pcb's.. Is it just one color they sell on a pcb?.. or can you buy them with reds etc also?

Total noob question I now but well.. I'm a light noob.

one color spectrum per strip but you can combine different strips together. Samsung sells a 2 foot horticultural light but it's like $50 for a two-footer, personally I would put the $40 towards the nearly 4 footer strip.

The BXEB 2700k 90 CRI from future electronics seams to be the way to go because of the UV and Red spectrum within it.

 

[Budjam]

one color spectrum per strip but you can combine different strips together. Samsung sells a 2 foot horticultural light but it's like $50 for a two-footer, personally I would put the $40 towards the nearly 4 footer strip.

The BXEB 2700k 90 CRI from future electronics seams to be the way to go because of the UV and Red spectrum within it.

Thanks
So all these led strip boards you see on alibaba from meijiu, kingbrite, hortibloom etc they basically buy the single diodes of samsung and whoever else and combine them to make custom boards? (print them in house)

 

[maddmango]

Thanks
So all these led strip boards you see on alibaba from meijiu, kingbrite, hortibloom etc they basically buy the single diodes of samsung and whoever else and combine them to make custom boards? (print them in house)

yes

 

[Rocket Soul]

one color spectrum per strip but you can combine different strips together. Samsung sells a 2 foot horticultural light but it's like $50 for a two-footer, personally I would put the $40 towards the nearly 4 footer strip.

The BXEB 2700k 90 CRI from future electronics seams to be the way to go because of the UV and Red spectrum within it.

Its a nice base white spectrum for flower, but contains no real uv, just like almost all standard white leds. You may be thinking of the High light boards which has a version with added uv from a speciality violet led. But its still not really uv, its around 420nm, but as per test seems to get similar response as uva.

 

[DrKiz]

Shipping on anything long like 1100mm long is gonna be about 3 times more than shorter products (like 500-600mm.)
It's easy to price it out and compare with things like the Kingbrite W55 Quantum bar's where the 1100 is just (2) 560 strips on a longer heatsink:

direct from Shenzhen Kingbrite Lighting Co., Ltd. in CN

Office Supplies from Shenzhen Kingbrite Lighting Co., Ltd.. Search High Quality Office Supplies Manufacturing and Exporting supplier on Alibaba.com.

kingbriteled.en.alibaba.com

direct from Shenzhen Kingbrite Lighting Co., Ltd. in CN

Travel Accessories from Shenzhen Kingbrite Lighting Co., Ltd.. Search High Quality Travel Accessories Manufacturing and Exporting supplier on Alibaba.com.

kingbriteled.en.alibaba.com

I suspect the same issue will apply with every vendor selling light bar format fixtures.

Yes sir. You’ll notice standard bar fixtures coming out from manufacturers top out at around 42” long.

Something to do with shipping/packing standardization in rates from freight companies.

Shitty if you want to really fill out a 4x4. 6” short. Lol

So beware if you order the MJ bar series from Meijiu as they’re 46.9” long and fall into a costlier shipping category.

 

[DrKiz]

Its a nice base white spectrum for flower, but contains no real uv, just like almost all standard white leds. You may be thinking of the High light boards which has a version with added uv from a speciality violet led. But its still not really uv, its around 420nm, but as per test seems to get similar response as uva.

I took a uv a/b meter calibrated at 365nm. I was getting readings of about 1/3rd of what I was getting outside while it was cloudy.

Some Uv out of 3000k Lm301b.

Very non scientific. If someone is really interested I could grab the meter and do it again with numbers.

 

[maddmango]

Its a nice base white spectrum for flower, but contains no real uv, just like almost all standard white leds. You may be thinking of the High light boards which has a version with added uv from a speciality violet led. But its still not really uv, its around 420nm, but as per test seems to get similar response as uva.

it puts a smile on my face to be corrected by you

 

[Airwalker16]

There actually IS a strip with 2 ccts on it on separate channels. Bridgelux's Vesta series.
2700k & 5000k

BXEB-TL-2750G-3000-A-13 Bridgelux | Optoelectronics | DigiKey

Order today, ships today. BXEB-TL-2750G-3000-A-13 – LED Lighting COBs Engines Modules LED Module series White, Warm / White, Cool Linear Light Strip from Bridgelux. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

www.digikey.com

 

[Rocket Soul]

I took a uv a/b meter calibrated at 365nm. I was getting readings of about 1/3rd of what I was getting outside while it was cloudy.

Some Uv out of 3000k Lm301b.

Very non scientific. If someone is really interested I could grab the meter and do it again with numbers.

Wow, thats cool. But weird cause there really shouldnt be there. But its really great to see someone doing something like this. To long since anybody here tested shit, hats off. Maybe trying tto compare leds to sunny noon would be better though.

But i would probably have a look at the meter. If there was considerable amounts of uv in samsungs 3000k diodes,it could be a liability issue.

 

[Airwalker16]

I took a uv a/b meter calibrated at 365nm. I was getting readings of about 1/3rd of what I was getting outside while it was cloudy.

Some Uv out of 3000k Lm301b.

Very non scientific. If someone is really interested I could grab the meter and do it again with numbers.

Ya, I'm doubting those readings were accurate. At all...
What meter were you using?

 

[Rocket Soul]

Ya, I'm doubting those readings were accurate. At all...
What meter were you using?

I think theres probably an explanation to this between the meter and cloudy sky...

 

[DrKiz]

Ya, I'm doubting those readings were accurate. At all...
What meter were you using?

Give me a few days. It’s used to measure uv light of black lights. It’s calibrated to a standard on a regular basis. I believe at 365nm. Barely UV A calibrated really.

It is accurate for its purpose. For horticultural lighting?

Anyways. I’ll take some pictures when I get a chance.

 

[DrKiz]

Wow, thats cool. But weird cause there really shouldnt be there. But its really great to see someone doing something like this. To long since anybody here tested shit, hats off. Maybe trying tto compare leds to sunny noon would be better though.

But i would probably have a look at the meter. If there was considerable amounts of uv in samsungs 3000k diodes,it could be a liability issue.

It’s not considerable and likely in the high 360nm+ range so barely UVA.

 

[Airwalker16]

Give me a few days. It’s used to measure uv light of black lights. It’s calibrated to a standard on a regular basis. I believe at 365nm. Barely UV A calibrated really.

It is accurate for its purpose. For horticultural lighting?

Anyways. I’ll take some pictures when I get a chance.

Ya, there's no real UV in any LEDs unless they're UV wavelength specific.

 

[Budjam]

Ya, there's no real UV in any LEDs unless they're UV wavelength specific.

@Airwalker16 still doing my last bit of research on what light before I hit the order button, I seen you in a few threads saying you hate optic led lol
who makes their lights in china for them? they kinda look like meijiu ones to me, with just a couple of small things changed on the design... and the deep blue cree 460nm they have on them.. any good?

 

[Rocket Soul]

@Airwalker16 still doing my last bit of research on what light before I hit the order button, I seen you in a few threads saying you hate optic led lol
who makes their lights in china for them? they kinda look like meijiu ones to me, with just a couple of small things changed on the design... and the deep blue cree 460nm they have on them.. any good?

Dont buy optic unless youre sure of the reseller, recent buyer didnt get his light, no refund and no response to emails. Its in the opptic slim thread iirc.

Edit: And thats directly from the company if i didnt gett it wrong. If you cant trust them with actually giving you a light for your money, can you trust their spec?

 

[DrKiz]

Ya, there's no real UV in any LEDs unless they're UV wavelength specific.

Yeah, there was a slight bump with the Bava’s when I switched on UVA (390nm off the top of my head, if I’m wrong it’s close) but it wasn’t anything dramatic.