Minimalistic multichip DIY LED build

[mr.wilson]

Except group buys cannot be done here, shilling is highly frowned upon, and there is no reason to have to sell the thing in a group buy instead of individual sale. The whole thing is beyond shady.

Funny thing is, it isn't even optimal. You're stuck with one choice of how the channels are laid out, because that is how a few people organized it based on how they wanted it, without even seeing it or testing it before it shipped.

It is ironic that with 5 colours, 5 drivers & 5 sets of wires the spectral selection is limited.

The whole idea of spending over $10,000.00 on test chips with zero R&D was silly from the start. There are manufacturers out there that would make one sample at a reasonable cost. This is why they send dogs & monkeys into space

I know I'm going to get "I knew what I was getting into" from people, but I'm not convinced that you did.

 

[mr.wilson]

I like it so far - everything looks at least as good as it did before the switch... Previously I had a fixture with a 60w 4100k citizen emitter surrounded by 26x3w 445nm blues and 8x3w 420nm.

The orange cap monti is a noticeably darker shade of orange.

It appears that your old (unique) chips were very similar to the dream chip, so there shouldn't be much of a difference other than shimmer and colour mixing.

Are you saying that your monti cap has changed to a darker pigment in less than a week? Corals darken in dimmer light. Is the new light less intense than your outgoing light? Were the optics more narrow?

 

[Lassef]

Without seeing the chip myself, I would estimate the colour temperature to be about 10k with all channels at 100%. Dimming the whites will make it look a little more violet.

I have seen the chip and thats not true. You are able to vary the colour temperature between 10 000 and up to around 20 000 K (compared with MH) However - you can´t get the deep blue colour as you get with RB chips only.

Sincerely Lasse

 

[mr.wilson]

Red 660nm itself really does make everything pop, especially fish. Using a low K white with a considerable amount of red in it doesn't even provide the same pop. I would considered a small amount of 660nm essential for any build to get really nice color.

I use one row (10%) 660nm reds. I drive them at 12w max on a 185w multichip, but dim them at least 50%. The red looks nice at dawn & dusk and probably resembles sunlight shining through the earths atmosphere, however fleeting that moment may be in nature.

 

[mr.wilson]

I have seen the chip and thats not true. You are able to vary the colour temperature between 10 000 and up to around 20 000 K (compared with MH) However - you can´t get the deep blue colour as you get with RB chips only.

Sincerely Lasse

How do you get true 20k light by mixing 10K & 16K LEDs?

This is what I use in my shop to get 20K. You need a lot of visible blue light to get 20K out of an LED. The whites are "16K".

 

[bhazard451]

I have seen the chip and thats not true. You are able to vary the colour temperature between 10 000 and up to around 20 000 K (compared with MH) However - you can´t get the deep blue colour as you get with RB chips only.

Sincerely Lasse

This is telling. So you're saying you can't turn off the white and violet channels, and have a pure 450nm royal blue channel available with decent output? You don't have a channel that can provide the most needed light wavelength a reef requires, and is available on any other type of setup? Wow. Lol

Sent from my SGH-T999 using Tapatalk 2

 

[Lassef]

I compare with MH of different temperatures that I have seen and the mixing with the blue channels give me lights that I can compare with these. It is not much white I run at the higher K

Of course you can reply that I have not seen real 20 000 K MH.

Sincerely Lasse

 

[Lassef]

You don't have a channel that can provide the most needed light wavelength a reef requires,
Sent from my SGH-T999 using Tapatalk 2

And that is?

Sincerely Lasse

 

[mr.wilson]

I compare with MH of different temperatures that I have seen and the mixing with the blue channels give me lights that I can compare with these. It is not much white I run at the higher K

Of course you can reply that I have not seen real 20 000 K MH.

Sincerely Lasse

The Giesemann 20K MH is a nice crisp white that looks more like 14k. Phoenix 14k is an eerie blue, while Ushio 14k are a true 14k that still looks white. Most 20k MH look eerie blue.

The lights in my shop look exactly the same colour as a Radion set at 20K positioned right beside them.

If I recall correctly, the dream chip is (420, 430, 435, 440, 10 & 16k)? If so, the 440nm blue is at the violet end of royal blue range and subsequently hard for us mere mortals to see.

 

[rkesling]

The Giesemann 20K MH is a nice crisp white that looks more like 14k. Phoenix 14k is an eerie blue, while Ushio 14k are a true 14k that still looks white. Most 20k MH look eerie blue.

The lights in my shop look exactly the same colour as a Radion set at 20K positioned right beside them.

If I recall correctly, the dream chip is (420, 430, 435, 440, 10 & 16k)? If so, the 440nm blue is at the violet end of royal blue range and subsequently hard for us mere mortals to see.

100 LED Dream Chip:
1) 20 x 10000K
2) 20 x 455nm (blue, beneficial to chlorophyll C)
3) 10 x 420nm, 10 x 430nm (UV range)
4) 20 x 445nm (blue, beneficial to chlorophyll C)
5) 20 x 15000K

I believe is what the first and new chips are/will be.

 

[Lassef]

100 LED Dream Chip:
1) 20 x 10000K
2) 20 x 455nm (blue, beneficial to chlorophyll C)
3) 10 x 420nm, 10 x 430nm (UV range)
4) 20 x 445nm (blue, beneficial to chlorophyll C)
5) 20 x 15000K

I believe is what the first and new chips are/will be.

Exactly, more than 50 % of the power of the chip is concentrated at the wavelengths around 435 - 465 with peaks at 445, 455 and 460 (the blue peak of the two white channels)

Sincerely Lasse

 

[mr.wilson]

100 LED Dream Chip:
1) 20 x 10000K
2) 20 x 455nm (blue, beneficial to chlorophyll C)
3) 10 x 420nm, 10 x 430nm (UV range)
4) 20 x 445nm (blue, beneficial to chlorophyll C)
5) 20 x 15000K

I believe is what the first and new chips are/will be.

I stand corrected. I didn't realize that there was a 455nm chip. I really wish you would stop posting that nonsense about chlorophyll C.

 

[rkesling]

I stand corrected. I didn't realize that there was a 455nm chip. I really wish you would stop posting that nonsense about chlorophyll C.

Sorry buddy! just a copy and paste from the chip listing - maybe you have the YOU mixed up with someone else

 

[mr.wilson]

Yes, I realize that you were just posting it from before, and thank you for doing so. The "you" was directed at the person who keeps posting it.

 

[mr.wilson]

Exactly, more than 50 % of the power of the chip is concentrated at the wavelengths around 435 - 465 with peaks at 445, 455 and 460 (the blue peak of the two white channels)

Sincerely Lasse

1) 20 x 10000K
2) 20 x 455nm
3) 10 x 420nm, 10 x 430nm
4) 20 x 445nm
5) 20 x 15000K

40% of the multichip falls between 435 - 465 plus whatever is in the white chips, but yes, I could see 20K being possible if you dim the white enough.

 

[rkesling]

Yes, I realize that you were just posting it from before, and thank you for doing so. The "you" was directed at the person who keeps posting it.

gotcha! Just posted it because I've been considering getting a chip or two and was looking the other site at the time.

I reserve my opinions on the group buy stuff but I am interested in seeing how these end up in the long run with the testing with all of those that are using them. It's a great idea but I'm not 100% sold on it.......yet!

 

[mr.wilson]

gotcha! Just posted it because I've been considering getting a chip or two and was looking the other site at the time.

I reserve my opinions on the group buy stuff but I am interested in seeing how these end up in the long run with the testing with all of those that are using them. It's a great idea but I'm not 100% sold on it.......yet!

I saw the "group buy #2" info, but I was pretty sure that the new order is different than the first. I tried looking back in this thread but there were all kinds of proposals tabled and I couldn't find the final version.

 

[rkesling]

I saw the "group buy #2" info, but I was pretty sure that the new order is different than the first. I tried looking back in this thread but there were all kinds of proposals tabled and I couldn't find the final version.

I think this is the first one (same design for the 2nd one it seems):

Channel 1) 10S x 2P 10000K (EPISTAR: 45mils)
Channel 2) 10S x 2P 455nm (EPISTAR: 45mils) (blue, beneficial to chlorophyll C)
Channel 3) 10S x 420nm parallel with 10S x 430nm (EPILED: 45mils) (UV range)
Channel 4) 10S x 2P 445nm (EPISTAR: 45mils) (blue, beneficial to chlorophyll C)
Channel 5) 10S x 2P 15000K (EPISTAR: 45mils)

(sorry about the Chlorophyll!!!! HA-HA Copy and paste again)

 

[Lassef]

I stand corrected. I didn't realize that there was a 455nm chip. I really wish you would stop posting that nonsense about chlorophyll C.

Nonsens Why ?

Sincerely Lasse

 

[Lassef]

1) 20 x 10000K
2) 20 x 455nm
3) 10 x 420nm, 10 x 430nm
4) 20 x 445nm
5) 20 x 15000K

40% of the multichip falls between 435 - 465 plus whatever is in the white chips, but yes, I could see 20K being possible if you dim the white enough.

It will be more than 50 % because the white chips has its blue peak around 460 and the blue part of the white chips are rather large according to the spectral graph.

Sincerely Lasse