chinese led lights

[undertai]

Damai Video:

http://v.youku.com/v_show/id_XMzM0ODIwMzI4.html

[Zoanut]

Originally Posted by undertai

Damai makes some nice looking lights. If you contact them directly you can customize the light. I think they come with white and blue. To add UV it will cost $1 more. Green and red for free.

Here is a price list I got from them last night. Includes a wireless controller for dimming and one controller can control 10 different fixtures. Price does not include shipping but is around $35 to $45 FEDEX 5 day shipping?

DM-40X3W-B (Bridgelux chip)
Unit price: USD248.00 (including wireless controller)

DM-40X3W-C (Cree chip)
Unit price: USD289.00 (including wireless controller)

DM-56X3W-B (Bridgelux chip)
Unit price: USD289.00/pc (including wireless controller)

DM-56X3W-C (Cree chip)
Unit price : USD335.00/pc (including wireless controller)

DM-80X3W-B (Bridgelux chip)
Unit price : USD335.00/pc (including wireless controller)

DM-80X3W-C (Cree chip)
Unit price: USD398.00/pc (including wireless controller)

I'm getting the

DM-40X3W-C (Cree chip)
Unit price: USD289.00 (including wireless controller)

Here is my specs for the light
22 royal Blue
10 cool white 14k
8 natural white 6500k

They were the first ones I was looking at but the deal breker for me was I couldn't pay through paypal or with credit card. They are nice looking lights though.

[undertai]

update!

shipping is $86 so total for cheapest including shipping is $375

[Chicago]

How. Certain are we that these are really. Cree good bins Ect

[bhazard451]

Originally Posted by undertai

update!

shipping is $86 so total for cheapest including shipping is $375

These fixtures over $300 are just too pricey for no US warranty and non premium leds. Why bother when a warranty and better quality leds are only around $20 more for commercial fixtures? They say Cree, but they are not being driven fully, and may not be a good quality bin or real Crees at all. XPE Crees are also 2 generations old now (2 years).

[secrest]

Received my d120 this morning . I'm surprised by how fast it was, ordered on Friday and got them today. Now I just need to figure out a way to hang it, like everyone else has said, the kit they send you to hang them is terrible.

[Zoanut]

Simon finally gave me my tracking number just now and said it has been sent. Why lie to me and tell me it was sent a few days ago and then only just send it now? I will never buy anything from from twilight again and would not recommend anyone else deal with them either. Its taken them 15 days to finally send my light.

[bhazard451]

Originally Posted by secrest

Received my d120 this morning . I'm surprised by how fast it was, ordered on Friday and got them today. Now I just need to figure out a way to hang it, like everyone else has said, the kit they send you to hang them is terrible.

How does it look?

[nynick]

Prolly a misunderstanding. Most of them are shipping from mainland China to HongKong, then to you. I know mine left the factory very fast but officially only went on tracker several days later once they left HK.

[ali1]

I really liked Travis's pictures, but I'm wondering if the reefbrite helped in the purple tinting. I would like to see tank shots with the d120. After reading several pages, it looks like you may have to go with 2:1 white to blue to prevent the blue from drowning the rest of the colors.Thanks to all of you for contributing and sharing your experience with these fixtures.

Anyone else got more tank shots with their chinese fixtures?

[bhazard451]

Originally Posted by ali1

I really liked Travis's pictures, but I'm wondering if the reefbrite helped in the purple tinting. I would like to see tank shots with the d120. After reading several pages, it looks like you may have to go with 2:1 white to blue to prevent the blue from drowning the rest of the colors.Thanks to all of you for contributing and sharing your experience with these fixtures.

Anyone else got more tank shots with their chinese fixtures?

2:1 white to blue would be insanity. The reason it is so blue, is that the Cool Whites being used have a lot of blue in them too.

2:1 blue:white gets you 14k if you use neutral and warm whites (6500k and under).

[cec09]

Does anyone contact Sam regularly? I have been having a hard time getting a hold of him. I got some extra LEDs shipped to me in a friends order and want to know if there is a way to tell exactly what Temp they are. I was supposed to get 6500k but there are no markings on the LEDs ro the bags and I don't want to go through the hassle of replacing them if they will be the same as the 10000k that is in there now

[bhazard451]

Originally Posted by cec09

Does anyone contact Sam regularly? I have been having a hard time getting a hold of him. I got some extra LEDs shipped to me in a friends order and want to know if there is a way to tell exactly what Temp they are. I was supposed to get 6500k but there are no markings on the LEDs ro the bags and I don't want to go through the hassle of replacing them if they will be the same as the 10000k that is in there now

Multimeter.

http://www.youtube.com/watch?v=vC6TjdkML2E

[undertai]

Pictures of the G3 from Damai

[secrest]

Originally Posted by bhazard451

How does it look?

It looks great so far. It looks like it should be able to light the whole tank pretty well. Won't know for sure until I get something better to hang them with though.

[undertai]

Looks as if they use a notebook power supply. If the lights are being under driven you can always get a different power supply or go to radioshack, frys, or order a more powerful power supply online. And either get the right plug or cut and splice the plug to your new power supply.

[cec09]

Originally Posted by bhazard451

Multimeter.

http://www.youtube.com/watch?v=vC6TjdkML2E

Thanks. Dont know why I didnt think about firing it up. LOL
John

[bhazard451]

Originally Posted by undertai

Looks as if they use a notebook power supply. If the lights are being under driven you can always get a different power supply or go to radioshack, frys, or order a more powerful power supply online. And either get the right plug or cut and splice the plug to your new power supply.

Not true. If that power supply drives the leds, and you modify it without knowing how it is connected, how the leds are wired, and the current that needs to be used, it would be an easy way to blow up every led in the fixture.

[darimont]

Originally Posted by Zoanut

Simon finally gave me my tracking number just now and said it has been sent. Why lie to me and tell me it was sent a few days ago and then only just send it now? I will never buy anything from from twilight again and would not recommend anyone else deal with them either. Its taken them 15 days to finally send my light.

I had no problem with my custom order. Ordered on a Monday, shipped the next Monday, had at my door the following Monday. 2 Weeks from time off order to delivery isn't to bad in my book coming from China.

[noneedforleads]

Hey guys interested in a set. What do you guys recommend for a 92 gallon corner tank? I It has a 3ft opening on the top but is a quarter circle. Thanks alot!!

[AcroBluz]

I received my PAR meter today and have tested my Nova a4 setup at full power. I originally bought these for my 150g tank but had to sell my equipment due to a pending move. I have now set up my a4 on a 12g nano and thought I might share my PAR numbers with those wondering about the PAR levels.
My A4 has 90deg optics and is setup as follows
dimmer 1 - 24x Royal blue
dimmer 2 - 20x 12000k white and 4x 400nm
The light current sits 8" above the water surface and the sand bed is 18" below the bottom of the light. The following PAR numbers listed are with the light at 100% on both dimmers. This is just to give an idea on how much PAR the a4 puts out. The red numbers are direct center of the tank, the other numbers are on the sides.


I currently run my lights at 30% in order to keep my PAR around 300 near the top of the rock work.

[undertai]

Originally Posted by bhazard451

Not true. If that power supply drives the leds, and you modify it without knowing how it is connected, how the leds are wired, and the current that needs to be used, it would be an easy way to blow up every led in the fixture.

All you have to do is connect positive to positive and negative to negative. I have done it before to a couple of DIY leds I had. Nothing went wrong. The power supply uses one tip. It's just the power of the power supply you need to worry about. If their Crees you can push them up to 700ma depends on what Cree they use. Look on the power supply and HTML will tell you the ma that it is. Maybe 600 or 500ma. Then buy a power supply with the same amps But 700ma.

Sent from my SPH-D710 using Tapatalk 2

[moshi1ry]

My d120 on my hex! The hanging isnt perfect but shows off the light pretty well. Sorry the pictures are not better but this light is AWESOME of course i just upgraded from a old halide but this thing is sweet. 30 blue 25 white if anyone was wondering with 90 optics. I got a second one plan is to put both on my 90 gallon upgrade in a few weeks!

[terancevan88]

Just got my 2 d120 in same layout as cmantis look great still getting everything together for tank will post pics once it's full

Color popping

[bhazard451]

Originally Posted by undertai

All you have to do is connect positive to positive and negative to negative. I have done it before to a couple of DIY leds I had. Nothing went wrong. The power supply uses one tip. It's just the power of the power supply you need to worry about. If their Crees you can push them up to 700ma depends on what Cree they use. Look on the power supply and HTML will tell you the ma that it is. Maybe 600 or 500ma. Then buy a power supply with the same amps But 700ma.

Sent from my SPH-D710 using Tapatalk 2

No, that picture helps though.

It uses 8 driver chips running anywhere from 650-1000mah each, connected to 6 leds per driver chip. Heat is dissipated from the pcb board they are on to the heatsink. The driver chips are preset to whatever current mah they set it to use. The power supply is probably around 5-6 amp, which cut 8 ways is 650 mah. Adding a power supply with more amps would do nothing.

Its a smart design, but I don't feel enough leds are used for its size. The d120 would actually be the stronger light, at half the price.

They also don't dim very smoothly. Check out this other video. The dimming isn't smooth at all.

http://v.youku.com/v_show/id_XNDMwOTM5NDk2.html