Two 200w LED COB's, How much to build myself £££ / $$$ Please?

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Fevs

Well-Known Member
Ok, so I have some extra pocket money this week :)

I'm looking at adding some white cobs.

Will somebody that has a clue about self build cob leds please 'guestimate' the cost of my two led's...

My leds I'm thinking of getting are white osram cobs.

So how much will it be compared to this please...?

http://www.budmaster.co.uk/COB-X-4.html
 
V

VegasWinner

Well-Known Member
48 Osram leds at 5w is 240w. You will need a mean well power supply for 250w and 12v maybe $80 off the top of my head. You will need a ldd4up board and four ldd drivers and of course 48 5w leds hope that helps. Peace
 
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Fevs

Well-Known Member
Ok thanks, just roughly, what do you reckon? £200 / $260 all in per led 'with 4 cobs'? So £400 / $520 altogether? That about right?

It seems quite expensive building your own led too. Yeah the pre made leds are more, but they surely will last longer with a fan over each cob.

Everybody else really seems to think a self build is the way to go, I'm not so sure...
 
F

Fevs

Well-Known Member
butterbudface said:
diy will work out cheaper.
Click to expand...
I imagine it would work out cheaper, but by how much? 50%? I just can't see it being as good. Some people have built some nice cob grow lights with metal frames etc. Great spread of light. Fairplay to them, but what did it cost?

I'm trying to work out if it's better to buy a pre done panel, or build my own. I'm currently really not seeing many advantages to building my own.

Ok, if I built 8 x 50w osram cobs, how much cheaper would it be over this figure please? £750 all in? $970
 
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Fevs

Well-Known Member
I'm in the UK

Here is the spec

LED's: 48 x Osram COB
Coverage: 80cm x 80cm
Energy Used: 204w
Input Voltage: 100 - 240v
Frequency: 50 - 60hz
Current: 600ma
Voltage: 70
Dimensions: 31.8 x 31.8 x 6cm
Warranty: 3 Years

A new tested design of small COB arrays has proven to give us considerably more output and a better spectrum for the same input power.

We are now moving forward with each board containing 12 smaller Osram COB in each array in three different colour temperatures.

The immediate benefits are:

  1. The spectral output is closer to sunlight by mixing colour temperatures within the array than using any larger single cobs.
  2. Greater efficiency in the same small footprint, more light out for the same power in. The total output exceeds that of normal 50w COB.
  3. COBS Mounted with the same solder pad technology as the Osram SSL80 family to a triple layer MCPCB, meaning a longer lifespan and faster build.
  4. Better thermal management due to the mounting technology it eliminates any possibility of thermal spikes.
http://www.budmaster.co.uk/cob-x_absorption.png
 
butterbudface

butterbudface

Well-Known Member
Fevs said:
I imagine it would work out cheaper, but by how much? 50%? I just can't see it being as good. Some people have built some nice cob grow lights with metal frames etc. Great spread of light. Fairplay to them, but what did it cost?

I'm trying to work out if it's better to buy a pre done panel, or build my own. I'm currently really not seeing many advantages to building my own.

Ok, if I built 8 x 50w osram cobs, how much cheaper would it be over this figure please? £750 all in? $970
Click to expand...
I guess like 15-25% less.
 
F

Fevs

Well-Known Member
butterbudface said:
I guess like 15-25% less.
Click to expand...
Thanks, that is the answer I was looking for. It's simply not worth my while building my own led, just to save a couple of hundred quid. Cheers

I'm going to buy pre made leds. I made just over $2000 last week, looking at the same this week, and next week. If it was like 1/5 of the price, 1/4 maximum, it may be worth it. I seriously doubt I can build something better than pre made cobs.

Thanks for all the input from all posters here.
 
F

Fevs

Well-Known Member
CobKits said:
looks like any other 4000k 90 cri spectrum
Click to expand...
I'm not so into the technical side tbh, but to me the spectrum looks really good too. I will also be running 3100k 315w cmh agro lamps + 4200k 315w cmh Philips daylight lamps with it. The agro lamps are heavy on the red spectrum so that will have that covered.
 
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