My 1000w Hps Killer

Getgrowingson

Getgrowingson

Well-Known Member
Hey guys so after a loooong time of researching and sourcing parts I have almost completed my first diy build.

Specs are as follows.
12 x CXB3590 3500K CD driven at 700ma.
12 x 100mm 80* lenses from kingbrite.
3 x Meanwell Hlg185C-700.
3 x 36" 5.88" Heatsinks
3 x Noctua NF-A14 140mm PWM fans.

Have basically everything complete, just need to mount the cobs and holders. Worst part was the tapping but I haven't done it in a while so it took a little longer then expected. I spared no expense or time on this baby and am pretty proud of her. Can't wait to fire her up! And thanks again for everyone's info and guidance throughout the project and from everyone's very helpful threads.

Here are some pica before I mount the cobs and lenses.
 

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silvrsurfer77

silvrsurfer77

Well-Known Member
GIJonas said:
Thing looks sick. However do you have a price comparison to the hps? ;-)
Click to expand...

Im building something very similar and I can tell you some pricing but it will vary with how you design the fixture.

(12) cxb 3590 @ $47.5ea from kingbrite = $570 ( then shipping options and possible paypal fee)
(3) Meanwell drivers @ $65ea = $195 (+tax&shipping)
(3) 5.88x36 heat sinks @ 62ea = $186 (+tax&shipping)


So your looking at $951 , plus lenses if you choose, plus tax shipping and fees, plus materials like wire, hardware, thermal paste, tools. If your starting with nothing I would say $1200 easily. Its a big investment but what made me go for it was less heat and more efficiency. When you factor in changing hps bulbs and extra AC for them, you make up the difference quickly.

Im basically doing the same set up but ran at 1.4A and dim-able and passively cooled. Still building it though. @1.4A Ive been told cxb 3590 gets 56% efficiency and at 700ma its almost 64% lumens per watt efficiency.
 
Abiqua

Abiqua

Well-Known Member
GIJonas said:
Thing looks sick. However do you have a price comparison to the hps? ;-)
Click to expand...
An HPS only?

Or reduced wattage and hence reduced heat wattage...as well as

Reduced wattage over each sq ft because of spread evenness?

along with

Bulb changes

and

AC use?


Not so easy to compare HPS and LED fixture cost, straight up fixture to fixture.........except if you account every variable that will appear/dissappear in your grow....:peace:
 
ttystikk

ttystikk

Well-Known Member
Me likey! This is the first time I've seen the price of heat sinks... and damn, they are proud of a silly chunk of aluminum, aren't they?

Suddenly, I'm thinking my lil experiment might save some coin on the build-up, let alone operation...
 
silvrsurfer77

silvrsurfer77

Well-Known Member
gk skunky said:
What voltage? 72?
Click to expand...
Im doing the 36v

ttystikk said:
Me likey! This is the first time I've seen the price of heat sinks... and damn, they are proud of a silly chunk of aluminum, aren't they?

Suddenly, I'm thinking my lil experiment might save some coin on the build-up, let alone operation...
Click to expand...
If you wan you can try the 4.85" wide heatsink its much cheaper slightly thinner and will need a fan. I have to the 5.8 is pricey, but its one heavy ass chunk of aluminum, the whole thing is pretty meaty, fins are thick and strong wont bend or flex at all.
 
Getgrowingson

Getgrowingson

Well-Known Member
silvrsurfer77 said:
Im building something very similar and I can tell you some pricing but it will vary with how you design the fixture.

(12) cxb 3590 @ $47.5ea from kingbrite = $570 ( then shipping options and possible paypal fee)
(3) Meanwell drivers @ $65ea = $195 (+tax&shipping)
(3) 5.88x36 heat sinks @ 62ea = $186 (+tax&shipping)


So your looking at $951 , plus lenses if you choose, plus tax shipping and fees, plus materials like wire, hardware, thermal paste, tools. If your starting with nothing I would say $1200 easily. Its a big investment but what made me go for it was less heat and more efficiency. When you factor in changing hps bulbs and extra AC for them, you make up the difference quickly.

Im basically doing the same set up but ran at 1.4A and dim-able and passively cooled. Still building it though. @1.4A Ive been told cxb 3590 gets 56% efficiency and at 700ma its almost 64% lumens per watt efficiency.
Click to expand...
Mine is set up for dimming as well. If you look at the junction box pic you can see the top of the potentiometer and the big black tube looking thing is my limiting resistor. So I can dim down to 15% if I want. I just want to run as low of wattage as possible yet still get the yields I get with 1000w hps. Shooting for better quality as well of course. The chips are 72v version so each chip is pushing around 50 w
 
gk skunky

gk skunky

Well-Known Member
Getgrowingson said:
Mine is set up for dimming as well. If you look at the junction box pic you can see the top of the potentiometer and the big black tube looking thing is my limiting resistor. So I can dim down to 15% if I want. I just want to run as low of wattage as possible yet still get the yields I get with 1000w hps. Shooting for better quality as well of course. The chips are 72v version so each chip is pushing around 50 w
Click to expand...
Good deal man. I'd expect a 1k killer then too. My 6-cxa 3070 z4s and a51s are cutting the cake so with the right genetics and know how should be no problem with your setup. I think you're good man. will be patiently watching.
 
ttystikk

ttystikk

Well-Known Member
silvrsurfer77 said:
If you wan you can try the 4.85" wide heatsink its much cheaper slightly thinner and will need a fan. I have to the 5.8 is pricey, but its one heavy ass chunk of aluminum, the whole thing is pretty meaty, fins are thick and strong wont bend or flex at all.
Click to expand...
I dunno, man- I could swear we're building a light fixture, not a bridge! You growing under the I-95? LOL

Seriously, I smell opportunity for improvement.
 
Stephenj37826

Stephenj37826

Well-Known Member
Better get hlg185h c1400 if you want to run 36 volt cobs. 1 hlg 185h c700 will run 8 36v. Or 16 cobs and 2 c700 drivers.
 
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Getgrowingson

Getgrowingson

Well-Known Member
ttystikk said:
I dunno, man- I could swear we're building a light fixture, not a bridge! You growing under the I-95? LOL

Seriously, I smell opportunity for improvement.
Click to expand...
I could have used smaller heatsinks but when it comes to growing people want redundancy. What happens if you cheap out and use a smaller heatsink and you loose a fan or something? Your cobs cook and there goes the cob(s). At least what I have found its better to play it safe then run UN necessary risks
 
ttystikk

ttystikk

Well-Known Member
Getgrowingson said:
I could have used smaller heatsinks but when it comes to growing people want redundancy. What happens if you cheap out and use a smaller heatsink and you loose a fan or something? Your cobs cook and there goes the cob(s). At least what I have found its better to play it safe then run UN necessary risks
Click to expand...
Lots of ways to skin the redundancy/fault tolerance cat. Not saying your big heat sink is bad or wrong, I'm just surprised at how expensive it was. I mean, no moving parts!
 
silvrsurfer77

silvrsurfer77

Well-Known Member
ttystikk said:
I dunno, man- I could swear we're building a light fixture, not a bridge! You growing under the I-95? LOL

Seriously, I smell opportunity for improvement.
Click to expand...

LOL well, from what the more experienced ppl told me on here the 5.8" profile has a thicker base and fins for better heat dissipation. I do wish they were a bit lighter in weight. But hey if they dont work I can build a bridge ;P

The 4.8" should be solid and work fine, you will have to put fans on them though from what ive been told.
 
ttystikk

ttystikk

Well-Known Member
silvrsurfer77 said:
LOL well, from what the more experienced ppl told me on here the 5.8" profile has a thicker base and fins for better heat dissipation. I do wish they were a bit lighter in weight. But hey if they dont work I can build a bridge ;P

The 4.8" should be solid and work fine, you will have to put fans on them though from what ive been told.
Click to expand...
Just you wait until you see what I've got up my sleeve...
 
silvrsurfer77

silvrsurfer77

Well-Known Member
Getgrowingson said:
I could have used smaller heatsinks but when it comes to growing people want redundancy. What happens if you cheap out and use a smaller heatsink and you loose a fan or something? Your cobs cook and there goes the cob(s). At least what I have found its better to play it safe then run UN necessary risks
Click to expand...

Thats why I opted for the 5.88" also, I prefer passively cooled and since I have tents with inline fans hooked up, you get lots of air flow anyways. I personally dont mind the extra weight to have more security against failure and better cooling efficiency. All in all the only draw back if any to our lights is weight and initial cost. I can deal with those to get 50+ efficiency lol
 
silvrsurfer77

silvrsurfer77

Well-Known Member
Stephenj37826 said:
Better get hlg185h c1400 if you want to run 36 volt cobs. 1 hlg 185h c700 will run 8 36v. Or 16 cobs and 2 c700 drivers.
Click to expand...
hlg185h c1400b are my drivers per 4 cxb3590 36v. I would run more I would to 8 at 700ma if I had the money for all those cobs lol....@ 4per driver @1.4a its 56% efficiency as opposed to 64% at 700ma. 8% difference and huge price diff, so for me its the happy medium value point
 
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