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External 4-pin molex fan controller?

post #1 of 8
Thread Starter 
I am going to be making a fully external Black Ice GTX480. Similar to the one pictured:

Mine will be like the one above, but a bit different. It will be an all black nice looking stand. All the fans will be powered by a separate power supply (http://www.jab-tech.com/12v-DC-Power...r-pr-3776.html) The problem is that I am wanting to get a fan controller that doesn't sit in the 5.25" drive bay, is very simple, and controls all the fans to put on top of the radiator. I cannot seem to find a fan controller as said. Help would be nice. I was looking for something like the ZALMAN FAN MATE 2 Fan Controller, but it uses 3 pins and I need molex. Could someone please tell me if it is possible to control all the fans off of one controller? The fans I am getting are the ones with the single male plug and a female plug to connect multiple molex things together.
    
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post #2 of 8
Unless you have some soldering skills and a bit of electrical knowledge, you're going to need a fan controller with multiple channels broham... attaching several 120mm fans behind a single fan controller would cause each consecutive fan to have less and less voltage (due to having it in series) AND would definitely overload the controller

I would look into the sunbeam rheobus as they come with molex to 3 pin adapters...

If you're REALLY set on using a single controller, you could look into using a 50-100ish ohm potentiometer attached to a low ohm/high wattage resistor (the boxy kind) then attach that to the fans in parallel instead of series
post #3 of 8
Thread Starter 
Quote:
Originally Posted by killa_concept View Post
Unless you have some soldering skills and a bit of electrical knowledge, you're going to need a fan controller with multiple channels broham... attaching several 120mm fans behind a single fan controller would cause each consecutive fan to have less and less voltage (due to having it in series) AND would definitely overload the controller

I would look into the sunbeam rheobus as they come with molex to 3 pin adapters...

If you're REALLY set on using a single controller, you could look into using a 50-100ish ohm potentiometer attached to a low ohm/high wattage resistor (the boxy kind) then attach that to the fans in parallel instead of series
Alright, forget the controller. What if I just set it up with all of them connected to each other and that adapter? Will they run at normal speeds or will each fan after the next have less and less voltage.
    
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post #4 of 8
if there's no controller before your series of fans, attaching them directly to the DC converter should be just fine - 12V will be supplied to each fan... I still think you should consider the sunbeam rheobus... it's only $15+shipping and has 4 channels rated @ 20W each...

You can attach the DC converter directly to the controller's molex header then attach 2 fans to each 3 pin header using the molex->3pin adapters the rheobus comes with
post #5 of 8
Thread Starter 
Quote:
Originally Posted by killa_concept View Post
if there's no controller before your series of fans, attaching them directly to the DC converter should be just fine - 12V will be supplied to each fan... I still think you should consider the sunbeam rheobus... it's only $15+shipping and has 4 channels rated @ 20W each...

You can attach the DC converter directly to the controller's molex header then attach 2 fans to each 3 pin header using the molex->3pin adapters the rheobus comes with
I changed my mind about the speed controller. Thanks. I know for sure I am going to be running all fans at full speed so no point trying to make it fancy.
    
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post #6 of 8
http://www.newegg.com/Product/Produc...82E16812201009

http://www.newegg.com/Product/Produc...82E16812189119
"Features: Power a 3-pin fan with a standard PC power supply 4-pin connector With additional fan speed monitoring connector For Cases, Cooling, and other Accessories"
post #7 of 8
Thread Starter 
I don't think i'm going to get that 12v DC adapter either. I don't want to have to manually turn the fans off.
    
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post #8 of 8
This might work for you! It's HUGE! and will handle 50 Watts!

http://www.sidewindercomputers.com/si50warh.html
    
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