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Media Cabinet Cooling

post #1 of 9
Thread Starter 
I'm turning one of my sister's built in cabinet's in her family room in to a media cabinet. I'm running HDMI and Composite in there and a power Receptacle. They are gonna have their cable box, 360 and PS3 in there and maybe HTPC in there eventually. So obviously it's gonna get hot and need a cooling solution.

So I was thinking 2 120mm fans in the bottom of each door make 4 total for intake, with 2 in the top for exhaust. Then rigging an old cheap PSU to always turn on to run them and have a outlet thermostat to turn the PSU on and off as needed. I'm gonna put some kind mesh in front of the fans so you can't see them from the outside and class it up with some small trim around the openings.

2 questions
1: does anyone have a better idea for a power supply for the fans?
2: do you think those fans would be enough? I was gonna go with 80+CFM fans. The cabinet is about 30"x30"x17".
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post #2 of 9
Although these words aren't uttered here frequently, that would be excessive and I wouldn't recommend it.

1) 80+cfm fans are LOUD. In a home theater system you're going to hear the fans over the speakers.
2) You don't need 4 of them because then you're talking about 320cfm total, which would replace all the air in the opening you dimensioned every .025 seconds... I could tell you this is wildly un-neccessary, but I don't feel I have to.
3) You can get away with just 1 or 2 small fans in that opening along with making it mesh, you shouldn't need much in the way of forced air cooling in there.
4) If you close the cabinet completely then wireless devices won't have as much range, and any IR remotes may have issues.
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by CTRLurself [Knyte Custom] View Post
Although these words aren't uttered here frequently, that would be excessive and I wouldn't recommend it.

1) 80+cfm fans are LOUD. In a home theater system you're going to hear the fans over the speakers.
2) You don't need 4 of them because then you're talking about 320cfm total, which would replace all the air in the opening you dimensioned every .025 seconds... I could tell you this is wildly un-neccessary, but I don't feel I have to.
3) You can get away with just 1 or 2 small fans in that opening along with making it mesh, you shouldn't need much in the way of forced air cooling in there.
4) If you close the cabinet completely then wireless devices won't have as much range, and any IR remotes may have issues.
Well I'm kinda known for over doing things. You should see how I built my desk you could use it as a jack stand. also I'm kinda skeptical of manufacture reported CFM ratings. But noise is something to think about. As for the IR remotes I'm planing on cutting out the center of the doors and putting glass in.
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post #4 of 9
Quote:
Originally Posted by Col. Newman View Post
Well I'm kinda known for over doing things. You should see how I built my desk you could use it as a jack stand. also I'm kinda skeptical of manufacture reported CFM ratings. But noise is something to think about. As for the IR remotes I'm planing on cutting out the center of the doors and putting glass in.
On nicer fans those ratings are usually pretty close.

The noise will be the big thing. You really don't need much in the way of forced cooling, just a couple of quiet low-speed fans and some mesh and you'd be fine.

Think about the cooling you'd put into an HTPC. It would likely have two fans that were ~25-40cfm in it. That's what I'd put into the cabinet so that the HTPC is getting as much fresh air into the cabinet as it is actually using. You're not cooling your cabinet, you only need to cool what's in it.
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post #5 of 9
i would have the cabinet with a front intake ( simple mesh somewhere doesnt have to be shown.. )
and then everything inside ( computers ect ) have slow intake fans thru the front of say the comp case.. ) and out the back as normal.

just at the back of the cabinet.. have .. 2? or 4 120mm fans.. get something quite.. and it should keep the air moving and Should stay cool
    
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post #6 of 9
Why not AC fans with controllers? No need for a PSU and extra heat dump. Just set them on that temp monitor you have if you wish and keep them toned down.

One intake bottom front, one exhaust top.
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post #7 of 9
g.gif As for the IR remotes I'm planing on cutting out the center of the doors and putting glass in.
post #8 of 9
Thread Starter 
Quote:
Originally Posted by Rognin View Post

Why not AC fans with controllers? No need for a PSU and extra heat dump. Just set them on that temp monitor you have if you wish and keep them toned down.
One intake bottom front, one exhaust top.
well I thought of that I just didn't think I could find ac fans small enough that would mount easy. I'll see if I can find some. thumb.gif
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post #9 of 9
Look up Frozen CPU in the AC fan section (don't need to buy from them, but it'll give you a couple leads for manufacturers).
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