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Media cabinet fan


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I have all of my components in a cabinet that I have cut a grill out at the top and also some slats under the doors. The cabinet is MDF all around with no other ventilation. I have also cut some of the back of each shelf to enable cabling and some ventilation.

I would like to stick a fan under the top grill (240v) to exhaust some of the hot air as it still seems to get pretty warm in there.

I went to Jaycar and Radio parts and all their 240v fans were too loud and high speed. I just need anything between 10-20cfm with db under 20.

Does anyone have any suggestions as I am sure other people have already encountered this problem?

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Does anyone have any suggestions as I am sure other people have already encountered this problem?

I use 12v fans hooked up to variable voltage power pack, and run them at 6v, another way is to connect a couple in series and run them at 12v, or put a resistor in series.

Much easier to play with LV fans than mains operated ones.

Dick

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JD

Are you sucking hot air out or blowing air in ?....because if your blowing air IN you should have a filter on the fan especially if there are smokers around! and as Justin suggested ball bearings are the way to go don't touch the cheap & nasty brushless type they will size up in no time..

cheers laurie

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Dicksmith sell 12cm 240v ball bearing fans for about $30-40, very quiet and powerful.

I had a 240 V 12 cm fan, (cannot remember if it was a DSE).

Cut a hole in the back of the cabinet, wired up to the switched power out of the back of the amp and switched it all on.

Voila!, a Harrier Jump Jet in the living room!

JB

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thanks for all the suggestions. It seems that nothing is straight forward. I am using the fan to exhaust the air. I think I might look into Spearmints suggestion as all the 240v fans show specs that are really noisy. I am looking for "whisper quiet". Truthfully, for what I need, if only I could find a little 240v square desk fan and mount it underneath (they are weak but very quiet). Jaycar had one but it was square or able to be mounted so I had to pass.

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thanks for all the suggestions. It seems that nothing is straight forward. I am using the fan to exhaust the air. I think I might look into Spearmints suggestion as all the 240v fans show specs that are really noisy. I am looking for "whisper quiet". Truthfully, for what I need, if only I could find a little 240v square desk fan and mount it underneath (they are weak but very quiet). Jaycar had one but it was square or able to be mounted so I had to pass.

Some ideas, and you may need more than one since to be quiet they don't flow a lot of air.

Thermaltake SilentCat 9cm fan w/multidirectional intake, 8->9cm adapter and 3-pin connector, quiet 2.16W, 21dbA 52CFM

Thermaltake 90mm Smart II case fan w/3-wire plug, 1300-4500RPM, 25-45dBA, 25mm thick

There are other quiet case fans made for computers!

B

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I agree with the last post - PC case fans are best. Don't buy the generic (DSE) 12v fans or any 240v jet-like models

I'm using a 120mm Vantec Stealth 12v fan ($20) in my coffee-table/hushbox, running at 7.5V from a multi-voltage plugpack ($15). Almost silent and moves a lot of air.

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