fan placement in rack section of Entertainment center (1 Viewer)

[David Sorenson]

I just got a new entertainment center and need to provide circulation in the rack section.
The rack section is completley enclosed with a fairly tight sealing door. There is only 1 small hole in the back for cords (which is jam packed). Within the rack section air can move around the front of the shelves as there is about 1" between the shelf and the door. The back of the shelves have a 4" U shaped opening for cords so air could flow that way as well. The receiver is on top and is the main heat generator. The CD player doesn't have any vents on the unit so I assume it's fairly cool. The DVD player is the only other unit with vents and is on the lower shelf.
I was considering 3 setups. 1) put a fan on the Receivers level to blow in or out (don't know which is better). 2) put a fan on the receivers level and the lower level with one blowing in and one blowing out. 3) Put two fans on the receivers level with one blowing in and one blowing out.
Any suggestions on which would be best?
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[Jerry St.Marie]

One fan on the back of the unit at the top blowing out. I've got the same situation.

 

[Dave Gates]

One fan on the receiver (upper) level blowing out. Also put an open vent at the lowest level to provide for air circulation within the rack. With out the vent the fan will not have anywhere to pull air from, and would be virtually useless.

 

[Bill Catherall]

I've seen intake vents you could get that have a dust filter to cut down on the amount of dust pulled into the encloser. It won't prevent all dust because you'll still be opening the door, but without it, you'll be sucking in dirt with all that air for circulation.
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Bill