I recently completed the following setup;

axiom m60, vp150, qs8, and hsu stf-2 running on an onkyo tx-nr801 receiver.
the receiver gets pretty warm when a dvd is running. i have the receiver and dvd player on a non-enclosed tv stand. there are 4 inches of clearance between the top of the receiver and the top of the stand. is this enough room for ventilation or do i need to install a pair of fans? (the manual recommends 8")

see picture - http://home.comcast.net/~awaters2879/Picture_044.jpg

also, does anyone know of a solid cooling solution???