Just picked up a relatively lightly used Onkyo HT-RC 160 AV receiver that I've placed in my office for (mostly) movies and surround-sound playback. The sucker runs crazy hot, not helped by a three-inch clearance between the top of the unit and a glass shelf above it. Anyway in a fit of brilliance I went to Frys and grabbed two super-quiet computer fans (shown, about 5" x 5" apiece) that I connected to an AC adaptor for power. They work like a charm but here's the question, dumb as it it may be: Should I place one in a downward-firing position and the other in an upward-firing position above the "hottest" areas on the grills, or it is better to have both firing in the same direction? The upward/downward combo definitely makes a big difference but if there are any dangers/concerns you see in this approach I'd love to get some feedback. Thanks, nerds!