I will be designing and building an enclosure to help quiet my PC which has become the start of my home theater. I have access to a professional shop since my friend's a contractor. I've just got to come up with designs and materials. I was thinking of using 3/4" MDF lined with dynamat or some type of sound dampener. (any suggestions?) The enclosure will also serve as a shelf unit on top, and have a hinged door to access the front of the case. I might use a lexan window for the front. (or other transparent material that's sound proof) The system housing will be large with ducts behind it for ventilation. I am just stumped on the design of making it quiet yet ventilated. Should the vent holes be on the bottom and have the enclosure raised? Or should the vent holes be on the rear of the box... I think if the holes are on the bottom the carpet helps absorb sound rather than reflecting it like a wall. I've already begun to make sketches so any suggestions on design or materials are much appreciated.