Well, this was a complete remodel of a building, with sound isolation (room built within a room, with some kind of "springiness" to avoid rumblings of trucks and the like). The HVAC was installed new, a rooftop unit, specifically designed to make no noise in the room. I don't know any of the details, I just know it works, very well. IOW, such things are definitely possible. Dealing with an existing system on a limited budget, well, that's another story. Certainly there are motors and bearings that are quieter than others, and how they are mounted makes an enormous difference. Some hair driers are made that are much quieter than the norm. So maybe there is a retrofit possible that would improve things significantly without redesigning the system (and getting the fan out of the room). Regards, Fred Sturm University of New Mexico fssturm at unm.edu On Sep 25, 2008, at 3:30 PM, Tim Coates wrote: > Hi Fred, > > Yes, the fan is in the room. I'm not quite sure I'm understanding > the situation you mention concerning the recording studio. Was the > room built with the fan in the room and excellent sound baffling > kept the room silent? > > Thanks, > > Tim Coates
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