If you're worried about sound then be sure to use R-8 flex duct everywhere. Don't skimp and use uninsulated or even the R-6. That extra bit of insulation will really help cut down on noise. Also consider installing your fans within a box or rubbermaid bin packed with old blankets. Cut holes on either end for your R-8 ducting to run into and mount to your fan and stuff all that stuff around the fan and ducting. Lastly have your fan on a speed adjuster as I'm sure you're aware to dial up or down your fan speed as necessary. You will be amazed at how much of a difference in noise reduction these steps will do for you.
I apologize if I'm already preaching to the choir though.
Chuck these interior decorating notions and get on with the show!
I apologize if I'm already preaching to the choir though.
Chuck these interior decorating notions and get on with the show!