HVAC work is done
dehumidifier was installed today and the remaining ductwork was completed.
i'm a bit bummed by the amount of space taken up in the basement for the dehumidifier ductwork. in fact, i'm too bummmed right now to take a picture and show people. but aesthetics aside, it's a pretty cool setup and this should help the studio stay drier than a mormon frat party (where "drier than a mormon frat party" is defined as 40% RH) year-round. i still have to play with all the fresh air intake stuff.
i'm still a tad concerned about the noise through the ductwork. even though the supply lines are insulated on the outside, nothing is lined on the inside. air on metal has a way of making vibrations and noise, so i've been trying to find a way to dampen the vibrations. lining the duct with standard materials isn't an option, since most linings are at least 1" thick. that kind of thickness would really cut into the surface area of the duct, which is something i really don't want.
this has taken me down the route of investigating liquid vibration dampeners. these spray or brush on to a surface and convert noise/vibration energy into heat energy. the two most promising products i looked at were quietcote and noisekiller. the two products are very similar in all regards, and i ended up going with quietcote for no other reason than the fact that they say it can be brushed on. i'm going to have to rip down a fair amount of non-flex ductwork, brush this stuff onto the insides, and put it back up.