Tweaks when building a listening room?

Thanks everyone for the input. I used every one's suggestions in some way or another. I'll give an update when the room is complete.
Thanks again,
Marc

Angle the ceiling?

Instead of 2 x 1/2 inch drywall, I suggest 2 x 5/8 inch. I also strongly suggest gluing the drywall to the studs & between the layers,in addition to screwing. Tape and mud the 1st layer before applying the second on an offset of course. The difference is not subtle and the cost is not prohibitive. Install soundproofing, tape and a trim piece along the gap where the drywall does not touch the floor. I would want a spare 20 amp line as well as normal 15 amp outlets per code.
I envy you-have fun.

If you need isolation of the sound from adjoining rooms, I suggest you read the information on the Green Glue web site.

http://www.greengluecompany.com/

Their testing indicates that two layers of drywall are essentially no better than one when trying to reduce sound transmission through a wall. The articles on this site are very informative.

Very...like its not the thickness or fastening,but the pliability.I wonder if 3/8" would nt be the best as it would bend easier and thus absorb more than any other???