The idea was to build a small HT/Media room for 2-6 (limited space) people in the basement. Since it was built in a townhouse (condo) which is ~20 years old we wanted to add soundproofing as well.
For the soundproofing I used ASC ISO Wall.
For the acoustical treatment I used ASC studio sets (the best most price/performance value).
Thank you! Yes I did it myself - fortunatelly I had friends to help me, especially at the the start since I had 0 building experience. It took me 1 year working on week ends and nights. I have pictures for all stages of the project - want to describe on what I have done. There are some things I would have done different, but there are findings that that would be intereresting to others as well ...
