There is a very cost effective product if you want to crank up the music and don't want to hear it on the first floor of the house. Green Glue. It comes in large caulk tubes and you put it on between 2 pieces of 5/8" sheetrock. You can certainly use 1/2" but 5/8 is better. Do a search on "green glue" and the website has a tutorial and lots of testimonials. I used it in 2 work applications with noisy tenants (I manage properties) and it worked great in both instances.
I just did a partial renovation of my basement and now I have to do some room treatments as I have a wood burning stove with a large floor to ceiling brick surround in need of severe dampening. The solution so far has been to drape the fireplace surrounding area with a lot of large nylon painters drop cloths when I want to do any serious listening.
I just did a partial renovation of my basement and now I have to do some room treatments as I have a wood burning stove with a large floor to ceiling brick surround in need of severe dampening. The solution so far has been to drape the fireplace surrounding area with a lot of large nylon painters drop cloths when I want to do any serious listening.