Sure. In theory you could build a free-standing room arround your system with double dry-wall, staggered studs, an exterior door, and mini-split system to keep it cool. Tear it down when you move.
In practice there's little you can do. Sound will take the path of least resistance so covering less than 100% of the surface where you're having problems doesn't help much. Stopping bass transmission is also much more difficult.
In practice there's little you can do. Sound will take the path of least resistance so covering less than 100% of the surface where you're having problems doesn't help much. Stopping bass transmission is also much more difficult.