Oh man I have a solution but it takes some help.
In the mid 80's my brother and I shared an apartment. The neighbor upstairs would call the security when we watched TV or played my Heresy's with a mere 70 Watts SAE amp. We had to endure their constant foot steps. We got real tired of it so we tagged teamed them. One of us would go outside and watch for security to pull in the complex while the other jammed out. When Security did pull in we would turn it off and turn on a movie and play chess. Security would knock and notice the absence of loud noise. We would answer and they started to write it off as a problem complainer. After a while they quit responding. I then borrowed my friends Cornwalls and a Carver cube. We laided them on their backs facing up. I inserted a RCA sound effect cd and proceded to play SR71 flyovers, Harleys, Chainsaws, and helicopters. The loudest was a 707 taking off. They moved out that month!!!