Ask HN: How to effectively jam audio speakers?

My family lives in a medium sized Italian city, just in front of a cafe that has recently been bought by two guys that are notoriously part of mafia. They turned the cafe in a wild night club, playing music _very_ loudly all night long. Police and all sorts of organizations has been contacted without any success. One of the owners even hit a policeman without any consequences as everyone is scared of them. The club is in a densely populated urban area, with families with kids that now are having very hard time to sleep. In asking HN: is there any device/technique that I can use to jam their audio speakers to, hopefully, make them stop with this? Honestly I don’t know what else to do. The apartment of my family is about 30-60 meters from the speakers.
Story Published at: July 27, 2022 at 02:42PM