My first thought, is you must be playing your music way to loud for anything but maybe some bass to pass through 6”-8” of concrete or it’s traveling through the walls. However, my subwoofer used to rattle the windows and AC vents until I bought four washing machine isolation feet from Amazon for like $20 and an 18”X18” piece of floor tile to go on top of my carpeted floor. Worked like a charm. I did something similar with my speakers. I bought some Isoacoustics Gaia isolation feet and couple pieces of 1” thick granite, also on top of the carpeted floor . They made a huge difference!
