Sound proofing floor

Are they "hearing" the bass or midrange/treble as well? It doesn't make sense that all frequencies are passing through unless the whole floor is hitting a resonance with your music. It's pretty hard to stop the long bass wavelengths. Isolating your floor from the concrete is not practical, but would help immensely. Have you set the volume to where you like it and gone downstairs to hear it for yourself? That might help develop a solution.

sometimes bass and other times music I'm told, not very loud, I turned up music 1 at a time and had her call when she could hear it. It was a little louder than I normally play it, but some songs can play a little louder than others and some the bass pops in. I'm just looking to decrease the sound traveling through the floor a little.

Just ordered the 1lb MLV, we'll see ho it goes.

Time for  headphones 🎧 

I pulled up the carpet and pad and put down the 1lb MLV, then put the pad and carpet back down. I've been playing the music a little lower too. Seen my neighbor today and she stated she hasn't heard my music at all since. Now I just have to work with her and find out what volume I can turn it too before she can hear it.