Sound Proof???

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.

Get new neighbors.

Buy/rent a house. Bass is unstoppable.

Case in point is that you can hear a "boom car" from a block away.

Hi 6month,

If you properly decouple the speakers from the floor a great deal of the directly-coupled mechanical vibration now being sent to your neighbors will be reduced. Another benefit is that vibration will not be able to travel through the floor from the speakers towards your audio equipment.

Best Regards,

Barry Kohan

Disclaimer: I am a manufacturer of vibration control products.

Likely not.

I used to live in a condo and never met my neighbor until I added a sub......... met him 20 minutes later!