There are a few things that you can do in order to stop your neighbor’s subs from bothering you. The first thing that you can do is talk to your neighbor and see if they are willing to turn down the volume or even stop using their subwoofer altogether.
If your neighbor is not receptive to this idea, then you can try soundproofing your own home. This will help to reduce the amount of sound that you can hear from their subwoofer. Finally, if all else fails, you can always call the police and file a noise complaint.