[Mike P.]

Hi Sam and welcome to the Shack! Sorry to heat about your situation. Personally, I would contact the owners of the building to determine what the rules are. If there is a rule that "if security can hear it from the hallway then it's too loud", then you're out of luck. If you can't negotiate a happy medium with your neighbor, then your options are to keep it turned down, wear headphones or move. Hopefully you and your neighbor can resolve this. Good Luck.