Tell us about yourself!
The ONLY thing you do by knocking on the neighbors door and asking them to turn it down is to put a target on your head. Now they know who to retaliate when the cops inevitably get called (if they even show up on a noise complaint for that matter). People only understand violence and force. If you overwhelm them right away it will end. If you try and be nice, it will go on forever and you will most likely loose.