This is as passive-aggressive as anyone can get. This person took the time to make this long, elaborate note just to inform his inconsiderate neighbor how annoying his new speakers are. The length and thought behind this note makes it hard to ignore, and the only question that remains is whether this self-centered neighbor even understood this passive-aggressive note, or whether he thinks this is a genuine compliment on his amazing new speakers?
While it’s hard to miss the sarcastic tone as you go on reading line after line, if this person was selfish enough to use his speakers in the middle of the night, who knows what more he’s capable of? At least they gave it their best shot at being passive-aggressive, before they go on shouting and yelling.