I think what you are concerned with will be a common theme in a densely populated area. In the city, I have people above, below, and on both sides of me so I have 4 sets of neighbors. I have a Radio Shack SPL meter I keep handy when I want to keep myself in check. But I have to say that I do listen to music at lower levels, on my SPL meter if I break 80db from where I am sitting, that is getting loud for my tastes. I have had no complaints from anyone the 7 years I've been here.
I live in a pre-war building, so you have to realize that my high rise building is made of concrete blocks and plaster, so it's very dense. You will find modern construction is pretty lousy as they always are cutting costs to maximize profits.
The issues I have is keeping the sound out from the street 6 floors below. I am fortunate that I live on a quiet street and not an busy avenue. But my building is plagued with a subway that runs under the building, which I can hear subtly. It is a very low frequency but it doesn't affect my sound too much in terms of component feedback. I keep my components very well isolated with vibration control devices.
Just some different points of view from my experiences.
I live in a pre-war building, so you have to realize that my high rise building is made of concrete blocks and plaster, so it's very dense. You will find modern construction is pretty lousy as they always are cutting costs to maximize profits.
The issues I have is keeping the sound out from the street 6 floors below. I am fortunate that I live on a quiet street and not an busy avenue. But my building is plagued with a subway that runs under the building, which I can hear subtly. It is a very low frequency but it doesn't affect my sound too much in terms of component feedback. I keep my components very well isolated with vibration control devices.
Just some different points of view from my experiences.