My neighbour has begun using a home cinema system and there has been a dramatic increase in noise since it has been installed. The bass rumbles and other frequency noise can easily be heard above our TV etc.
They are unfortunatly hostile, selfish and insular and a polite request for a reduction in volume would probably make them turn it up!
The party wall is 4" blocks ( the unplasterd ones in the loft look preety light and porus) with a 2" to 3"cavity.
Also there is a fireplace in the room with the same next door. How do I define the entry points for the noise and then stop it.
Any advice would be most welcome.