Almost every day. I live in a semi, and the speakers are situated on the wall furthest away from the neighbouring wall. Also the house was built in the mid- fifties, so the dividing walls are double thickness brick construction which helps a lot. I do consider the neighbours and do ask from time to time if they hear anything (at times prompted with - "please be honest") but they always so no they don't. I have very good reasons for this, as I was on the recieving end "of music played loudly" from a next door neighbour at a previous house I lived in, of a more modern construction I'd hasten to add. However, I have always adopted the "live and let live" atitude, I don't mind if someone wants a loud party/play their music loud/barbeque etc. There are some obvious provisios to this. Not too late at night, every night, especially weekday nights and not all / everyweek-end.
Nad 370, Nad 270, Mission M35's, Sony cdp 300.