Wow...I feel like an old fart....probably because I am an old fart...
The majority of the house is on the main floor. The loft (my space) is upstairs but fairly centered over the family room but cannot be closed off with doors...sound travels throughout the house pretty well.
Wife home...music typically peaking around 70dB.
Wife not home...music typically peaking in the low to mid 80s...depends on the music. A few like Jeff Beck's
blow by blow I crank into the 90s.