With classical music the correct volume is when you can hear the softest passages. I have left my volume control here and never change it no matter what music I play. So with some music like Jazz, Rock, Pop it does sound louder than usual but according to my RS SPL meter, never louder than 85 dB.
I have noticed that some visitors do listen at much louder levels and I have accomodated them by turning the volume up to something like 95dB which is more than twice as loud as my normal listening volume.
The simple answer is what you (don't forget the rest of the household and your neighbours) are comfortable with.
See this link http://www.dontlosethemusic.com/home/areyouatrisk/protectingyourself/ if your SPL meter shows anything above 85dBs.
I have noticed that some visitors do listen at much louder levels and I have accomodated them by turning the volume up to something like 95dB which is more than twice as loud as my normal listening volume.
The simple answer is what you (don't forget the rest of the household and your neighbours) are comfortable with.
See this link http://www.dontlosethemusic.com/home/areyouatrisk/protectingyourself/ if your SPL meter shows anything above 85dBs.