I have a Yamaha RX-V371 hooked up to my 2 Monitor 60s. These are the only 2 speakers I have. The comfort of say pending what I'm doing is this:
Wii - -40db area
PS3 - -30 db area
XBox - -30 db area
TV - -25 db all the way to -30 db pending the actual show
Now I've had times where my cat steps on my remote and it cranks up to +10, -05 area before I could quick grab the remote and turn it back down and this is exactly where this question comes in.
What is TOO loud(bad for speakers)? What is the good mid-range db of the speakers when it comes to keeping them safe/taking care of them(not popping them)? If the receiver volume range has any play in this answer, the receiver goes anywhere from -80(lowest) to I'm guessing +80(never even turned the volume that high to find out).