@dain … “However, if you actually attend a concert, it’s not really that loud. ”
It depends on where you sit and in which concert hall. I have had season tickets in the 7th and 8th row center in a very good concert hall for a decade and the crescendoes peak above what my ears could comfortably handle. So, I have not measured the spl… but I am sure it is over 100db.
My seats are under the microphones used when recording a concert to produce an album. It is plenty loud.