Loudness is certainly subjective. 80 dB is loud, but not LOUD. If I were trying to have a conversation, 75 dB is too loud. For rock 80 dB is mezzo-piano. It's all relative.
I have thought about taking an SPL meter to the symphony many times, never remember to do it. I suspect Mr.T is correct that the level won't exceed 90 in the back row, perhaps peaks will register in the mid 90s mid orchestra and only the front few rows will get anything approaching 100.
I put on the Sheffield Drum & Track CD yesterday. Cranked it until a few peaks were just tipping an amp into clipping. Peaks still didn't exceed 100 dB at listening position and it was good'n loud— almost as loud as a drummer sitting in front of me.
I have thought about taking an SPL meter to the symphony many times, never remember to do it. I suspect Mr.T is correct that the level won't exceed 90 in the back row, perhaps peaks will register in the mid 90s mid orchestra and only the front few rows will get anything approaching 100.
I put on the Sheffield Drum & Track CD yesterday. Cranked it until a few peaks were just tipping an amp into clipping. Peaks still didn't exceed 100 dB at listening position and it was good'n loud— almost as loud as a drummer sitting in front of me.