Some recordings of 1812 will do that, in fact. This was 77 -> 107 but if you turn up the volume you'd get 85/115. Granted, 85 average is too loud for me, it's quite uncomfortable for most people in fact which is why it's no longer recommended by modern HT standards for small rooms.I listen to 80% classical and haven’t heard a piece that is 85db and hits 115db peaks.
maybe I’m not understanding what you are saying . Apologies.
Average to max of 30dB is quite rare though, it's true, and that range doesn't fall on a single speaker either. Multichannel has a much easier time with larger dynamic ranges which is probably why multichannel recordings also have significantly higher dynamic range in general.