I just listened with my meter(not RS and digital) out in front of me and the medial low range was 53 for the quieter moments and I went back to the peak points with my meter in max hold range and found the loudest point was 103db, a 50db range on that cd.
I watched it for max spl while noting the low average and the average high was about 95db. I would guess using 40db insted of 50 would be a closer reality as the sudden and brief 103 db would be in that clipped area that might not be noticed.
Using the 40 db range gave me an amp power rating of only 50W
while 2.5m @60SPL for 91 sensitivity.
