There has been some discussion relating to band organ volume lately
and many good points have been made.
I would add another, and that is that many band organs I have heard --
I would say most -- are not properly maintained. It doesn't take much,
but a couple pipes, particularly reed pipes which are not in tune and
working properly, makes an organ hard for me to listen to for any
period. This, I suspect, may translate as "too loud" for some people.
Organs must be treated so as to make sure there are no ducks, geese,
car horns, or screecher monkeys in there.