Since to some posters, facts fall on "deaf ears" I guess "too loud" would be "subjective". To use todays youth as a baseline for noise control is absolutely rediculous, unless you happen to be a youth. BUT to most people with some minute amount of common sense too loud is easily determined. If it offends anyone, especially a neighbor, it is too loud, and as I said earlier in my post...
If your club doesn't have specific rules governing noise levels I suggest you do what our club members all do, and it involves something as simple as common sense. If it sounds too loud it probably is. Your fields neighbors are the ones you really want to shield from noise,