This has to be one of the funniest things that I have ever heard! To think that you would really go to the expense of buying your own decibel meter to prove a point is just too funny. I have never been to an Illinois campmeeting, so I have no dog in the hunt. I do know that, according to OSHA, one can sustain 85db for 3 hours without any affect on your hearing at all. As a matter of fact. city traffic registers at about 85db. You can sustain 100db for a steady 45 minutes before there is any affect at all. For those who like quiet church services, you will get thirty minutes of silence in heaven. After that, John described it as a sound so loud that it sounded like a bowl of living waters. So, enjoy your 30 minutes! Not funny in the least. Your post would be funny if the situation were not so serious. It is not unusual for a musician and sane sound operators to own, and hopefully use, decibel meters. In any case, one is not a major investment. I do not think it is quite at the 100db level but one the two reasons I no longer care to attend the S. GA camp meeting is the sound level. The second is the loud noise that is offered as a music program there. Even with reduced already damaged hearing it is misery in motion. I do not need to have a sound level that is deafening to damage my hearing further.I am dubious of your claims and believe that any time spent hearing such high sound levels as describe in this posting can potentially damage hearing. Probable more so for already diminished hearing.