I saw JC in NJ in '87 or '88 with my 88 year old grandmother, my mom and my wife. Three generations. He started the show with a little 16mm projector with a B/W film of a train on a screen on the side of the stage. I remember the band started playing the signature "boom chica boom" sound and the audio was real low. I was instantly disappointed at the low volume.
Then Johnny walks out puts his Martin on and starts to sing. WHOAAAAA The whole room filled with his voice. I almost fell over. I remember the smile on everyones face at that moment. I always loved Johnny Cash, the good and all the bad.