The first time this happened to me I tried to delay the concert a few hours but the sound technician got a little nervous and wanted to grab me by the neck... It wasn't that big of a deal, was it? ???
Anyway, I've decided to ask you this silly question before playing with the health of others and with my neck, of course ?
Suppose you have your rigs ready for live. On the day of the concert in the sound check you realize that the general volume is higher than you had calculated and therefore some of your rigs (rigs with more volume) sound too high-pitched/shrill due to the effect of the Fletcher&Munson curve
Without time to carefully equalize, what do you think would be the fastest and most correct adjustments?
Lower definition, lower treble? Lower presence? A bit of everything?