Great thread Andres,(although the title is not going to get you better sound if they read this in South America!)

As a one man acoustic act, I've had my share of horrible evenings because of bad sound....but when the sound is good, I make sure I let the audience know who the sound people are, by thanking them sincerely from the stage. One of the problems is that sound men and women earn their living with Rock Music, not folk. I think they often ride the highs and gain faders because that's what a normal rock audience wants.

I make it a point to talk to the sound people BEFORE going on stage for a check. I explain what instruments I'm going to use and what their characteristics are, regarding tone and potential feedback. I always carry a couple of Shure SM 58s as well, just in case. The only thing I WON'T do is use pickups on my instruments. Sometimes I wish I had though!

Rick