Dear JohnnyC,
I too have been frustrated about poor mixes at bands that I have really anticipated seeing in my concert-going career. I have railed against the obvious incompetence of soundmen and their lackadaisical approach to mixing these bands that we love, whose music, given a good mix, has the potential to lift us above the clouds, and given a bad mix, will just leave us feeling empty and frustrated.
But I'd like to point out that as I've been learning how to engineer sound myself, and have thus started paying more attention to what is going on behind the console, and I've got to say, live engineers cop it way harder than they deserve, an awful lot of the time.
Lets' get this clear: Nobody really cares about the sound engineer. If you know how sound waves work (and I'm assuming you have some knowledge of this), you'll know that the way something sounds, particularly in regards to the balance of frequencies, can differ wildly based on where you stand in a room, particularly if that room is an odd shape, or has, say, a ceiling with varying heights. You'd think a venue owner, interested in making sure his space has as good a sound as possible, would have a vested interest in making sure that the sound engineer is given a good place in the room to mix, a place where the sound he hears will be a reasonable approximation of the sound throughout the room.
This is rarely true. In almost every venue I've been to, the sound engineer has been tucked away in some little corner, a place where the stage is obscured by large poles, or he has a bulkhead or balcony overhead (an absolute nightmare in terms of sound), or some little alcove where not only is it almost impossible to move, but where the standing reflections from the surrounding walls will ruin any possible chance our intrepid soundfellow will have of ever actually interpreting properly what anybody else is hearing. Did you move around at all during the show? Have you talked to other people who were there? Was it consensus that this was a poorly mixed set?
Not to mention that the incompetent sound engineer in question was more likely than not, not a touring FOH man, hired by the band and carted around the country, mixing the band every night. He was more likely a local guy, perhaps someone who had no idea about who A Place To Bury Strangers are, and was simply trying his best to deal with what was undoubtedly some very hot levels coming down his console. To put it this way: Imagine being given an instrument that is not entirely unlike a guitar, but different enough to be confusing, and then told to produce an interesting and cohesive set of music right away. This is something what it is like trying to mix a band "cold."
Of course, I wasn't there so I'm really just giving you possible reasons that might make you a bit more sympathetic to the tribulations of the live engineer. He could've just been a shitty engineer.
Yours,
DD