Back onto soundmen, one of the places big tuna occasionally play has a reasonable PA. The sound guy has his mixer in the bar area about 30feet from the front of the stage. So, does he listen to the sound and adjust it? Nope! he listens to the desk through headphones and bases his mix on that! consequently, the bass is always lost (it doesn't help that the house rig is an ashdown combo).
Graeme