Was playing a little dinner party on a large stage in vaulted room. Using a Behringer 410 pushed by a behringer bh4500 with a sansamp bddi (i know i know first rig), bass is Laguna Ocean. Had the cab up off the floor bout two feet. I did not mic the cab and had the volume fairly low. When playing alone things were fine. However, when playing together my sound would just fade away. If i turned amp up could hear less and less. Guys it was not a good feeling. did not want to have to play three hours like that. As luck would have it customer wanted very quiet background music so we all had to play VERY soft. Then I could hear myself. Was it the room or what? Sorry for large post. Thanks for your input.