The promethean activsoundbar provides a powerful high quality sound option for most classrooms and meeting rooms it can be used as the sole sound source for activboards without built in sound or to enhance the depth and range of sound from units such as the activpanel touch simply connect the activsoundbar to your existing display to create theater style sound in your classroom the activsoundbar can be used as the primary source of sound for promethean activboards without built in sound or t