The horn (amplifier) is visible. Immediately *identifiable (recognizeable)*, it serves as a visual element that indicates that in this area there is a broadcast of sound. The sound is potentially audible at 30 meters and the level may be adjusted (by remote control, furnished with the sculpture). The sculpture is self-sufficient in energy (solar-powered). It… Poursuivre la lecture MACROSILLONS // dispositif // system description