Embraer Executive Aircraft has selected Alto Aviation of Leominster, Mass., as the baseline cabin entertainment audio system for all the Brazilian manufacturer’s Legacy 600s. The Alto system includes six mid/high enclosures, three subwoofers and two customized EQ amplifiers and weighs 21.4 pounds. New mid/high-frequency speaker enclosures were designed to fit within the PSU size constraints and a new subwoofer was designed to fit under a seat base for bass output in the mid-cabin area.