When Dave Hampton attended California State University, Dominguez Hills in the 1980s, the Los Angeles native, who was building missile guidance systems for Hughes Aircraft, was merely exploring his interest in music and recording. This summer, he will return to the campus to discuss his nearly 20-year career as a panelist in the upcoming “Music, Movies and More Symposium” on June 26. An audio engineer and designer of studios and touring rigs, he has worked with some of the biggest names in the music industry, including Prince, Herbie Hancock, Chicago, and Marcus Miller, whose 2001 album, “M2” won Hampton a Grammy Award.