Introduction to Live Sound – Fall, 2019

Register HERE!

Dates: Saturday, October 26th, 2019 9:00 AM – 3:00 PM

Location: Freight & Salvage Coffeehouse, 2020 Addison St, Berkeley, CA 94704


Learn the basics of live sound with an industry veteran at a professional music venue (Freight & Salvage Coffeehouse) with a top-notch sound system designed and installed by Meyer Sound Labs of Berkeley! Spend a day focusing on live sound techniques while working with a live band to learn:

  • The components of a professional live sound system
  • How to set optimum levels and understand signal flow of a live sound system
  • How to conduct a professional sound check
  • How to prepare for a show and set up a live band on stage
  • How to mix and use EQ and effects (signal processing)
  • How to optimize a system to work with a venue’s acoustics

Instructor and Venue

Heidi Trefethen is a sound engineer, multi-instrumentalist and producer with over 25 years of experience in the industry. As a live sound engineer, she has worked with Shawn Colvin, Joan Baez, Herb Alpert and Lani Hall, Odetta, Dar Williams, Jonatha Brooke, Peter and Paul of Peter, Paul and Mary, Don McLean, Joan Armatrading, Buffy Sainte-Marie, Holly Near, and Jane Siberry.

She teaches Music Production, Mixing, Mastering and Recording, Film Scoring, and Audio For Visual Media at the SFJAZZ Digital Lab.

Heidi is also a professional French Hornist who has performed with the Los Angeles Philharmonic, Il Teatro dell’Opera di Roma, in Rome, Italy, the JazzUp Festival in Viterbo, Italy, the SFJAZZ Monday Night Band, the Sacramento Philharmonic, Opera and Ballet, Silicon Valley Symphony, North State Symphony, Santa Rosa Symphony in the San Francisco Bay Area. She has performed and given master classes in Italy, Thailand, Vietnam, Israel, Turkey and Guatemala.

Freight & Salvage Coffeehouse (Berkeley Society for the Preservation of Traditional Music) is a nonprofit arts organization dedicated to promoting the understanding and appreciation of traditional and roots music. The Freight’s superb sound system is composed of speakers and amplifiers exclusively designed and installed by Meyer Sound Labs of Berkeley.


Women’s Audio Mission’s courses focus on increasing the gender balance in audio production and technology sectors since less than 5% of the population employed in these sectors are women. There are limited spots available in our classes and they often sell out, so we ask that if you are not woman-identified (transgender or cisgender), non-binary or gender non-conforming, that you reconsider enrolling in the class. We will not turn anyone away, but please be mindful that if you take up a seat in class, that is one less woman or non binary-identified individual that we can serve. We thank you for your understanding in advance and for joining us in our mission to advance women and girls in music production and the recording arts.