One of my best friends Kevin Church had the privilege of working as an assistant engineer at Crystal Studios during the era when Stevie Wonder recorded “Songs in the Key of Life”
WIKI – Songs In The Key Of Life
This is about all I can find about Crystal Studios. Amazing technical and historical article!
http://www.soundoctor.com/crystal/
Of special interest to audiomeasurements.com is Barry’s explanation for how to manage speakers using “white noise” to aim and adjust speakers.
This is the article:
Barry Ober – Using White Noise to Aim and Adjust Speakers
Barry Ober – Using White Noise to Aim and Adjust Speakers PDF