John L. Butler ’62 ScM

John L. Butler ’62 ScM, of Cohasset, Mass.; Mar. 13. After graduating, he worked for various companies that were associated with air and underwater acoustic products, specifically related to the field of SONAR devices that transmitted and received acoustic energy. During this time, he completed a PhD in electrical engineering from Northeastern University. In the early 1970s his hobby was the design, building, and testing of home stereo loudspeaker systems, which grew into a position selling these systems to stereo Hi-Fi stores in the Boston area. In 1974, he opened Image Acoustics, Inc. and became a consultant in acoustics and sonar systems for the U.S. Navy and for companies that he had worked with prior. He coauthored a book titled Transducers and Arrays for Underwater Sound in 2007. He is survived by his wife, Nancy; two daughters; two sons; a daughter-in-law; two sons-in-law; 10 grandchildren; and a great-granddaughter.