By Jeffrey McKnight
John G. “Jay” McKnight was an American businessman and engineer known for his significant contributions to the field of audio engineering. He co-founded Magnetic Reference Laboratory (MRL) and was president for most of its existence. McKnight worked extensively in the magnetic recording research group, stereo tape division, and professional audio division at Ampex. Notably, he was involved in the design of the Cinema-Scope reproduction system, developed several models, and created the “Ampex Master Equalization.” He authored numerous technical papers and received recognition, including the Audio Engineering Society’s Publication Award. He was also involved in helping design audio consoles, such as one for Les Paul’s Ampex eight-track recorder. In the early 1970s, he was a member of the “Advisory Panel on White House Tapes” investigating the Watergate scandal’s tape recordings. McKnight’s accomplishments include being a Fellow of the Audio Engineering Society, receiving multiple awards, and serving in various AES leadership roles, including President. His contributions spanned over 50 years, greatly advancing knowledge in magnetic recording and audio engineering. He is survived by his wife Brigitte, four adult sons, and five grandchildren.
