Forsythe Audio Systems (commonly referred to as Forsythe Audio) was an American manufacturer of professional audio equipment specifically, loudspeakers systems offering extremely high reliability and high fidelity for sound reinforcement professionals. All their designs were by Kenton Forsythe. It was located in Watertown, Massachusetts. The company was owned by Forsythe and Lewis Freedman, who previously started K&L Sound. The company initially operated out of Kenton's house and shop in Quincy then moved to a dedicated manufacturing and distribution building in Watertown.