According to our records, this business is located at 543 Blackhawk Blvd. in South Beloit (in Winnebago County), Illinois 61080, the location GPS coordinates are: 42.4892211 (latitude), -89.0384414 (longitude). Leonhardt Engineering Co is categorized under Electrodynamic or Magnetic Loudspeakers (SIC code 3651). Known organization owner is Arthur Leonhardt. You can contact the company by phone at (815) 389-2523.