found: Wikipedia, January 19, 2024(Acoustic Research was a Cambridge, Massachusetts-based company that manufactured high-end audio equipment; founded in 1954 by Edgar Villchur and his student Henry Kloss; in 1967, Acoustic Research was bought by Teledyne, Inc., and for the next 22 years it continued development and operations in Cambridge as Teledyne Acoustic Research; the company was sold to Jensen Electronics in 1989, and in 1996 it was sold to Recoton Audio corporation; in 2003, Audiovox (now Voxx International), acquired the US audio operations of Recoton; until mid-2014, AB Tech services provided maintenance of AR Speakers, which was taken over by CM Tech Support in July 2014)