In 1969 C.G. Conn Ltd. was sold under bankruptcy to the Crowell-Collier MacMillan Company. In 1970, the corporate offices were moved to Oak Brook, Illinois, Conn Keyboards was moved to Carol Stream, Illinois and their piano manufacturing operation sold. Also in 1970, Conn's Elkhart manufacturing facilities were sold to Selmer (USA) and Coachmen Industries. Brasswind manufacturing moved to Abilene Texas and woodwind production was moved from Nogales, Arizona to Nogales, Mexico. A precipitous drop in product quality followed those moves, initiated as cost-cutting measures by executives not familiar with instrument production, and destroyed whatever was left of Conn's reputation in the wind instrument market. Conn introduced the modernized 7M alto saxophone; it soon acquired the same reputation for poor quality as the other "MexiConns," sold poorly, and was discontinued. In 1970 Conn also started the Conn Guitar Division, operating out of Oak Brook, Illinois, contracting the manufacture of a new line of acoustic guitars to Tokai Gakki in Japan. Conn's acoustic guitar business ended in 1978. In 1979 Conn tried to enter the highly competitive electric guitar market, introducing a line of some original model electric guitars, and some copies of existing popular brands. (see History of Conn Guitars).