Jensen Loudspeakers is a company that manufactures speakers in many different models and sizes. Originally located in Chicago, Illinois, the company built a reputation during the 50s and 60s providing speakers used mainly in guitar and bass amplifiers. Although the American company is long out of business, "reissue" guitar speakers are currently made in Italy by SICA Altoparlanti and distributed in the United States by CE Distribution. Jensen and Rola were, for a time both under common ownership (subsidiaries of the Muter Co.), and shared various design similarities. Their 8" and 15" baskets appeared to utilize the same tooling. Rola locations took over Jensen product manufacturing when the Chicago plant closed.
The current Fender Twin Reverb amp uses two 12" Jensen C-12K speakers.