The Sanyo SX-660 is a loudspeaker model manufactured by Sanyo from 1985 to 1988 in Japan. It was priced around 350 DM per piece at launch. This model is part of a broader series that includes various other speakers like the SX-17 E, SX-234, SX-330, SX-340, SX-350, SX-550, SX-1100, and SX-M 38. The S...