• JMI Super Foundation Bass

    Serial nos c.1001 - 1300

  • JMI Super Foundation Bass

    Serial no. 1090

  • VSEL SF Bass

    Serial nos 2000 - c. 2300

  • VSL SF Bass

    Serial nos 2300 - c. 2700

  • SF Bass cabs

    Details and pics

  • Circuit diagrams (schematics)

  • The RCA 2N3055 transistor