| 1. | Shure Microphone 545SD User Guide GENERAL The UNIDYNE III Model 545SD is a dual impedance uni directional dynamic microphone Shipped connected for low impedance operation it features a silent magnetic reed on off switch The UNIDYNE III is a favorite for instrument pickup and re cording and can be used on lecterns for public address sys tems such as those used in political conventions and legisla tures convention halls hotels public auditoriums stadiums schools and churches FEATURES |
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