545SD-LC (PZA)
Shure 545SD-LC Classic Instrument Microphone The predecessor to the SM57, the 545SD Classic Unidyne® Instrument Microphone is a dual-impedance unidirectional dynamic microphone. Wired for low-impedance operation, the 545SD features a silent magnetic on/off switch with locking option. A favorite for instrument pickup and recording, the 545SD can also be used on music stands in public address systems. The 545SD is a dual-impedance unidirectional dynamic microphone. Wired for low-impedance operation, it features a silent magnetic on/off switch. The Classic Unidyne is a favorite for instrument pickup and recording, and can be used on music stands in public address systems such as those used in political conventions and legislatures, convention halls, hotels, public auditoriums, stadiums, schools, and churches. Optimized performance in speech processing and computer speech recognition applications. Smooth frequency response with excellent fidelity across the voice range. The cardioid pickup pattern and close-talk operation keep unwanted signals and background noise at low levels. Consistent output over the voice spectrum during close-talk. The humbucking coil minimizes undesirable hum effects, such as CRT interference. The low-impedance design allows for long cable runs in extreme hum fields. The small, unobtrusive design does not interfere with CRT visibility. Rugged and reliable for years of continuous operation.