The predecessor to the SM57, the 545SD Classic Unidyne® Instrument Microphone is a dual-impedance, unidirectional, dynamic microphone.
Shipped connected for low-impedance operation, the 545SD features a silent magnetic reed on/off switch with lock-on option. A favorite for instrument pickup and recording, the 545SD can also be used on lecterns in public address systems.
Shure 545SD-LC Features
- Exceptionally uniform cardioid pattern minimizes feedback
- Selectable dual-impedance operation
- Silent magnetic reed on/off switch with lock option
- Cable not included
- 535SD-LC classic Unidyne dynamic microphone1
- Mic clip1
- Transducer TypeDynamic
- Polar PatternCardioid
- Frequency Response50 Hz - 15 kHz
- Rated Output Impedance150 ohms (250 ohms actual)
- Output Level, Open Circuit Voltage at 1kHz
- L: -58.0 dB (1.3 mV)
- H: -35.0 dB (17.6 mV)
- Switchbuilt-in magnetic reed on/off switch with lockplate
- Cartridge Shock Mountinternal rubber vibration isolator
- Swivel Adapterpositive action, adjustable through 90° from vertical to horizontal, permits easy removal for handheld use, suitable for mounting on stand with 5/8 in.-27 thread
- Housingchrome-plated die casting with ARMO-DUR grille and stainless steel screen
- Weight (without cable)9 oz
