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Shure 545SD-LC Classic Unidyne Instrument Microphone

Catalog Number: 545SD-LC

Price: $108.00

Out of Stock

This item is not in stock. You may order it in any quantity and we will send it as soon as it arrives from the publisher. Backorders average 1-2 weeks, but may take longer for imports, items from small publishers, and temporarily out of print titles.


545SD Classic Unidyne® Instrument Microphone

Form Factor
  • Handheld
Model Line
  • Classic

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.

  • 545SD-LC Cable not included
    • Exceptionally uniform cardioid pattern minimizes feedback
    • Selectable dual-impedance operation
    • Silent magnetic reed on/off switch with lock option
  • Type
    Frequency Response
    50 to 15,000 Hz
    Polar Pattern
    Cardioid (unidirectional)--uniform with frequency, symmetrical about axis
    Dual. Microphone rating impedance is 150 ohms (250 ohms actual) for connection to microphone inputs rated at 19 to 300 ohms and "High" for connection to high-impedance microphone inputs. Wired for low impedance as supplied.
    Output Level
    LOW @ 1,000 Hz: Open Circuit Voltage* -58.0 dB (1.3 mV); HIGH @ 1,000 Hz: Open Circuit Voltage* -35.0 dB (17.6 mV) *0 dB = 1 volt per Pascal (1 Pa = 94 dB SPL)


    Model: 545SD-LC
    Manufacturer: Shure