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.
- Exceptionally uniform cardioid pattern minimizes feedback
- Selectable dual-impedance operation
- Silent magnetic reed on/off switch with lock option
|Frequency Response||50 to 15,000 Hz|
|Polar Pattern||Cardioid (unidirectional)--uniform with frequency, symmetrical about axis|
|lmpedance||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)|
Additional specifications are available in the user guide.
A25D Microphone ClipBreak resistant microphone clip that securely mounts the SM58, SM57, SM87A, Beta 87A, Beta 87C and all other microphones with 3/4-inch and larger handles to a standard microphone stand.
A25DM A25D Microphone Clip (10 pack)10 pack of A25D microphone clips
A26M Dual Microphone MountAllows two Shure SM57, Beta 57A, or 545 Series microphones to be placed vertically on a standard microphone stand.
A2WS Locking Microphone WindscreenLocking Microphone Windscreen reduces unwanted breath and wind noise. For use with Shure SM57 and 545 Series microphones. Available in black and gray.
A55HM Snap-in "Shock Stopper" MountShock Stopper Isolation Mount/Swivel Adapter, Half Mount, for SM57, SM58, Beta 57A, Beta 58A, Beta 87A, Beta 87C or any Shure tapered handle mic.
A55M Shock Mount Microphone ClipIsolation mount and swivel adapter securely attaches Shure models SM57, SM58, SM86, Beta57A, Beta58A, Beta87A, and Beta87C to standard microphone stands.
R45 Cartridge for 545 Series and PE54Direct replacement cartridge for Shure 545 Series and the PE54 series microphones.
S37A Desk StandDesk stand, gray finish, for use with various Shure swivel adapters and shock mounts.
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Service & Repair
Detailed policy information regarding customer service numbers, service modifications, and replacement parts.