SHURE 545SD Classic Unidyne® Instrument Microphone
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.
Feature.
- Exceptionally uniform cardioid pattern minimizes feedback in PA applications
- Selectable dual-impedance operation
- Silent magnetic reed on/off switch with lock-on option
- Lavalier version available for use as a lectern microphone with A25D adapter, or as handheld microphone
Specs.
Transducer |
Dynamic |
Polar Pattern |
Cardioid |
Frequency Response |
50 Hz - 15 kHz |
Maximum Input Sound Level |
not specified by manufacturer |
Power Requirements |
None Dynamic, Requires No Phantom or Battery Power |
Output Impedance |
150 Ohms (250 Ohms actual) for Connection to Microphone Inputs Rated at 75 to 300 Ohms |
Output Connectors |
XLR-3M Type |
Dimensions |
6.2 x 1.25" (157 x 32mm) LxDiameter |
Weight |
12.5 oz. (354 g) |