The Shure 545SD-LC Classic Unidyne® Microphone is a versatile cardioid dynamic microphone designed for instrument pickup, recording, and public address systems. It features a silent magnetic reed on/off switch with lock-on option, dual-impedance operation, and an exceptionally uniform cardioid polar pattern to minimize feedback while ensuring clear, professional sound reproduction.
Classic Unidyne® Design – A favorite for instruments, recording, and public address systems
Uniform Cardioid Polar Pattern – Reduces feedback and captures clean audio
Silent Magnetic Reed On/Off Switch – With lock-on option for seamless operation
Selectable Dual-Impedance – Shipped in low-impedance mode, switchable to high-impedance
Cardioid Dynamic Microphone – Durable, reliable, and stage-ready
Frequency Response – 50 Hz – 15 kHz for natural sound reproduction
Weight: 255 g / 0.562 lbs
Transducer Type: Dynamic
Polar Pattern: Cardioid
Frequency Response: 50 Hz – 15 kHz
Sensitivity: Low: -58 dBV/Pa (1.30 mV), High: -35 dBV/Pa (17.60 mV)
Impedance: 100 Ω (dual-impedance selectable)
Output Connector: 3-Pin XLR
Switchable Low Cut: No
Attenuation Pad: No
Interchangeable Capsule: No
