
Shure 545SD-LC Cardioid Dynamic Microphone
Capture Classic Sound with the Shure 545SD-LC MicrophoneThe Shure 545SD-LC Cardioid Dynamic Microphone delivers legendary Unidyne performance with selectable dual-impedance operation and a silent on/off switch. Ideal for instrument pickup, recording, and public address systems. Type: Cardioid D...
*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Capture Classic Sound with the Shure 545SD-LC Microphone
The Shure 545SD-LC Cardioid Dynamic Microphone delivers legendary Unidyne performance with selectable dual-impedance operation and a silent on/off switch. Ideal for instrument pickup, recording, and public address systems.
- Type: Cardioid Dynamic Microphone
- Impedance: 150 Ohm
- Polar Pattern: Unidirectional
- Switch: Silent magnetic reed on/off switch with lock option
Features:
- Optimized for voice processing and computer voice recognition
- Smooth frequency response with excellent fidelity in the voice range
- Constant output over voice spectrum
- Humbucking coil minimizes hum effects
- Low-impedance design permits long cable runs
- Rugged and reliable construction
Specifications:
- Microphone Form Factor: Microphone Only
- Item Dimensions (L x W x H): 10.1 x 5 x 3.4 inches
- Power Source: Corded Electric
- Signal-to-Noise Ratio: 78 dB
- Hardware Platform: PC
- Number of Channels: 1
- Item Weight: 15.2 ounces (0.43 Kilograms)
- Connector Type: LC
- Special Feature: Clip
- Compatible Devices: Personal Computer
Included Components:
- Microphone
- Microphone Clip (Shure A25D)
Key Features
Exceptionally uniform cardioid pattern minimizes feedback
Selectable dual-impedance operation
Silent magnetic reed on/off switch with lock option
The predecessor to the SM57
A favorite for instrument pickup and recording, the 545SD can also be used on lecterns in public address systems
Includes Shure A25D microphone clip
Specifications
Pros & Cons
👍 Pros
- The Shure 545SD-LC features an exceptionally uniform cardioid pattern, which effectively minimizes feedback in live or recording settings.
- It offers selectable dual-impedance operation, providing versatility for connecting to various audio equipment.
- Equipped with a silent magnetic reed on/off switch, the microphone allows for quiet muting during performances or presentations.
- The on/off switch includes a lock option, preventing accidental power changes during use.
- This microphone comes with a Shure A25D microphone clip, offering a convenient mounting solution right out of the box.
👎 Cons
- As the "predecessor to the SM57," it might not incorporate the latest advancements or acoustic refinements found in newer models.
- The selectable dual-impedance operation, while versatile, may require user knowledge to set correctly for optimal performance with different devices.
- The microphone's primary applications for instrument pickup and public address systems might mean it's not optimized for all vocal types or recording scenarios.
- Specific technical specifications like frequency response, sensitivity, or max SPL are not detailed, making it harder to assess its precise audio capabilities.
- The mention of it being a predecessor could imply that replacement parts or service might become less available over a very long period.