Downloads: Classic Microphones Product Brochure (PDF)

: Dynamic Microphone Type
Simple, rugged diaphragm/coil. handles extreme volume levels without distortion.
: Cardioid Polar Pattern
Picks up the most sound in front of the microphone and some from the sides. Less susceptible to feedback in high volume environments.
: Tailored Frequency Response
Smooth, extended response. Tuned to accentuate specific types of instruments or voices.

545SD Classic Unidyne® Instrument Microphone

Form Factors

Handheld

Model Lines

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

Dynamic

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)

	Name	Availability
	A25D Break 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.	Where To Buy
	A25DM 10 pack of A25D microphone clips	Where To Buy
	A26M Allows two Shure SM57, Beta 57A, or 545 Series microphones to be placed vertically on a standard microphone stand.	Where To Buy
	A2WS Locking Microphone Windscreen reduces unwanted breath and wind noise. For use with Shure SM57 and 545 Series microphones. Available in black and gray.	Where To Buy
	A55HM Shock Stopper Isolation Mount/Swivel Adapter, Half Mount, for SM57, SM58, Beta 57A, Beta 58A, Beta 87A, Beta 87C or any Shure tapered handle mic.	Where To Buy
	A55M Isolation mount and swivel adapter securely attaches Shure models SM57, SM58, SM86, Beta57A, Beta58A, Beta87A, and Beta87C to standard microphone stands.	Where To Buy
	R45 Direct replacement cartridge for Shure 545 Series and the PE54 series microphones.	Where To Buy
	S37A Desk stand, gray finish, for use with various Shure swivel adapters and shock mounts.	Where To Buy