SHURE Pro Audio Equipment - Broadcast Microphone MC50B and MC51B Lavalier Microphones

Shure models MC50B (omni) and MC51B (unidirectional) are subminiature, electret condenser lavalier microphones. They provide uncompromised sound quality and high reliability with minimal visibility in sound reinforcement applications such as television broadcasting and stage performances. Despite its small size, the microphone's condenser element provides full, clear and natural reproduction of speech. Each microphone is supplied with two foam windscreens to minimize wind noise. The supplied mounting accessories consist of a lapel clip, a tie clip, a pin mount, and a magnet mount, giving the user a wide variety of options for placement.

The MC50 omnidirectional model is supplied with two types of equalization caps for high frequency response shaping. The mild boost equalization cap attenuates the natural high frequency peak of the microphone. The high boost cap does not attenuate the high frequency peak

The MC50 is available in a wireless version as the WL50.

MC50B Black, Omnidirectional
MC51B Black, Cardioid

Features

Extended frequency response with user changeable equalization caps for response shaping (omni only)
Low visibility with a variety of options for mounting
Low handling noise
Legendary Shure quality, ruggedness, and reliability
Includes In-line preamplifier and 5-foot (1.5m) cable with TA4F connector
All models include magnet mount, lapel clip, dual tie clip, pin mount, and two foam windscreens

Specifications

SPECIFICATIONS	WL50 Measured with test circuit (see User Guide)	WL50–LO Measured with test circuit (see User Guide)	MC50 Measured with RPM626 Preamplifier	WL51 Measured with test circuit (see User Guide)	MC51 Measured with RPM626 Preamplifier
Condenser (electret bias)	Condenser (electret bias)	Condenser (electret bias)	Condenser (electret bias)	Condenser (electret bias)	Condenser (electret bias)
Polar Pattern	Omnidirectional	Omnidirectional	Omnidirectional	Cardioid	Cardioid
Output Impedance	N/A	N/A	136 ohms actual (rated at 150 ohms)	N/A	136 ohms actual (rated at 150 ohms)
Recommended Min. Input Impedance	20 kilohms	20 kilohms	N/A	20 kilohms	N/A
Output Level	–45.0 dBV/Pa (1 Pa=94 dB SPL)	–54.0 dBV/Pa (1 Pa=94 dB SPL)	–41.0 dBV/Pa (1 Pa=94 dB SPL)	–50.0 dBV/Pa (1 Pa=94 dB SPL)	–46.0 dBV/Pa (1 Pa=94 dB SPL)
Maximum SPL	133 dB at 1% THD/ 20 kilohm load	142 dB at 1% THD/ 20 kilohm load	138 dB at 1% THD/ 1 kilohm load	138 dB at 1% THD/ 20 kilohm load	143 dB at 1% THD/1 kilohm load
Frequency Response	20 to 20,000 Hz	20 to 20,000 Hz	20 to 20,000 Hz	20 to 20,000 Hz	20 to 20,000 Hz
Dynamic Range	103.0 dB	103.0 dB	108.0 dB	103.0 dB	108.0 dB
Output Noise (equivalent SPL, A-weighted)	30 dB typical; 33 dB maximum	39 dB typical; 42 dB maximum	30 dB typical; 33 dB maximum	35 dB typical; 38 dB maximum	35 dB typical; 38 dB maximum
Signal-to-Noise Ratio	64 dB at 94 dB SPL	55 dB at 94 dB SPL	64 dB at 94 dB SPL	59 dB at 94 dB SPL	59 dB at 94 dB SPL
Power Requirements	+5 Vdc on pin 2, return on pin 1 (ground).	+5 Vdc on pin 2, return on pin 1 (ground).	11 to 52 Vdc (positive on pins 2 and 3, return on pin 1).	+5 Vdc on pin 2, return on pin 1 (ground).	11 to 52 Vdc (positive on pins 2 and 3, return on pin 1).
Current Drain	60–130 µA	60–130 µA	4.6 mA	60–130 µA	4.6 mA
Polarity—Positive pressure on the diaphragm produces a positive voltage at:	Pin 3 relative to pin 1 at the output connector of the microphone.		pin 2 relative to pin 3 of the output connector of preamplifier.	pin 3 relative to pin 1 at the output connector of the microphone.	pin 2 relative to pin 3 of the output connector of preamplifier.
Overvoltage Protection	N/A	N/A	+/- 75.0 Vdc maximum from pins 2 and 3 to pin 1.	N/A	+/- 75.0 Vdc maximum from pins 2 and 3 to pin 1.
Cap and Overmold Material	Polypropylene
Environmental Conditions	Operating Temperatures: –18 to 57 degrees C (0 to 135 degrees F) Storage Temperatures: –29 to 74 degrees C (–20 to 165 degrees F) Humidity: 0 to 95%
Packaged Weight	188 g (6.63 oz.)	188 g (6.63 oz.)	305 g (10.76 oz.)	188 g (6.63 oz.)	305 g (10.76 oz.)
Cable and Connector	1.5 m (5 ft.), small-diameter, shielded, with miniature female 4-pin connector (TA4F type). WL50X: 3 m (10 ft.) small-diameter, shielded, with stripped and tinned leads.	1.5 m (5 ft.), small-diameter, shielded, with miniature female 4-pin connector (TA4F type). WL50X–LO: 3 m (10 ft.) small-diameter, shielded, with stripped and tinned leads.	1.5 m (5 ft.), small-diameter, shielded, with miniature female 4-pin connector (TA4F type).	1.5 m (5 ft.), small-diameter, shielded, with miniature female 4-pin connector (TA4F type). WL50X: 3 m (10 ft.) small-diameter, shielded, with stripped and tinned leads.	1.5 m (5 ft.), small-diameter, shielded, with miniature female 4-pin connector (TA4F type).
Microphone and Preamp Dimensions	See User Guide
Net Weight	WL50: 21 g (0.7 oz.) with cable and connector. WL50X: 28 g (1.0 oz.) with 3 m (10 ft.) stripped and tinned cable.	WL50–LO: 21 g (0.7 oz.) with cable and connector. WL50X–LO: 28 g (1.0 oz.) with 3 m (10 ft.) stripped and tinned cable.	121 g (4.3 oz.) with cable, connector, and preamplifier.	WL51 21 g (0.7 oz.) with cable and connector. WL51X: 28 g (1.0 oz.) with 3 m (10 ft.) stripped and tinned cable.	121 g (4.3 oz.) with cable, connector, and preamplifier.

SHURE MC50B and MC51B Lavalier Broadcast Microphones

SHURE
MC50B and MC51B Lavalier Broadcast Microphones