SHURE
 WL51 Wireless Systems

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WL51 Professional Cardioid Subminiature Lavalier Microphones


Product Code: wl51

 The WL51 lavalier microphone series sets a new standard for miniature microphones. Visually unobtrusive, the WL51s 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. Designed for applications that require minimal visibility without compromising sound quality, these microphones are available individually, as well as with the Shure UHF, UC, SC and LX Wireless Systems.
Features
  • All models include foam windscreen, swiveling lapel clip, dual tie clip, pin mount, magnet mount
  • Subminiature size (5.8 mm diameter x 11 mm height)
  • Electret condenser cartridge
  • Unidirectional pattern
  • One termination: 4-pin mini connector (fits directly into Shure wireless transmitters)
  • High Boost equalization caps included for optimal clarity and response
    Provides a 10 dB boost centered at 12 kHz
    Used in applications that require a chest-worn microphone
  • Black and white models available
  • All models include magnet mount, lapel clip, dual tie clip, pin mount, and two foam windscreens and carry case
  • Frequency response: 20-20,000 Hz
  • Low visibility with a variety of options for mounting
  • Low handling noise
  • Legendary Shure quality, ruggedness, and reliability
     
Specification
 
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).		 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.		 121 g (4.3 oz.) with cable,
connector, and preamplifier.

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