Shure manual Specifications, WL50 WL50-LO MC50 WL51 MC51

SPECIFICATIONS	WL50{	WL50–LO{	MC50}	WL51{	MC51}
Type	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 W actual (rated at 150 W)	N/A	136 W actual (rated at 150 W)
Recommended Min. Input	20 kW	20 kW	N/A	20 kW	N/A
Impedance
Output Level	–45.0 dBV/Pa	–54.0 dBV/Pa	–41.0 dBV/Pa	–50.0 dBV/Pa	–46.0 dBV/Pa
	(1 Pa=94 dB SPL)	(1 Pa=94 dB SPL)	(1 Pa=94 dB SPL)	(1 Pa=94 dB SPL)	(1 Pa=94 dB SPL)
Maximum SPL	133 dB at 1% THD/	142 dB at 1% THD/	138 dB at 1% THD/	138 dB at 1% THD/	143 dB at 1% THD/
	20k W load	20k W load	1 k ohm load	20k W load	1 k ohm load
Frequency Response	20 to 20,000 Hz (see Figure 5)
Dynamic Range	103.0 dB	103.0 dB	108.0 dB	103.0 dB	108.0 dB
Output Noise	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
(equivalent SPL, A-weighted)
Signal-to-Noise	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
Ratio
Power Requirements	+5 Vdc on pin 2, return on pin 1	+5 Vdc on pin 2, return on pin 1	11 to 52 Vdc (positive on pins 2	+5 Vdc on pin 2, return on pin 1	11 to 52 Vdc (positive on pins 2
	(ground).	(ground).	and 3, return on pin 1).	(ground).	and 3, return on pin 1).
Current Drain	60–130 mA	60–130 mA	4.6 mA	60–130 mA	4.6 mA
Polarity—Positive pressure on	Pin 3 relative to pin 1 at the output connector of the microphone.		pin 2 relative to pin 3 of the output	pin 3 relative to pin 1 at the	pin 2 relative to pin 3 of the output
the diaphragm produces a			connector of preamplifier.	output connector of the	connector of preamplifier.
positive voltage at:				microphone.
Overvoltage Protection	N/A	N/A	±75.0 Vdc maximum from pins	N/A	±75.0 Vdc maximum from pins
			2 and 3 to pin 1.		2 and 3 to pin 1.
Cap and Overmold Material	Polypropylene
Environmental Conditions	Operating Temperatures: –18_to 57_ C (0_ to 135_ F) Storage Temperatures: –29_to 74_ C (–20_to 165_ 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	1.5 m (5 ft.), small-diameter,	1.5 m (5 ft.), small-diameter,	1.5 m (5 ft.), small-diameter,	1.5 m (5 ft.), small-diameter,	1.5 m (5 ft.), small-diameter,
Connector	shielded, with miniature female	shielded, with miniature female	shielded, with miniature female	shielded, with miniature female	shielded, with miniature female
	4-pin connector (TA4F type).	4-pin connector (TA4F type).	4-pin connector (TA4F type).	4-pin connector (TA4F type).	4-pin connector (TA4F type).
	WL50X: 3 m (10 ft.)	WL50X–LO: 3 m (10 ft.)		WL50X: 3 m (10 ft.)
	small-diameter, shielded, with	small-diameter, shielded, with		small-diameter, shielded, with
	stripped and tinned leads.	stripped and tinned leads.		stripped and tinned leads.
Microphone and Preamp	See Figures 2 and 3
Dimensions
Net Weight	WL50: 21 g (0.7 oz.) with cable	WL50–LO: 21 g (0.7 oz.) with	121 g (4.3 oz.) with cable,	WL51 21 g (0.7 oz.) with cable	121 g (4.3 oz.) with cable,
	and connector.	cable and connector.	connector, and preamplifier.	and connector. WL51X: 28 g	connector, and preamplifier.
	WL50X: 28 g (1.0 oz.) with 3 m	WL50X–LO: 28 g (1.0 oz.) with		(1.0 oz.) with 3 m (10 ft.)
	(10 ft.) stripped and tinned	3 m (10 ft.) stripped and tinned		stripped and tinned cable.
	cable.	cable.

Certification: Eligible to bear CE marking. Conforms to European EMC directive 89/336/EEC. Meets applicable test and performance criteria in European EMC standard EN 55103 (1996) parts 1 and 2, for residential (E1) and light industrial (E2) environments.

{Measured with test circuit (see Figure 1). } Measured with RPM626 Preamplifier.

1.0 uf

20 mm DIA.

14 mm

1.52 m (5 ft.) for WL50/MC50 and WL51/MC51 Series

3

(.55 in.)

1

(.79 in.)

5.8 mm (.23 in.)

4

2

19 mm DIA.

100 k

(.75 in.)

20 k

3.04 m (10 ft.) for WL50X/WL51X Series

5 Vdc

99 mm

(3.89 in.)

5.8 mm (.23 in.)

STANDARD TEST CIRCUIT

PREAMPLIFIER DIMENSIONS

MICROPHONE AND CABLE DIMENSIONS

FIGURE 2

FIGURE 3

FIGURE 1

Mild Boost

150o

180o

150o

150o

180o

150o

dB

Equalization Cap

IN

High Boost

120o

120o

120o

120o

RESPONSE

o

Equalization Cap

o

90o

90o

RELATIVE

90

–15 dB

90

–15 dB

–20 dB

–20 dB

60o

–10 dB

60o

60o

–10 dB

60o

–5 dB

30o

30o

–5 dB

30o

30o

0

Omnidirectional

0

250 Hz

CARDIOID

2500 Hz

On Axis

500 Hz

6400 Hz

1000 Hz

TYPICAL POLAR PATTERN

180o

Off Axis

10000 Hz

dB

FIGURE 5

IN

RESPONSE

RELATIVE

TRIDGE

IMPEDANCE

CONDENSER

IMPEDANCE

RED

+5 Vdc

CONVERTER

CONVERTER

CARTRIDGE

CONDENSER CAR-

D

RED

+5 Vdc

G

D

Audio Out

G

BLK

+

BLK

AUDIO OUT

S

SHIELD

1 3

GROUND

S

SHIELD

4 2

Cardioid

TYPICAL FREQUENCY RESPONSE

FIGURE 4

WL50X SERIES MICROPHONE WIRING DIAGRAM

WL50/MC50 and WL51/MC51 SERIES MICROPHONE

(UNTERMINATED)

WIRING DIAGRAM WITH TA4F CONNECTOR

FIGURE 6

FIGURE 7