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. |