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. |
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