SPECIFICATIONS |
WL93 MICROPHONE (with standard test circuit shown in User Guide Figure 3) |
SM93 MICROPHONE (with preamplifier) |
Type |
Condenser (electret bias) |
Condenser (electret bias) |
Frequency Response |
50 to 20,000 Hz |
80 to 20,000 Hz, 12 dB/octave rolloff below 100 Hz |
|
Polar Pattern |
Omnidirectional, uniform with frequency |
Omnidirectional, uniform with frequency |
Output Impedance |
3000 ohms |
Rated at 150 ohms (90 ohms actual) Recommended minimum load impedance: 800 ohms < (May be used with loads as low as 150 � with reduced clipping level) |
Output Level (1 Pascal = 94 dB SPL) |
Open Circuit Voltage: -38 dBV/Pa (13 mV) |
Open Circuit Voltage: -43 dBV/Pa (7.0 mV) |
Output Clipping Level (at 1,000 Hz) |
0.25 V at 120 dB |
-18 dBV (0.13 V) minimum |
Total Harmonic Distortion |
Less than 1% at 120 dB |
Less than 1% at 120 dB |
Maximum SPL |
120 dB |
120 dB |
Dynamic Range (maximum SPL to A-weighted noise level) |
102 dB |
98 dB |
Output Noise (equivalent SPL) |
18 dB typical, A-weighted |
22 dB typical, A-weighted 26 dB, weighted per DIN 45 405 |
Hum Pickup (electromagnetic) |
N/A |
-4 dB equivalent SPL in a 1 mOe field (60 Hz) |
Signal-to-Noise Ratio |
76 dB at 94 dB SPL (IEC 651) |
72 dB at 94 dB SPL (IEC 651) |
Polarity |
Positive pressure on microphone diaphragm produces positive voltage on pins 3 and 4 with respect to pin 1 (ground)* |
Positive pressure on microphone diaphragm produces positive voltage on pin 2 relative to pin 3 of preamplifier output cable connector |
Recommended Operating Voltage |
2 to 10 V; 5 V nominal (pin 2 to pins 3 and 4) |
11 to 52 Vdc phantom. Protected against reverse voltage application |
Current Drain |
40 microA typical |
0.33 mA |
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) |
Operating Temperatures: �18 to 57 degrees C (0 to 135 degrees F) Storage Temperatures: �29 to 74 degrees C (�20 to 165 degrees F) |
Cable |
Black 1.27 m (4.17 ft), attached, two-conductor, shielded, terminated by miniature connector type TA4F (WL93T: Tan 1.27 m [4.17 ft]) |
Black 1.27 m (4.17 ft), attached, two-conductor, shielded, terminated by miniature connector type (TA4F) |
Case |
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|
Case |
Microphone: Black ABS thermoplastic case with stainless-steel-mesh grille |
Microphone: Black ABS thermoplastic case with stainless-steel-mesh grille Preamplifier: Steel case with non�reflective black finish, black�chrome belt clip |
Net Weight |
Microphone: 16 g (0.57 oz) |
Microphone: 16 g (0.57 oz) Preamplifier: 118 g (4.17 oz) |