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| WH20
Dynamic Headset Microphones |
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Product Code: wh20
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The Shure WH20 is a rugged,
lightweight, dynamic headset microphone that provides high-quality
voice pickup. It fits securely for active microphone users, such as
aerobics instructors and musicians, with low visibility for stage
appearances. Suitable for any voice communications application
where comfort and reliability are required.
The WH20 has a cardioid (unidirectional) pickup pattern. This
provides greater gain-before-feedback and isolation from ambient
noise and other unwanted sound sources, such as air-conditioning,
musical instruments and loudspeakers. A carefully shaped frequency
response includes a voice-frequency presence peak and a
low-frequency rolloff to compensate for the proximity effect
inherent in cardioid microphones during close-talk
operation. |
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| Features |
- Lightweight wireframe and
headband adjust for a secure, comfortable fit
- Extra-strong, small-diameter
attached microphone cable resists breakage
- Collapsible microphone boom for
easy storage and transportation
- Smooth, natural frequency
response comparable to high-quality dynamic hand-held vocal
microphones
- High input clipping level
eliminates overload distortion
- Reliable at temperature and
humidity extremes
- Supplied foam windscreen and
clothing clip
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| Specification |
- Type: Dynamic,
Close-Talking
- Frequency Response (at 8 mm): 50
to 15,000 Hz
- Polar Pattern: Cardioid
(unidirectional) response -- uniform with frequency, symmetrical
about axis
- Impedance: Microphone rating
impedance is 150 ohms (200 ohms actual)
- Output Level (close talked (at
12.5 mm (1/2 inch)) at 1,000 Hz)
- Open Circuit Voltage: -67.0
db/Pa (0.45 mV)
(1 Pa = 94 dB SPL)
- Hum Sensitivity: 38.4 dB
equivalent SPL in a 1 millioersted field
- Polarity
- WH20QTR as a wired
microphone:
- Positive sound pressure on
diaphragm produces positive voltage on tip with respect to sleeve
(ground) of microphone output phone plug connector.
- WH20QTR, WH20TQG used with Shure
Wireless Systems:
1/4-inch Phone Jack Receiver Outputs: Positive sound pressure on
diaphragm produces positive voltage on tip of receiver output
connector.
3-pin XLR Receiver Outputs: Positive sound pressure on diaphragm
produces positive voltage on pin 2 with respect to pin 3 of
low-impedance output connector, and on tip of Aux output
connector.
- WH20XLR as a wired
microphone:
- Positive sound pressure on
diaphragm produces positive voltage on pin 2 with respect to pin 3
of microphone output XLR connector.
- Environmental
Conditions
- Operating Temperatures: -18 to
60 degrees C (0 to 140 degrees F)
- Storage Temperatures: -29 to 74
degreesC (-20 to 165 degrees F)
- Humidity: 0 to
95%
- Cable: Attached 1.22 m (4 ft),
small-diameter, shielded, PVC-jacketed,
two-conductor.
- Cable Connector: WH20QTR:
Right-angle 1/4-inch phone plug
WH20TQG: Female 4 pin mini connector (TA4F)
WH20XLR: Three-pin XLR with detachable belt clip
- Construction
- Black thermoplastic housing;
stainless steel grille; black TEFLON®-coated stainless steel
wireframe; flexible plastic-clad monel gooseneck; rubber/nylon
elastic headband
- Net Weight (including
connector)
WH20: 63 g (2.2 oz)
WH20TQG: 63 g (2.2 oz)
WH20XLR: 98 g (3.5 oz)
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