Dynamic Headset Microphones
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By: Shure
Microphones, Headphones & Wireless systems
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The Shure Specialty to General Communications Microphone Series
WH 20 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.
The WH-20 cardioid (unidirectional) pickup pattern provides greater gain-before-feedback and isolation from ambient noise and other unwanted sound sources. A carefully shaped frequency response includes a voice-frequency presence peak and a low-frequency roll-off to compensate for the proximity effect inherent in cardioid mics during close-talk operation.
→ Lightweight wireframe and elastic 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
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 |
Polarity 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 |
Polarity 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) |
Environmental Conditions Storage Temperatures | -29 to 74 degreesC (-20 to 165 degrees F) |
Environmental Conditions 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 |
Cable Connector WH20TQG | Female 4 pin mini connector (TA4F) |
Cable Connector 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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Audio Video Supply Inc.
4542 Ruffner St. Suite 220
San Diego, CA 92111
Prices and specifications subject to change without notice.