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.

The 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.

Key Features

• 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

Technical Specifications

Option
Includes right-angle 1/4 inch phone plug for unbalanced mic input
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
Rated at 150 ohms (200 ohms actual)
Output Level (close talked* at 1,000 Hz)
Open Circuit Voltage: . . . . . . . . . . . . . . . . . . . . . . . . . . -67.0 db/Pa (0.45 m)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Pa = 94 dB SPL
*At 12.5 mm (1/2 inch)
Hum Sensitivity
38.4 dB equivalent SPL in a 1 millioersted field
Environmental Conditions
Operating Temperatures: -18 deg to 60 deg
C (0 deg to 140 deg F)
Storage Temperatures: -29 deg to 74 deg C (-20 deg to 165 deg F)
Humidity: 0 to 95%