Shure Corded Headset WH20 User Manual

Model WH20 User Guide  
©2005, Shure Incorporated  
27G3078 (Rev. 7)  
Printed in U.S.A.  
 
MICROPHONE PARTS  
The WH20 consists of the following parts:  
1. Microphone Cartridge  
2. Microphone Boom  
3. Hinged Housing  
4. Cable and Cable Retainer  
5. Wireframe  
6. Elastic Headband  
MICROPHONE PARTS  
FIGURE 1  
COLLAPSIBLE MICROPHONE BOOM  
The WH20 headset features a collapsible boom for shipment and storage. Before wear-  
ing the headset, unfold the boom until it snaps and locks into place. Refold for storage  
or transportation.  
WEARING THE HEADSET  
Place the headset wireframe around the head so that the wireframe and elastic band are  
horizontal across the back of the head and the ends of the wireframe fit over and in  
front of the ears. Position the elastic headband either above or below the wireframe to  
provide the greatest comfort and stability. The white “SHURE” should face outward.  
4
 
WEARING THE HEADSET  
POSITIONING THE MICROPHONE  
FIGURE 2  
FIGURE 3  
ADJUSTING THE HEADSET  
If the headset feels loose or uncomfortable, carefully bend the sides of the wireframe to make it  
tighter or looser (Figure 4A). The angle of the wireframe earpieces may also need adjustment  
(Figure 4B).  
Adjust the tension of the elastic headband across the back of the head by sliding it up or down  
the ends of the wireframe (see Figure 5).  
A
B
ADJUSTING THE WIREFRAME  
FIGURE 4  
5
 
ELASTIC HEADBAND ADJUSTMENT  
FIGURE 5  
POSITIONING THE MICROPHONE  
IMPORTANT: For maximum gain before feedback, position the gooseneck so  
that the microphone grille (silver side) is within 25 mm (1 inch) of the right corner  
of the mouth. Do NOT position it directly in front of the mouth (see Figure 3).  
USING THE CLOTHING CLIP  
The supplied spring-loaded clothing clip secures the microphone cable to the user's cloth-  
ing and keeps it from becoming entangled with the user's movements.  
OPERATION  
Connect the WH20 to the microphone input of a wireless microphone transmitter or a bal-  
anced wired microphone input.  
NOTE: The WH20 is a dynamic microphone and has inherently lower output  
than condenser microphones. The transmitter gain may need to be increased to  
compensate for the WH20's lower output.  
WINDSCREEN  
If breath noise or “popping” is audible over the sound system, install the supplied  
windscreen.  
WASHING THE FOAM WINDSCREEN  
The foam windscreen protects the WH20's microphone-element from dirt and moisture.  
When necessary, it can be removed and cleaned in a mild soapy water solution.  
IMPORTANT: Never clean the windscreen with any liquid solution without first  
removing the windscreen from the microphone boom.  
1. Gently pull the windscreen away from microphone.  
2. Immerse the windscreen in mild soapy water and gently squeeze it several times.  
3. Rinse the windscreen in clean water and dry it with a clean cloth or paper towel. Allow it to air-dry  
thoroughly.  
4. When the windscreen is dry, slide it over the WH20 microphone.  
6
 
WASHING THE ELASTIC HEADBAND  
The elastic headband can be removed from the wireframe and hand-washed in a mild soapy wa-  
ter solution. To remove and wash the headband, follow these steps:  
1. Remove the microphone cable retainer from the wireframe.  
2. Slide the elastic headband off the wireframe.  
3. Wash the headband and allow to dry thoroughly.  
4. Slide the headband around the wireframe to its original position. Reattach the cable with the plastic  
retainer.  
Note that the elastic headband supplied with the WH20 is not a standard size; head-  
bands purchased in stores are too long for this application.  
SPECIFICATIONS  
Type  
Dynamic, Close-Talking  
Frequency Response (at 8 mm)  
50 to 15,000 Hz  
+10  
0
–10  
20  
50  
100  
200  
500 1,000 2,000  
5,000 10,000 20,000  
Hz  
TYPICAL FREQUENCY RESPONSE  
FIGURE 6  
7
 
Polar Pattern  
Cardioid (unidirectional) response-uniform with frequency, symmetrical about axis  
ꢀꢄꢂƒ  
ꢀꢁꢂƒ  
ꢀꢁꢂƒ  
ꢀꢃꢂƒ  
ꢀꢃꢂƒ  
ꢇꢂƒ  
ꢇꢂƒ  
±ꢃꢂG%  
±ꢀꢁG%  
±ꢀꢂG%  
±ꢁꢈG%  
ꢆꢂƒ  
ꢆꢂƒ  
ꢁꢂꢂꢈ+]  
ꢀꢂꢂꢂꢈ+]  
ꢉꢂꢂꢂꢈ+]  
ꢅꢂƒ  
ꢅꢂƒ  
ꢂƒ  
TYPICAL POLAR PATTERNS  
FIGURE 7  
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  
Polarity  
WH20QTR as a wired microphone: Positive sound pressure on diaphragm produces pos-  
itive 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 produc-  
es 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.  
8
 
WH20XLR as a wired microphone: Positive sound pressure on diaphragm produces positive volt-  
age on pin 2 with respect to pin 3 of microphone output XLR connector.  
Environmental Conditions  
Operating Temperatures: -18° to 60° C (0° to 140°F)  
Storage Temperatures: -29° to 74°C (-20° to 165°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 wire-  
frame; 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)  
CERTIFICATION  
Eligible to bear CE Marking.Conforms to European EMC Directive 89/336/EEC. Meets applicable  
tests and performance criteria in European Standard EN55103 (1996) parts 1 and 2, for residen-  
tial (E1) and light industrial (E2) environments.  
REPLACEMENT PARTS  
Cable Connector (for WH20TQG only) ................................................................WA330  
Connector Belt Clip (for WH20XLR only) ........................................................ RK200BC  
Black Elastic Headband ....................................................................................... RK319  
Black Elastic Headband and Wireframe ............................................................ RPM600  
Microphone, Cable and Connector Assembly:  
1/4-inch (WH20QTR only) ................................................................................ RPM100  
Mini, four pin connector (WH20TQG only) ....................................................... RPM102  
XLR (WH20XLR only) ...................................................................................... RPM104  
Black Windscreens (2) and Clothing Clip ........................................................RK318WS  
9
 
CARTRIDGE  
1/4” CONNECTOR  
RED  
+
WH20QTR  
BLACK  
SHIELD  
XLR CONNECTOR  
CARTRIDGE  
1
2
SHIELD  
BLACK  
+
WH20XLR  
3
RED  
MINI FOUR-PIN CONNECTOR  
RED  
CARTRIDGE  
+
3
1
BLACK  
SHIELD  
WH20TQG  
4
2
WIRING DIAGRAMS  
FIGURE 8  
10  
 
SHURE Incorporated http://www.shure.com  
United States, Canada, Latin America, Caribbean:  
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.  
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Int’l Fax: 847-600-6446  
Europe, Middle East, Africa:  
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414  
Asia, Pacific:  
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055  
 

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