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Model WH20 User Guide
©2005, Shure Incorporated Printed in U.S.A.
27G3078 (Rev. 7)
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GENERAL The Shure Model WH20 is a rugged, light-weight, 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 WH20 is suitable for any voice com- munications application where comfort and reliability are required. The WH20 has a cardioid (unidirectional) pickup pattern. This provides greater gain-before-feed- back and isolation from ambient noi
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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
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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
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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 Conn
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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 supplie
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Polar Pattern Cardioid (unidirectional) response-uniform with frequency, symmetrical about axis 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 m
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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) W
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CARTRIDGE 1/4” CONNECTOR + RED WH20QTR BLACK SHIELD XLR CONNECTOR CARTRIDGE 1 2 SHIELD + BLACK WH20XLR 3 RED MINI FOUR-PIN CONNECTOR CARTRIDGE RED + 1 3 BLACK WH20TQG 4 SHIELD 2 WIRING DIAGRAMS FIGURE 8 10
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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
