Toa wh 4000a

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toa wh 4000a

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z TOA INSTRUCTION MANUAL

HEADSET MICROPHONE WH-4000A
WH-4000H

Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.

1. GENERAL DESCRIPTION

The TOA WH-4000A and the WH-4000H are a headset microphone of a cardioid pick-up pattern.
The WH-4000A features sweat-proof design with an adjustable fixing band exclusively designed for aerobics
instructors. The WH-4000H is suitable for speech reinforcement applications.

2. NOMENCLATURE

[WH-4000A] Adjustable band [WH-4000H]

Frame Frame
Gooseneck Windscreen Gooseneck Windscreen
Plug lock Plug lock

Microphone Microphone

3. HOW TO USE

- By adjusting the gooseneck, locate the microphone with the supplied owearing the headset
windscreen in front of your mouth, and position it 3 - 5 cm away from your
mouth for the best sound reproduction. When the microphone is too close
to your mouth or you speak too loud, speech clarity will be impaired,
making it hard for the audience to hear announcements.

- Place the headset frame around the head so that the frame and
adjustable band are horizontal across the back of the head and the ends
of the frame fit over. (See the figure on the right.)

4. SPECIFICATIONS (WH-4000Al-4000H)

Type Electret condenser type Position the adjustable band

Directivity Unidirectional either above or below the frame
. . . _ to provide the greatest comfort

SenSItIVIty -66 dB :3 dB (0 dB _ 1 V/O.1 pa, 1 kHz) and stability.

Terminal 03.5 mm plug

Cord Length 1.3 m

Weight 50 9 (cable included)

Note: The design and specifications are subject to change without notice for improvement.

TOA Corporation T22?§7_22TY€8