TOA WH-4000A Users Manual

Thank you for purchasing TOA's Headset Microphone.
Please carefully follow the instruction in this manual to ensure proper use of your equipment.

WH-4000A
WH-4000H

HEADSET MICROPHONES

INSTRUCTION MANUAL

1. GENERAL DESCRIPTION

The TOA WH-4000A and WH-4000H are headset
microphones of a cardioid pick-up pattern, featuring
a lightweight design. Besides, the WH-4000A is
equipped with an adjustable band to fix the headset
on your head.

2. NOMENCLATURE

[WH-4000A]

[WH-4000H]

• Wearing the headset

Position the adjustable band
either above or below the
frame to provide the greatest
comfort and stability.

3. PRECAUTION

Be sure to keep the windscreen attached to the
microphone while in use.
Doing otherwise allows sweat or spit to directly get
into the microphone, possibly causing its failure.

5. SPECIFICATIONS

Type Electret condenser type
Directivity Unidirectional
Sensitivity –66 dB ± 3 dB

(0 dB = 1 V/0.1 pa, 1 kHz)

Maximum 120 dB SPL
Input Level

Cord Length 1.3 m (4.27 ft)
Terminal ø3.5 mm (0.14 ") monaural plug
Finish Adjustable band (WH-4000A only):

EVA, black

Frame:

Stainless, black (silicon rubber)

Gooseneck:

Iron, chrome-plated, black
(shrink tube)

Weight 50 g or 1.76 oz (cable included)

Note: The design and specifications are subject to change

without notice for improvement.

133-07-221-9G

4. HOW TO USE

• By adjusting the gooseneck, position the
microphone with the supplied windscreen slightly
off the front of your mouth, and 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.

URL: http://www.toa.jp/

This product is an expendable item. No warranty is provided for any trouble except incipient failure.

Adjustable band

Frame

Gooseneck Windscreen

Plug lock

Microphoneø3.5 mm

(0.14 ")

Plug lock

ø3.5 mm
(0.14 ")

Frame

Gooseneck Windscreen

Microphone