Toa WA-641, WA-641C Operating Instructions Manual

Operating Instruction Manual

MEETING AMPLIFIER

WA-641
WA-641C

For wireless applications, use the WTU-770 tuner module.

Contents

Features
Important
Each Part Names And Functions
Power Source
Mounting The Wireless Tuner Module
Operating The Wireless Microphone
Operating The Wired Microphone
Using External Equipment

Operating The External Speaker
Using The Aux Input
Using The Line Out Jack

1
1

2
4

5
6

7

7

8
8

Using The Cassette Deck

Each Part Name And Function
Playback
Fast Forward And Rewind
Recording

Tape Travel Modes
Cassette Tapes
Maintenance

Troubleshooting
Specifications

TOA Corporation

9
10
10
11
12
13
13
14
15

Features

A maximum of two wireless microphones can be
used by mounting the optional wireless tuner

module in unit.

Powerful sound thanks to a 20cm 2-way speaker.

Rated power output of 15 watts and maximum
power output of 20 watts.

Three-power-source operation; AC mains, R20P

dry cells (8 pieces) and external power supply.

Compartment wide enough to store a wired mic­rophone (with 5-meter cable) and two wireless

microphones.

Important

Power source should be AC mains, R20P dry
cells (8 pieces) or external power supply (12V
DC).

Do not install unit in a car parking under the

scorching summer sun or in locations where unit

is exposed directly to the sunlight. Also avoid in-

stalling unit close to heaters.

Tone control that always provides clear speech

or music.

AUX input control.

It is possible to use the wired microphone jack

and AUX jack for both balanced and unbalanced

type plugs.

A digitally controlled auto-reverse cassette deck
enables long, continuous play without turning the

tape. (WA-641C only.)

The cassette deck employs a recording circuit

with AGC function for easy recording of the

broadcast. (WA-641C only.)

When unit is unused, turn off power switch and
remove the power cable from an AC outlet. Only
setting the power switch to OFF keeps unit con­suming power of about 4 watts.

If hairpins, coins, etc. enter unit, this can involve

dangers of electric shocks or breakdowns. When

metallic stuff enters unit, be sure to set the pow­er switch to OFF immediately, remove power

cable and contact your nearest Toa dealer.

Take care that unit is not exposed to rain or that

raindrops should not enter unit as it will cause

electric shocks and breakdowns of unit.

Be sure to take hold of a plug to unplug the

power cable from an AC outlet, otherwise the

cable is disconnected.

When carrying unit from one place to another, do
not give strong shocks to unit nor handle it

roughly.

Use a dry cloth to wipe down the exterior of the

case. When the case is extremely dirty, clean

with a soft cloth slightly damped in a neutral
cleanser. Never use benzine or thinner as its use
can deform or discolour the case.

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Each Part Names And Functions

Carrying handle

Use this handle to carry unit from one place to another.

Note

This handle is only designed for carrying unit. Never use t he
handle for the purposes of permanent suspension of unit.

Power indicator

When the power switc h is set to ON, this lamp comes on.

Power switch

Press this switch to sw itch power on. To switch power off, press

the switch again.

Cassette deck (W A-641C)

Refer to page 9 for operation.

Line o ut jack (600 ohms, 0 dBV)

Use this jack when recording or connecting the external amplifier.

External speaker connector

This connector connects to the external speaker using an

attached plug.

Dry cell case

Eight of R20P (Size "D" ) is loaded. Observe polarities when load­ing dry cells.

External DC power input terminal

(220V/240V AC version)

* Set the voltage selector swi tch

to 240V when unit is operated

on 240V A C.

Wireless tuner module receptacle

A maximum of 2 wirel ess tuner modules (optional) can be
mounted in th is r eceptacle.

Tuner cover

Be sure to fix this cover in place after mounting the tuner module.

(WA-641C)

Notch fo r power cable passage

Tuner cover fixing screw

Frequency marker

Attach the frequency markers supplied with the tuner module.

Radio signal reception indicator

This lamp comes on when unit receives a signal f rom the wireless

microphone.

Wired microphone volume control.

Mic 1/Mic 2 volume control

This is a volume control f or both the wireless and wired mic­rophones.

Aerial

Fully extend this aerial when using the wireless microphone.

Mic 1 (wired mic) jack (600 ohms, -54dBV)

This jack can be used for both balanced and unbalanced type
plugs.

Mic 2 (wired mic) jack (600 ohms, -54dBV)

This jack can be used for both balanced and unbalanced ty pe
plugs.

Wired microphone jack (600 ohms, -54dBV)

This jack only connects to the wired microphone, and can be

used fo r both balanced and unbalanced plugs.

Note

No wireless microphone can be used when wired microphones
are plugged into Mic 1 and Mic 2 jacks. The volume control cor-

responding to each microphone is located immediately over the

jack.

AUX input jac k (500kohms, -20dBV)

This jack can be used for both balanced and unbalanced typ e

plugs.

AUX input volume control

Bass/treble control

Rotation of this knob in the counterclockwise direction reduces
the bass response and turning it clockwise reduces the high fre-

quency response.

Compartment cover

Accessories are provided on the reverse side of this cover.

External speaker

plug x 1,

Single pole x 1,

Fuse x 1,

External DC plug x 1

Compartment

Power cables, wi red microphone, wireless microphones, etc. are
stored in this compartment.

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Power Source

AC MAINS OPERATION

Plug the supplied power cable in an AC inlet, and
then plug it in an AC outlet,

Note

Unplug unit when not in use.

DRY CELL OPERATION

Use eight of R20P dry cells. Observe polarities

when loading them into the dry cell case. Re­moval of the power cable from an AC outlet after
loading the dry cell automatically switches over

the power source to the dry cell power supply.

Note

If unit is not in use for two weeks or longer,
take the dry cells out of unit to prevent
breakdowns the dry cell leakage causes.

OPERATION ON EXTERNAL 12V DC (OPER­ATIONAL ON 10V to 16V DC)

A storage battery may be used by means of a

plug for external power supply (standard acces­sory). In making its connection, observe correct

polarity.

INPUT TERMINAL FOR EXTERNAL

DC POWER SOURCE

(WA-641C)

Storage battery (12V DC)

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Mounting The Wireless Tuner Module

For tuner module, use the TOA model WTU-770

1. Remove the compartment cover.

2. Remove the tuner cover of the tuner receptacle.

3. Insert the tuner module into the lengthwise re­ceptacle as shown in Fig. 1, taking care so that
the module's top and bottom sides may not be
reversed. (See Fig. 1.)

Both the left and the right hand side recepta­cles correspond to Mic 1 and Mic 2, respec­tively.

Fig. 1. The WTU-770 module inserted into the receptacle

lengthwise.

4. Attach the frequency marker supplied with the
module to the corresponding volume control.
(See

Fig.

2.)

5. Fit the tuner cover in place after mounting the

tuner module. (See Fig. 3.)

* Be sure to fit the tuner cover in place to prevent

electric shocks or breakdowns of unit, caused

when metallic stuff enters unit.

Fixing screw

Fig. 3. Fitting the tuner cover

Note

Special cares are required so as not to insert

the tuner module into the wrong receptacle
nor attach the frequency marker to the wrong

volume control.

Fig. 2. Volume control on top panel

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