Toa WS Series User manual

OPERATING INSTRUCTIONS
WIRELESS MICROPHONE SYSTEM
WS-422/432/402 series
CONTENTS
1. SAFETY PRECAUTIONS
2. GENERAL DESCRIPTION
3. FEATURES
4. HANDLING PRECAUTIONS
5. NOMENCLATURE AND FUNCTIONS
6. CHANNEL NUMBER SETTING by MANUAL
7. CHANNEL NUMBER SETTING by
INFRARED SYNCHRONIZATION
8. CHANNEL SCAN
9. BATTERY ALARM
10. OPERATIONAL HINTS
11. TROUBLESHOOTING
12. SPECIFICATIONS
Thank you for purchasing TOA's WS-422/432/402 series Wireless Microphone system.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

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1. SAFETY PRECAUTIONS
• Be sure to read the instructions in this section carefully before use.
• Make sure to observe the instructions in this manual as the conventions of safety symbols and messages
regarded as very important precautions are included.
• We also recommend you keep this instruction manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.
WARNING Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
When Installing the Receiver
• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as
doing so may result in fire or electric shock.
• Use the unit only with the voltage specified on the unit. Using a voltage higher than that which is specified
may result in fire or electric shock.
• Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid using the power
cord in close proximity to heaters, and never place heavy objects -- including the unit itself -- on the power
cord, as doing so may result in fire or electric shock.
• Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface.
Doing so may result in the unit falling down and causing personal injury and/or property damage.
• To prevent lightning strikes, install the unit at least five meters away from a lightning rod, and yet within the
protective range (angle of 45°) of the lightning conductor. Lightning strikes may cause a fire, electric shock
or personal injury.
• Since the unit is designed for in-door use, do not install it outdoors. If installed outdoors, the aging of parts
causes the unit to fall off, resulting in personal injury. Also, when it gets wet with rain, there is a danger of
electric shock.
When the Receiver is in Use
• Should the following irregularity be found during use, immediately switch off the power, disconnect the power
supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the
unit in this condition as this may cause fire or electric shock.
· If you detect smoke or a strange smell coming from the unit.
· If water or any metallic object gets into the unit
· If the unit falls, or the unit case breaks
· If the power supply cord is damaged (exposure of the core, disconnection, etc.)
· If it is malfunctioning (no tone sounds.)
• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they
accidentally spill into the unit, this may cause a fire or electric shock.
• Do not touch the unit's antennas during thunder and lightning, as this may result in electric shock.
When the Microphone or the Transmitter is in Use
• To prevent the electromagnetic wave from badly influencing medical equipment, mak e sure to switch
off the unit's power when placing it in close proximity to the medical equipment

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CAUTION
Indicates a potentially hazardous situation which, if mishandled,
could result in moderate or minor personal injury, and/or property
damage.
When Installing the Receiver
• Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.
• When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord
itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.
• When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the
power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock.
When removing the power cord, be sure to hold its plug to pull.
• The socket outlet shall be installed near the equipment and shall be easily accessible.
• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric
shock.
When the Receiver is in Use
• Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury
and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.
• Make sure that the volume control is set to minimum position before power is switched on. Loud noise
produced at high volume when power is switched on can impair hearing.
• Never open the unit case as there are high temperature parts inside the unit, which may cause a burn if
touched. Refer all servicing to your nearest TOA dealer.
• Use the dedicated AC adapter for the unit. Note that the use of other adapter may cause a fire.
• If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically.
In addition, insert the plug in the wall outlet securely.
• Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning
or leaving the unit unused for 10 days or more. A fire or electric shock may result.
• Any modifications made to this device that are not approved by TOA Corporation may void the authority
granted to the user to operate this equipment.
• Operation of this device is subject to the following two conditions: (1) this device may not cause interference,
and (2) this device must accept any interference, including interference that may cause undesired operation
of the device.
When the Microphone or the Transmitter is in Use
• When the unit is not in use for 10 days or more, be sure to take the battery out of the unit because battery
leakage may cause personal injury or contamination of environment.
• Make sure to observe the following handling precautions so that a fire or personal injury does not result from
leakage or explosion of the battery.
· Do not short, disassemble heat nor put the battery into a fire.
· Do not solder a battery directly.
· Be sure to use the specified type of battery
· Note correct polarity (positive and negative orientation) when inserting a battery in the unit.
· Avoid locations exposed to the direct sunlight, high temperature and high humidity when storing batteries.
• When the battery becomes inflated or leaks, discontinue use and replace with new one immediately.
CAUTION TO USER: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.

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2. GENERAL DESCRIPTION
The TOA’s WS-422/432/402 series W i r e l e s s M i c r o p h o n e s y s t e m is designed for use on the
UHF f r e q u e n c y band, and suitable for vocal or speech reinforcement applications. It features a
compander circuit which minimizes the influence of ambient noise.
Up to 16 User selectable channels that can be operated simultaneously. (depending on region)
Wireless handheld Microphone is a vocal microphone, employing a fine, powerful dynamic microphone unit.
Wireless belt-pack transmitter can use the supplied lavalier microphone and YP-MS4 series lavalier
microphones and headset microphones.
Dual channel wireless receivers are the rack-mountable diversity receivers to minimize drop-outs.
Dual channel wireless receiver employs the audio mixing output.
3. FEATURES
• An optimized PLL-synthesizer minimizes the oscillation frequency drift resulting from the ambient temperature
or voltage fluctuation.
• Power/Battery lamps indicate battery consumption to prevent the unit from malfunctioning when the battery
level remarkably decreases.
• Up to 10 hours of continuous use with single AA alkaline battery.
• Wireless handheld microphone employs a built-in antenna.
• The state of battery consumption can be displayed on t h e receiver's indicator.
• Quick channel scanning and auto channel set-up.
• Infra-red auto channel set-up.
• Compact size and high reliability.
4. HANDLING PRECAUTIONS
• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids,
as doing so may result in unit failure.
• Never open nor remove the unit case to modify the unit. Refer all servicing to your nearest TOA
dealer.
• Take care not to drop the unit onto the floor nor bump it against a hard object as the unit could fail.
• Do not place the unit in locations of high temperature (e.g. in an ill-ventilated car in summer) or
high humidity as the unit could fail.
• Do not use the unit in locations where it is exposed to seawater.
• Avoid using a mobile telephone near the wireless microphone in use. Noise could be picked up.
• W hen installing, keep the unit as far away as possible from fluorescent lamps, digital equipment,
personal computers, and other equipment that generate high frequency noise.
• To clean, use a dry cloth. When the unit gets very dirty, wipe lightly with a cloth dampened in a
dilute neutral cleanser, then wipe with a dry cloth. Never use benzene, thinner, or chemically-
treated cleaning towel.
• When using two or more wireless microphones, keep them at least 50 cm away from each other to
avoid malfunctions or noise.
• Keep the wireless microphone at least 3 m away from the receiving antenna. Using the microphone
in close proximity to the antenna could result in malfunctions or noise.

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5. NOMENCLATURE AND FUNCTIONS
Receiver : WT-412
[Front]
1. Power switch
Press this switch to turn the power on, and press it
again to turn the power off.
2. Channel setting key [SET]
Used to select the receiving channel (frequency).
(The receiver frequency must be identical to that of
the microphone.)
3. Infrared (IR) sync key [SYNC]
Press this switch to transfer the frequency to
the transmitter.
4. Reception lamps [A, B]
Either lamp A (left) or B (right) lights yellow
when the receiver matches a radio signal from the
transmitter.
5. AF peak lamp [PEAK]
Lights red when the receiver output level reaches
the point about 3 dB below the clipping level.
6. Infrared (IR) port [IR]
Transmit the infrared signal, when pressing
SYNC key,
7. Numerical LED display
Indicates the current channel number in normal
state.
In setting mode, the indicated channel number
flashes until registered.
8. RF signal level meter
Indicates the RF signal level.
RECEIVER 2RECEIVER 1

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[Rear]
9. Antenna input A, B
BNC connectors for antennas
Phantom powering for the external
antenna (optional)
For the wireless system covering a
relatively narrow area, use the supplied
two rod antennas, which should be set up
at 45° outwards from a vertical line.
10. DC input jack
Connect the power cable of the supplied
AC adapter to this jack.
11. Cable hanger
Hook the power cable onto this part.
12. AF output
Balanced XLR jack, male type (Pin #2: Hot).
LINE : 16 dBu / MIC : -20dBu (maximum)
13. AF output
Unbalanced phone jack
LINE : 10 dBu / MIC : -26dBu (maximum)
14. Volume control
Adjust the output level.
15. AF output level selector
Set the output level from the AF outputs by
selecting either MIC or LINE.
16. AF Mix / solo AF output 2 selector
Select the type of signal to be outputted
from the AF output 2.
MIX: Output the mixed signal of the receiver
1 and 2.
Tip The receiver gain is continuously adjustable. Should the receiver signal be too high, it will distort your
mixer / amplifier. If the signal is too low, the result will be an increase in general background noise.
Monitor the AF peak LED on the receiver, and adjust the volume control to achieve the best signal
quality.
RECEIVER 2 RECEIVER 1

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Handheld microphone : WM-422

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Belt-pack transmitter : WM-432
1. Power switch
Slide this switch towards “ON” to turn the
power on, and slide it again towards “OFF” to
turn the power off.

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2. Power / Battery lamp
A green LED lights as long as the battery
capacity is sufficient. When the battery
capacity becomes low, the green LED starts
to flash.
3. Numerical LED display
Indicates the current channel number in
normal state.
In setting mode, the indicated channel
number flashes until registered.
4. Channel setting key [SET]
Used to select the channel (frequency). (The
frequency must be identical to that of the
receiver.)
5. Infrared (IR) port
Receive the infrared signal from the receiver.
6. PAD switch (WM-422 only)
This switch is used for microphone sensitivity
adjustment.The sensitivity can be decreased
to “H” (0dB), “L” (-10dB).
Note Never position the transmitter antenna
directly against the body or hand. This
will have the effect of reducing the
operating range considerably.
7. Battery compartment
Insert an AA battery accordi ng to (+ ) and (–)
indications on the battery compartment.
Note: Turn off the power switch.
HDX: Hold the microphone body and rotate the
microphone grip counterclockwise to remove it.
BTX : Slide the battery cover in the
direction indicated by the arrow while pressing
on the cover with a thumb and hinge upwards.
8. MIC / Instrument switch (WM-432 only)
Slide this switch towards “MIC” to connect the
microphone, and slide it towards “INST” to
connect the instrument.
9. Audio level control (WM-432 only)
Adjust the audio level control using the
suppliedscrewdriver. The transmitter
sensitivity increases as the control is rotated
clockwise, and decreases as rotated
counterclockwise.
10. Input connector (WM-432 only)
3.5 mm jack socket, Connect the
microphone or the instrument cable.
11. Antenna (WM-432 only)
12. Clip (WM-432 only)
Clip the transmitter to a belt through the
belt clip.
13. Microphone (WM-432 only)
Note: Route the microphone cable so as to
avoid undue strain or friction. Try and keep the
microphone cable away from the antenna.
6. CHANNEL NUMBER SETTING by MANUAL
Step 1. Press the SET key for about 3 seconds until the displayed channel number blinks.
Step 2. Select the desired channel number with the SET key, and once the desired number is
reached, release the SET key. After about 5 seconds, the receiver automatically sets
channel and the blinking number turns to steady light.
Tip Continuous depression of the SET key permits the display to cycle through the channel
numbers.
On the receiver side, when the dot LED by the channel number LED is blinking at
selected channel number, this means that the channel isalready occupied.
Note Make sure that the transmitter is identical to the receiver in the channel number.
Should the microphone's setting differ from that of the receiver, the receiver will not receive the radio
signal from the transmitter.
On the transmitter side, the power switch turns on, the channel
number display turns on the light for about 20 seconds, and
then this display turns off the light. When SET key presses in
this condition, this display turns on the light for about 20
seconds.

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7. CHANNEL NUMBER SETTING by INFRARED SYNCHRONIZATION
Step 1. Confirm that the receiver is set to the c o r r ec t channel number and the
transmitter is turned the power on, then open the battery case on the
transmitter.
Step 2. Bring the IR port in the transmitter within 20cm of IR port on the receiver.
Step 3. Press the SYNC key on the receiver for about 3 seconds. When the
channel data has transmitted successfully from the IR port on the receiver,
the displayed channel number flashes.
Step 4. When the channel number is
synchronized successfully
between the receiver and the
transmitter, the displayed
channel number in the
transmitter blinks for about 3
seconds,
Note On the transmitter side, even if the
channel number display light turns
off, the display turns on again
when IR synchronization has
succeeded.
8. CHANNEL SCAN
Step 1. Press the SET key and the SYNC key at the same time for about 3 seconds.
Channel scan begins, and an idle channel number is indicated blinking on
the channel number display.
Step 2. After channel scan finishes, the idle channels are displayed in turn.
Step 3. Press the SET key and the SYNC key at the same time, the receiver sets the
idle channel automatically.
Note Before starting the channel scan, turn off all transmitters and any other
equipment that could cause interference during the setting or it may be detected during the channel
scan.
If there are no idle channels, the channel number is displayed blinking as a “-“.
And then the channel before starting the channel scan is set again.
Multiple System Setup
Set up each system one at a time, confirm each system is assigned a different channel, and leave the
transmitter powered on. Otherwise, the channel scan from the other receiver will not detect as the
occupied channel.
9. BATTERY ALARM INDICATON
• When the battery capacity in the corresponding transmitter becomes low, the dot LED of the numerical LED
on the receiver and the transmitter blinks. Replace the transmitter battery.
<=20cm

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10. OPERATIONAL HINTS
• The transmitter's service distance is 3 – 100 m. When the transmitter user moves in a facility, signal
dropouts (momentary losses of signal reception) may be encountered. These dropouts are caused by the
building's architectural design or materials which block the travel of or reflect the radio signal. If this occurs,
the user needs to change locations for better signal reception.
• Confirm the good line of sight between the transmitter and the receiver. Do not place large obstructions (e.g.
Concrete walls or large metal obstructions) between the transmitter and the receiver. In addition keep the
receiver away from metallic beams and obstructions as these can adversely affect the antenna pick-up
pattern and cause interference.
• The proper operation of your wireless system may be interfered with by other systems operating on the same
frequency. In such cases, change the operating frequency of your system.
• Hold the microphone within 20cm from the sound source. Move the microphone closer for a warmer sound.
And do not cover the grille with hand.
• Keep your mouth 15 – 20 cm away from the lavalier microphone for the best possible sound reproduction. In
case of the Omni-directional response, it will pick up sounds from all directions. It is better that the
microphone is placed closer to the sound source. Take care not to bring your mouth too close to the
microphone (within 5 cm) as this impairs speech clarity if you speak loudly.
• In case of the headset microphone, by adjusting the gooseneck, locate the microphone with the supplied
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.
11. TROUBLESHOOTING
Issue Condition Solution
No sound Receiver Reception lamps
[either A or B] or RF signal level
meter lights.
Confirm the connections of all
sound system or gain
Confirm the receiver volume
control.
Sound distorted AF peak lamp [PEAK] indicates. Confirm the transmitter gain or
PAD.
Confirm the receiver volume
control.
Confirm the receiver output level
match to the input level of the
mixer / amplifier.
Poor range or sound dropouts Receiver Reception lamps [A
and B] are flicking or RF signal
level meter turn light off.
The system must be set up within
recommended range.
The transmitter must be used in
line of sight from the receiver.
Check the channel scan, confirm
nearby source of interference,
and change the receiver and the
transmitter to a different channel.
Confirm the battery indication,
and replace the transmitter
battery.

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12. SPECIFICATIONS
System
Modulation Wideband FM
Frequency Range UHF band (506-538, 538-576, 576-603, 603-638, 638-671,
671-701, 720-758, 785-815, 819-832, 836-867, 925-937.5 MHz)
Tunable Frequencies 25 kHz Steps
Switchable Channels Up to 16 channels (depending on region)
Operated channels simultaneously Up to 16 channels (depending on region)
Pilot tone 32.768kHz
Total Harmonic Distortion < 1 % @1kHz
Function IR sync, Channel scan, Battery life information
Dynamic Range >96 dB(A)
Operating Range approx. 100 m
Operating Temperature Range -10°C to +50° C
Note: 506–603 MHz and 614–698 MHz for USA/Canada, 614–698 MHz for Brazil, 865–867 MHz for India,
925-937.5 MHz for Korea, 803-806 MHz for Thailand
TRANSMITTER
WM-422 WM-432
Microphone unit Dynamic with cardioid pattern
Supplied lavalier microphone and YP-
MS4 series lavalier and head set
microphone
RF Carrier Power 10 mW 10 mW
Audio Frequency
Response 80 - 15000 Hz 50 - 15000 Hz
Audio input Level 140 dB SPL (maximum) -6dBV (maximum), mic gain 0dB
Battery Life approx. 10 hours approx. 10 hours
Power Supply 1 AA size alkaline battery, 1.5 V 1 AA size alkaline battery, 1.5 V
Finish Resin, coating Resin, coating
Dimensions* 250 x φ55 mm 62 (W) x 100 (H) x 25 (D) mm (with clip)
Weight* 245 g (with battery) 85 g (with battery)
RECEIVER WT-412
Diversity Reception Antenna Diversity
Sensitivity 10uV at 45dBA S/N
Squelch (SQ) Tone SQ, Carrier SQ, Noise SQ
Audio Frequency Response 50 - 15000 Hz
Audio Output Level
(Maximum)
Balanced (XLR socket) : 16 dBu
Un-balanced (1/4" jack socket) : 10 dBu
Power Supply 11 - 18 VDC 500 mA
Dimensions* 210 (W) x 44 (H) x 202 (D) mm (excluding antenna)
Weight* S4.10-RX2 : 720g, S4.10-RX1 : 680g
0dBu=0.775V
Note: The design and specifications are subject to change without notice for improvement.
• Accessory
AC adapter
Microphone holder (For handheld microphone)
Screwdriver (For setting of Belt-pack transmitter)

FREQUENCY TABLE
Frequency Band Code
CH Code K3 D4 C1 C3 C6 C8 B6 F3 G3 G4 H3 L3 M3
0 925.300 863.150 794.250
803.350
819.150
822.100 748.100
633.475
606.100
616.775 576.150 538.525 506.250
1 926.550 863.725 794.600
803.975
819.400
822.550 748.600
634.025
606.550
617.725 576.850 539.075 506.575
2 927.950 864.150 795.050
804.725
820.500
823.400 749.250
634.700
607.600
618.100 577.475 539.600 507.100
3 928.600 864.850 795.600
805.225
821.150
823.975 750.900
635.500
608.250
619.650 578.200 540.575 507.450
4 931.450 854.900 796.500
805.600
821.775
825.000 751.800
636.425
609.200
620.475 579.150 541.475 508.400
5 932.400 855.900 797.700
803.400
822.275
825.950 753.325
637.775
610.600
621.025 580.550 542.850 509.875
6 934.600 856.175 799.250
803.775
822.650
826.700 754.725
639.625
611.450
621.775 582.350 544.675 510.925
7 935.425 856.575 800.900
804.275
820.150
828.100 756.000
641.225
612.600
622.400 583.925 546.275 513.250
8 925.750 857.950 801.600
805.025
820.775
829.200 756.775
642.275
613.350
622.825 585.000 547.375 514.825
9 926.950 858.200 803.350
805.650
821.900
830.025 757.800
644.800
613.900
633.375 587.525 549.875 518.225
A 928.350 858.650 804.450
803.300
822.275
831.375
749.775 647.575 610.250 624.425 592.350 552.625 521.200
b 929.000 859.500 803.150
803.925
822.775 826.775 751.625 652.250 610.900 626.550 597.200 557.300 526.250
C 931.825 860.400 803.525
804.675
820.525 828.975 752.975 660.750 606.950 627.425 601.475 565.800 531.375
d 932.800 860.900 804.575
805.175
821.400 830.075 754.575 662.900 608.500 628.550 604.525 567.950 533.775
E 935.000 861.200 805.075
805.550
822.400 831.375 756.300 666.225 609.500 629.400 571.225 537.550
F 935.825 861.750 805.750
822.900
831.875 757.225 670.225 611.600 630.025 574.275
Note: Frequencies that have same colored cells in each frequency band code are compatible.

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CERTIFICATIONS
In compliance with
EN 301 489-01:V1.9.2(2011-09)
EN 301 489-09:V1.4.1(2007-11)
EN 300 422-2 V1.4.1 (2015-06)
EN 62368-1:2014
CE Declaration of Conformity
2014/53/EU RED
2011/65/EU RoHS
Traceability Information for Europe
Manufacturer:
TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe,
Hyogo, Japan
Authorized representative:
TOA Electronics Europe GmbH
Suederstrasse 282, 20537 Hamburg, Germany
URL: www.toa.de

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URL: http://www.toa.jp/
133-07-00158-00