Toa WA-1830M-AS, WA-1830MB-AS Instruction Manual
WIRELESS MEETING AMPLIFIER
Thank you for purchasing TOA’s WA-1830M-AS and WA-1830MB-AS Wireless Meeting Amplier.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
WA-1830M-AS
WA-1830MB-AS
INSTRUCTION MANUAL
1. SAFETY PRECAUTIONS
............................................................................................................ 3
2. GENERAL DESCRIPTION
.......................................................................................................... 4
3. FEATURES
....................................................................................................................................... 4
4. HINTS FOR BETTER USE
.......................................................................................................... 5
5. NOMENCLATURE AND FUNCTIONS
..................................................................................... 5
6. ABOUT THE OPERATING MP3
................................................................................................. 9
7. ABOUT THE POWER SOURCE
................................................................................................ 10
7.1. Using AC Power Supply ................................................................................................................. 10
7.2. Using Battery .................................................................................................................................. 11
7.2.1. Battery Type ......................................................................................................................... 11
7.2.2. Battery Installation (Remove) .............................................................................................. 11
7.2.3. Install New Battery (WA-1830M-AS only) ............................................................................ 11
7.2.4. Power Supply Switching ...................................................................................................... 11
7.2.5. Guide Lines on Battery Recharge Times ............................................................................. 11
8. USING A WIRED MICROPHONE
.............................................................................................. 12
9. USING A WIRELESS MICROPHONE
...................................................................................... 12
9.1. Tuner Unit Installation .................................................................................................................... 13
9.2. Frequency Setting .......................................................................................................................... 13
10. ABOUT EXTERNAL EQUIPMENT
........................................................................................... 13
10.1. When Using External Speakers ................................................................................................... 13
10.2. When Using an External CD Player ............................................................................................. 14
10.3. When Using an External Amplifier ............................................................................................... 15
11. TROUBLESHOO TING
................................................................................................................... 15
12. SPECIFICATIONS
.......................................................................................................................... 16
TABLE OF CONTENTS
2
3
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.
WARNING
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
• Warning: To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture. Do not
place objects lled with liquids such as vases on the apparatus.
When Installing the Unit
• Use the unit only with the voltage specied on the unit. Using a voltage higher than that which is specied may
result in re 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 re 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 ve meters away from a lightning rod, and yet within the
protective range (angle of 45°) of the lightning conductor. Lightning strikes may cause a re, electric shock or
personal injury.
When the Unit 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 re 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.)
• Do not insert nor drop metallic objects or ammable materials in the ventilation slots of the unit’s cover, or the
MP3 player, as this may result in re or electric shock.
• Do not touch a plug during thunder and lightning, as this may result in electric shock.
• To prevent a re or electric shock, never open nor remove the unit case as there are high voltage components
inside the unit. In addition, modifying the internal parts or circuit may cause the unit to be against the
regulations in your country.
Refer all servicing to your nearest TOA dealer.
CAUTION
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
When Installing the Unit
• 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 re or electric shock.
4
• 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 re or electric shock.
When removing the power cord, be sure to hold its plug to pull.
• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heat-
ers, or in locations generating sooty smoke or steam as doing otherwise may result in re or electric shock.
• The socket-outlet shall be installed near the equipment and the plug (disconnecting device) shall be easily
accessible.
When the Unit 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.
• Do not stand or sit on, nor hang down from the unit as this may cause it to fall down or drop, resulting in per-
sonal injury and/or property damage.
• When the unit is not in use for 10 days or more, or when the AC power is used for operating the unit, be sure
to take the battery out of the unit because battery leakage may cause a re, personal injury, or contamination
of environment.
• 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. Doing otherwise may cause a re or electric shock.
· Do not short, disassemble, heat nor put the battery into a re.
· Do not solder a battery directly.
· Be sure to use the specied 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 battery.
2. GENERAL DESCRIPTION
TOA’s WA-1830M-AS and WA-1830MB-AS are portable meeting ampliers featuring 2-way speaker system.
WA-1830M-AS has a MP3 player unit and WA-1830MB-AS has a MP3 player unit and Lead Acid battery.
Both models can accommodate 2 diversity wireless tuner units of crystal-controlled PLL synthesizer system
WTU-4800s. Other feature includes the anti-bacteria treated carrying handle.
3. FEATURES
• Excellent Sound Quality
Both the built-in cone speaker and constant directivity speaker feature the highest sound quality.
• High Intelligibility
New circuitry has been designed to reduce sound distortion at high-volume sound outputs to realize excellent
intelligibility for both quiet and loud sounds.
• High Power and Long Battery Life
Although rated at a high power output of 30 W, the WA-1830M-AS and WA-1830MB-AS consumes low power
to maintain a longer battery life.
• Lightweight Design
Carefully reviewed design and construction realize reduced and balanced weight that facilitates transport and
makes the Meeting Amplier seem lighter than it actually is.
• Improved Operating Ease
· Knobs are easy to operate, and indications are larger and more legible.
· Increased component storage volume is large enough to accommodate 2 wireless microphones, 1 wired
microphone and a dust cover.
· Design battery compartment to easy replacement battery with the new one.
· Snap-in type external speaker terminal facilitates external speaker connection.
5
5. NOMENCLATURE AND FUNCTIONS
4. HINTS FOR BETTER USE
• Positioning Orientation
Position the unit with its front (speaker side) oriented toward the listeners to avoid feedback. If feedback
occurs, move the microphone away from the unit or decrease the output volume.
• Location
Sound from the speaker can be heard more clearly by positioning the unit above oor level, such as on a desk.
The distance between the meeting amplier and the wireless microphone can also be made longer.
• Dead Point
As the wireless microphone user moves, a point where signal reception is abruptly and temporarily lost may
be encountered due to radio signal reection or interference. To avoid such a dead point, keep the unit away
from walls or desks, or move the unit location approximately 1 – 2 m in any direction.
• Radio Signal Source Interference
Keep the unit away from uorescent lamps or computers, which can generate high frequency noise, as radio
interference could result, shortening the wireless microphone’s transmission distance.
• Wireless Microphone Distance
Keep the unit at least 3 m away from the wireless microphone. If the distance is shorter than 3 m, feedback
noise can be generated, resulting in radio interference.
• Cleaning
When cleaning, be sure to switch off the power, then wipe with a dry cloth. If the unit should become extremely
dirty over time, use a cloth dampened in a neutral detergent. Never use volatile liquids such as benzene or
thinner, because they can deform or discolor the unit’s case.
ON
OFF
MIC 1MIC 2WIRED MIC
010010 010
3
1
2
5
[Front]
5
2
6 7
[Rear]
8
12 12
14
10
9
11
13
15
17
18
19
20
16
POWER
LOW BATT.
RED
CHARGE BATT.
GREEN
[Tuner Cover]
1
2
21
To be mounted to the Wireless tuner receptacle (12)
4
[Top]
22
[Battery Unit] WA-1830M-AS does not include battery
To be installed in the battery compartment (9)
OPEN
WIRELESS MEETING AMPLIFIER
MIC 2 MIC 1
POWER
1. Power switch
Turns the power ON and OFF when pressed.
2. Power Indicator
Lights green when the power switch is set to
the ON position, and ashes when the batteries
begin to lose their charge during battery-powered
operation.
3. Handle
Raise and use this handle to carry the unit.
Note: Use this handle only to transport the unit.
Never suspend the unit from this handle.
4. Low Battery Indicator / Charge Battery
The indicator light turns red when the battery
is low and the indicator light turns green when
battery under charging. No light indicates when
battery full charge.
5. Wireless Indicator LED
The light is orange when the unit receives the
radio signal from the wireless microphone.
6. Wireless Microphone Volume Control
As a general guide line. Set this control to posi-
tion 3 for clip-on wireless microphone and posi-
tion 7 of hand-held wireless microphone. These
position are marked with larger dot marking.
7. Wired Microphone Volume Control
Adjust the volume of the microphone connected to
the microphone Input terminal. As a general rule of
thumb, set this control to position 5 (the larger dot).
8. MP3 Player Unit
Details of operation described are on p.9 of this
manual.
9. Battery Compartment
Holds the unit’s cartridge-type battery case.
10. Internal or External Speaker Switch Selection
: Enables internal speaker only.
: Enables external speaker only.
11. External Speaker Terminal
Connect an 4 – 16 Ω speaker rated for at least
30 W to this terminal. Note the correct polarities
when connecting.
6
12. Wireless T uner Receptacle
Has 2 (optional) wireless tuners can be installed.
13. AC inlet
Connect the supplied AC power cord to this inlet.
14. Tone Control
Rotate clockwise to accentuate high frequency
sounds, and counterclockwise to accentuate low
frequency sounds.
15. Wired Microphone Terminal
Connect a wired microphone here. (Applicable
microphone: 600 Ω, –45 dB*, unbalanced, 6.3
mm phone jack)
16. External input Volume Control
Adjusts the sound volume of connected external
equipment.
17. External Output Terminal
Connect an external Wireless Meeting Ampli-
er or amplier to this terminal. (1 kΩ, 0 dB*,
Unbalanced, 6.3 mm phone jack)
18. External input Terminal
Enables connection to a CD player or other sound
source. Pin jack x 2 (monaural) (10 kΩ, –20 dB*,
unbalanced type)
19. Compartment Cover
20. Component Compartment
Used to store such components as the power
cord, wired and wireless microphones, and dust
cover.
21. Tuner Cover
This cover must be attached after installing the
tuner.
22. Battery Unit (WA-1830M-AS does not include
battery)
Details of using batteries are described on p.11 of
this manual.
* 0 dB = 1 V
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