Toa WA-1822C User Manual
INSTRUCTION MANUAL
MEETING AMPLIFIERS WA-1822
WA-1822C
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.
This instruction manual covers TOA's WA-1822 and WA-1822C Meeting Amplifiers, which can be used
with the following tuner units. Please make sure that only the specified tuner units are used.
Model No. Product Name
The Number of
Tuner Unit Model No.
Mountable Tuner Units
WA-1822
Diversity Meeting Amplifier
2 WTU-4800, WTU-3800
WA-1822C
Diversity
Meeting
Amplifier
with Cassette
WA-1822C
2
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ................................................................................ 3
2. GENERAL DESCRIPTION .............................................................................. 4
3. FEATURES ........................................................................................................... 5
4. HINTS FOR BETTER USE .............................................................................. 5
5. NOMENCLATURE AND FUNCTIONS ......................................................... 6
6. ABOUT THE POWER SOURCE
6.1. Using AC Power Supply ..................................................................................... 8
6.2. Using Batteries
6.2.1. Battery type .............................................................................................. 8
6.2.2. Battery installation .................................................................................... 8
6.2.3. Power supply switching ............................................................................ 8
6.2.4. Guidelines on battery replacement times ................................................. 8
7. USING A WIRED MICROPHONE .................................................................. 9
8. USING A WIRELESS MICROPHONE ......................................................... 9
8.1. Tuner Unit Installation ...................................................................................... 10
8.2. Frequency Setting ............................................................................................ 10
9. USING THE CASSETTE DECK (WA-1822C only)
9.1. Nomenclature and Functions ........................................................................... 11
9.2. Playback .......................................................................................................... 12
9.3. Fast-Forwarding and Rewinding the Tape ....................................................... 13
9.4. Recording ......................................................................................................... 14
9.5. Cue .................................................................................................................. 15
9.6. About Operating Modes ................................................................................... 16
10. CLEANING (WA-1822C only)
10.1. Cleaning the Head, Capstan and Pinch Roller .............................................. 18
10.2. Demagnetizing the Head ............................................................................... 18
11. ABOUT CASSETTE TAPES ......................................................................... 19
12. ABOUT EXTERNAL EQUIPMENT
12.1. Using External Speakers ............................................................................... 20
12.2. Using an External CD Player or Cassette Deck (for Playback) ..................... 21
12.3. Using an External Amplifier or Cassette Deck (for Recording) ...................... 21
13. TROUBLESHOOTING .................................................................................... 22
14. SPECIFICATIONS ............................................................................................ 23
Accessories ............................................................................................................. 23
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: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Do
not place objects filled with liquids such as vases on the apparatus.
• Attention. Afin de réduire les risques de feu ou électrique,ne pas exposer l'appareil à la pluie ou à
l'humidité. Ne pas poser sur l'appareil d'objets contenant du liquide tels que vases ou autres.
• Avvertenze: Al fine di evitare rischi d'incendio o scosse elettriche, non esporre l'apparecchio a pioggia o
umidita. Non collocare oggetti contenenti liquidi, come vasi, sull'apparecchio.
• Sicherheitshinweise: Um Feuer oder einen elektrischen Schlag zu vermeiden, beachten Sie unbedingt die
folgenden Hinweise: Setzen Sie das Gerät niemals Regen oder Feuchtigkeit aus. Stellen Sie keine offenen
Behälter mit Flüssigkeiten wie beispielsweise Getränkegläser auf das Gerät.
• Atención: Para prevenir el riesgo de cortocircuito o incendio, no exponer el aparato a la lluvia ni a
ambientes humedos. No colocar objetos que contengan líquidos, tales como vasos, encima el aparato.
When Installing the Unit
• The apparatus shall be connected to a mains socket outlet with a protective earthing connection.
• 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.
• The apparatus shall not be exposed to excessive heat such as sunshine, fire or the like.
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 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.)
• Do not insert nor drop metallic objects or flammable materials in the ventilation slots of the unit's cover or the
cassette receptacle (cassette player), as this may result in fire or electric shock.
• Do not touch a plug during thunder and lightning, as this may result in electric shock.
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
WARNING
4
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 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.
• Avoid installing the unit in humid or dusty locations, or in locations generating sooty smoke or steam as
doing otherwise may result in fire 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
personal 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 batteries out of the unit because battery leakage may cause a fire, 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 fire or electric shock.
• 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.
· Avoid using both new and old batteries together.
· Do not solder a battery directly.
· Be sure to use the specified type of batteries.
· 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.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
CAUTION
2. GENERAL DESCRIPTION
Toa's WA-1822 and WA-1822C are portable diversity meeting amplifiers featuring 2-way speaker system.
In addition, the WA-1822C has a built-in cassette player.
Both models can accommodate 2 diversity wireless tuner units of crystal-controlled PLL synthesizer system
WTU-3800s or WTU-4800s. Other feature includes the antibacterial treated carrying handle.
• To prevent a fire 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.
5
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 20 W, the WA-1822 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 Amplifier 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.
· Power cord hanger facilitates storage of bulky power cord.
· Cartridge type battery case facilitates battery replacement.
· Battery check function indicates when batteries should be replaced.
· Snap-in type external speaker terminal facilitates external speaker connection.
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 floor level, such as on a
desk. The distance between the meeting amplifier 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 reflection 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 fluorescent 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.
6
5. NOMENCLATURE AND FUNCTIONS
Figure shows the WA-1822C.
[Top]
3
2
1
4
[Front] [Rear]
2
7
4
POWER
ON
OFF
MIC 1 MIC 2 WIRED MIC
010 010 010
5
6
LOW
010
HIGH
AUX IN (MONO)
WIRED MICTONE
LINE OUTAUX IN
13
14
15
16
17
8
ON
9
OFF
10
12
11 11
[Battery case] [Tuner cover]
To be installed in the Battery compartment (8). To be mounted to the Wireless tuner receptacle (11).
21
12
22
18
19
20
1
2
7
1. Power switch
Turns the power ON and OFF when pressed.
2. Power/Battery indicator
Lights green when the power switch is set to the
ON position, and gets dark 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. Radio signal reception indicator lamps
Each lamp lights orange when the unit receives a
radio signal from the wireless microphone.
5. Wireless microphone volume controls
As a general guideline, set these controls to
Position 3 for clip-on microphones, and to
Position 7 for hand-held microphones.
These positions are marked with larger dots.
6. Wired microphone volume control
Adjusts the volume of the microphone connected
to the Microphone Input terminal. As a general
guideline, set this control to Position 5 (larger dot
marking).
7. Cassette deck (WA-1822C only)
Details of operation are described on p. 11 of this
manual.
8. Battery compartment
Holds the unit's cartridge-type battery case.
9. Internal speaker ON/OFF switch
ON: Enables the internal speaker.
OFF: Disables the internal speaker.
10. External speaker terminal
Connect an 8 – 16 Ω speaker rated for at least
20 W to this terminal. Note the correct polarities
when connecting.
11. Wireless tuner receptacles
Accommodate optional wireless tuners.
12.AC inlet
Connect the supplied AC power cord to this inlet.
13. Tone control
Rotate clockwise to accentuate high-frequency
sounds, and counterclockwise to accentuate lowfrequency sounds.
14. Wired microphone terminal
Connect a wired microphone here.
(Applicable microphone: 600 Ω, –48 dB*,
unbalanced type)
15. External input volume control
Adjusts the sound volume of the connected
external equipment.
16. External output terminal
Connect an external cassette deck or amplifier to
this terminal.
(1 kΩ, –10 dB*)
17. External input terminal
Used to connect a portable CD player or other
sound source.
RCA jack x 2 (monaural)
(10 kΩ, –20 dB*, unbalanced type)
18. Compartment cover
19. Cord hanger
The lightly bundled power cord can be hooked
onto this hanger for storage.
20. Component compartment
Used to store such components as the power
cord, wired and wireless microphones, and dust
cover.
21. Battery case
Insert 8 R20P ("D" cell) batteries, noting the
correct polarities.
22. Tuner cover
This cover must be attached after installing the
tuner.
* 0 dB = 1 V
8
6. ABOUT THE POWER SOURCE
The WA-1822(C) Meeting Amplifier is designed to operate on both AC power supply and standard dry
batteries.
6.1. Using AC Power Supply
Remove the power cord from the component compartment, and connect to an AC outlet. Always be sure the
unit's power is switched OFF before connecting or disconnecting the power cord.
Notes
• Approximately 1 W is continually consumed even if the power switch is set to the OFF position.
• When the unit is not used, remove the power cord from the AC outlet.
6.2. Using Batteries
6.2.1. Battery type
Eight R20P ("D" cell) batteries of manganese or alkaline types can be installed in the battery case.
6.2.2. Battery installation
Step 1. Be sure to turn the power switch OFF and detach the power cord from the AC outlet.
Step 2. Remove the compartment cover, then pull the battery case out of the compartment.
The battery case can be easily removed by lifting slightly first before sliding it out of the compartment.
Step 3. Place 8 batteries in the case, noting the correct polarities indicated inside the case, then reinsert it in
the battery compartment.
6.2.3. Power supply switching
Detaching the power cord from the AC outlet automatically switches the power source from AC to the battery.
6.2.4. Guidelines on battery replacement times
• A dimming power indicator indicates that the batteries are beginning to lose their charge and should be
replaced as early as possible.
• Intermittent sound output may occur even when the power indicator remains steadily lit. It is recommended
that the batteries be replaced as early as possible in this case, too.
• Approximate battery usage times (replacement times) are shown below.
[When using the WA-1822 at room temperatures of 25°C]
Manganese batteries: Approximately 12 hours (continuous use)
Alkaline batteries: Approximately 24 hours (continuous use)
[When using the WA-1822C at room temperatures of 25°C]
Manganese batteries: Approximately 6 hours (continuous use)
Alkaline batteries: Approximately 12 hours (continuous use)
Notes
• Avoid mixing manganese and alkaline batteries.
• When changing batteries, always replace all 8 batteries at the same time. Combined use of new and old
batteries may cause battery leakage.
• Remove the batteries when not in use for prolonged periods of time (10 days or more).
3
2
2
1
Loading...