Toa A-230 HV User Manual

OPERATING INSTRUCTIONS

PA AMPLIFIER A-230 HV

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.

1. SAFETY PRECAUTIONS ........................... 2

2. GENERAL DESCRIPTION ......................... 3

3. FEATURES ................................................. 3

4. NOMENCLATURE AND FUNCTIONS

4.1. Front ..................................................... 3

4.2. Rear ...................................................... 4

5. MUTING FUNCTION ................................... 4

6. INSTALLATION .......................................... 5

7. CONNECTIONS

7.1. Input Connections ................................ 5

7.2. Output Connections .............................. 5

7.3.

Example of External Equipment Connections

.... 6

8. VOLUME CONTROL SETTINGS ............... 6

9. BLOCK & LEVEL DIAGRAM ..................... 7

10. DIMENSIONAL DIAGRAM ......................... 7

11. SPECIFICATIONS ...................................... 8

TABLE OF CONTENTS

When Installing the Unit

• 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.

• The terminals marked with the symbol are hazardous live. The external wiring to these terminals requires installation by an instructed person.

• The socket-outlet shall be installed near the equipment and the plug (disconnecting device) shall be easily accessible.

• Be sure to replace the unit's terminal cover after connection completion. Because the voltage of up to 100 V is applied to the high impedance speaker terminals, never touch these terminals to avoid electric shock.

• Be sure to ground to the safety ground (earth) terminal to avoid electric shock. Never ground to a gas pipe as a catastrophic disaster may result.

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.)

· If it is malfunctioning (no tone sounds.)

• To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to you nearest TOA dealer.

• 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 insert nor drop metallic object or flammable materials in the ventilation slots of the unit's cover, as this may result in fire or electric shock.

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.

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.

Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

WARNING

CAUTION

• 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.

• Do not block the upper panel ventilation slots in the unit's cover. Doing so may cause heat to build up inside the unit and result in fire.

• 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 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.

2. GENERAL DESCRIPTION

TOA's Basic Amplifier A-230 is a high cost-performance mixer power amplifier suited for paging announcement or background music in schools, offices, shops, factories, mosques, churches, and small rooms.

3. FEATURES

• High durability, high reliability, and high performance.

• Three microphone inputs and one AUX input.

• Speaker output of constant voltage distribution system (100 V) and low impedance (4 Ω).

• Operates on AC or DC power.

• Muting function.

• Independent input volume controls.

• Independent tone controls of cut type for both high and low frequencies.

• Current limiter circuitry protects transistors against a failure due to overheat.

4. NOMENCLATURE AND FUNCTIONS

4.1. Front

1. Power switch

Press to turn on the power. Press again to turn off the power.

2. Power Indicator

Lights green when power is switched ON.

3. Microphone Volume Controls

Adjust the microphone level.

4. AUX Volume Control

Adjusts the AUX level.

5. Bass Control

Adjusts bass response. Rotate counterclockwise to reduce it. The maximum position "0" provides flat characteristics.

6. Treble Control

Adjusts treble response. Rotate counterclockwise to reduce it. The maximum position "0" provides flat characteristics.

7. Signal Indicator

Lights green when power is switched ON, and indicates an output signal level.

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