Toa A-230 HV - Manual (Page 3)

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• 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
2 3 4 5 6 1 7
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.