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3. GENERAL DESCRIPTION
TOA’s Basic Ampliers A-2030, A-2060, A-2120, and A-2240 are high cost-performance mixer power ampliers
suited for broadcasting paging or background music in schools, ofces, shops, factories, mosques, churches
and large rooms.
4. FEATURES
• High durability, high reliability, and high cost performance.
• Three microphone inputs, two AUX inputs, and one recording output.
• Speaker output of constant voltage distribution system (70 V or 100 V) and low impedance (4 Ω).
• Operates on both AC and DC power.
• Muting function.
• Independent input volume controls and master volume control.
• Independent tone controls of boost and cut type for both high and low frequencies.
• MIC 1 input is equipped with a 5-pin DIN connector to provide muting control.
• MIC 1 with phantom power for condenser microphones.
• Current limiter circuitry protects transistors, and the thermal protection circuitry prevents a failure due to
overheat.
• All MIC inputs are electronically-balanced input.
5. NOMENCLATURE AND FUNCTIONS
[Front]
[Rear]
1. Power switch
Press to turn ON the power.
Press again to turn the power STANDBY.
Disconnect the AC mains plug or DC Terminal to
shut the power OFF completely.
2. Power indicator
Lights green when power is switched ON.
3. Signal indicator
Lights green when power is switched ON, and
indicates an output signal.
4. Peak indicator
Lights red to indicate the output signal reaches the
peak level, this indicates that sound is distorted.
In such a case, adjust each volume control to
reduce output level.
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