1. GENERAL DESCRIPTION

TOA’s Basic PA Amplifiers A-1031, A-1061, and A-1121 are high cost-performance mixer power amplifiers suited for broadcasting paging or background music in schools, offices, and shops.

2. FEATURES

• High durability, high reliability, and high cost performance.

• Three microphone inputs, two AUX inputs, and one recording output.

• Speaker outputs of constant voltage distribution system (100 V and 70 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 cut both high and low frequencies.

• Power voltage selector of 110 – 120 V or 220 – 240 VAC (LH version).

• MIC 1 input is a 5-pin DIN connector to provide muting control and phantom power for condenser microphones. (ER and UK versions).

• Five-segment output level meter provides at-a-glance monitoring of output status.

• Current limiter circuitry protects transistors, and the thermal protection circuitry prevents a failure due to overheat

3. SPECIFICATIONS Note:

The design and specifications are subject to change without notice for improvement. Specifications are measured on 240 VAC power operation. The LH versions operating voltage is factory-preset at “220 V – 240 VAC”.

Model Output Output Regulation Speaker Output Recording Output Input MIC 1 Connector MIC 1 Phantom Power (ER/UK Versions)

Frequency Response Distortion Signal-to-Noise Ratio Tone Controls Protection Circuit Muting Function Dimensions Weight Color Power Requirements Power Consumption (at rated output) Rated Max. LH version LH version ER MIC 2, 3 AUX 1, 2: 10 kohms, 100 mV (-20 dBV) 1/4″ phone jack 5P DIN 3P XLR type 100 – 10,000 Hz (± 3 dB) Less than 1% at 1 kHz, 1/3 rated power All volume controls ccw MASTER max., all input volume min.: 75 dB MIC 1, 2, and 3 AUX 1 and 2 Bass Treble: +0 dB, -10 dB at 10 kHz Current limiter, thermal protection, AC & DC fuse 9 VDC 21 VDC Less than 3 dB, no load to full load Balanced 4 ohms, 70 V and 100 V 600 ohms, 1 V (0 dBV) MIC 1, 2, 3: 600 ohms, 1.8 mV (-55 dBV) , unbalanced AUX 1, 2 : 10 kohms, 100 mV (-20 dBV) , unbalanced MIC 1 : 600 ohms, 1.8 mV (-55 dBV) , electrical balanced : 600 ohms, 1.8 mV (-55 dBV) , unbalanced MIC1 overrides other input signals with 0 – 30 dB attenuation LH version ER, UK, AS version: 220– 240 V Black 420 (w) x 103 (h) x 262 (d) mm AS AS version AC 50/60 Hz DC AC 50/60 Hz DC UK versions ER, UK versions A-1031 A-1061 A-1121 30 W 60 W 120 W 45 W 90 W 180 W 120 W 220 W 380 W 5.0 kg 7.5 kg 10 kg