Introdución
This manual provides essential information for the safe and efficient operation of your TOA A-912MK2 8-Channel 120 watt Modular Mixer Amplifier. Please read this manual thoroughly before use and retain it for future reference.
Información de seguridade
Observe sempre as seguintes precaucións de seguridade para evitar descargas eléctricas, incendios ou lesións.
- Non expoña este aparello á choiva nin á humidade.
- Non bloquee ningunha abertura de ventilación.
- Asegurar a correcta posta a terra.
- Encargue toda a reparación a persoal de servizo cualificado.
- Desconecte a enerxía antes de limpar ou reparar.
Configuración
Desembalaxe
Elimina con coidado amplifier from its packaging. Inspect for any signs of damage during transit. Retain the original packaging for future transport or storage.
Colocación física
Coloca o amplifier on a stable, flat surface. Ensure adequate ventilation around the unit. Avoid placing it near heat sources, direct sunlight, or areas with excessive dust or moisture.
Conexións
Antes de facer calquera conexión, asegúrese de que amplifier is powered off and unplugged from the mains supply.
- Input Modules: The A-912MK2 is a modular mixer amplifier. Insert appropriate input modules (e.g., microphone, line, telephone) into the designated slots on the rear panel. Ensure modules are securely seated.
- Saídas de altofalantes: Conecta os teus altofalantes ao amplifier's output terminals. Observe correct polarity (+ to + and - to -). This amplifier supports various speaker impedances; refer to the specifications for compatible loads.
- Dispositivos externos: Connect any external audio processing equipment (e.g., equalizers, effects units) to the amplifier's send/return jacks if available.
- Conexión de alimentación: Once all audio connections are made, connect the power cord to the amplificador e despois a unha toma de corrente alterna axeitada.
Instrucións de funcionamento

Figura 1: Panel frontal view of the TOA A-912MK2 Modular Mixer Amplifier, showing input level controls, tone controls, master volume, and power switch.
Encendido/apagado
- To power on, ensure all volume controls are at their minimum setting, then press the power switch located on the front panel. The power indicator will illuminate.
- To power off, turn down all volume controls, then press the power switch.
Axuste do nivel de entrada
Each input channel has a dedicated level control knob on the front panel. Adjust these knobs to set the individual volume for each connected source. Start with low levels and gradually increase to avoid sudden loud sounds.
Controis de ton
O amplifier features bass and treble tone controls. Use these to adjust the overall tonal balance of the audio output. Turn clockwise to boost frequencies and counter-clockwise to cut them.
Volume mestre
The large master volume knob controls the overall output level of the amplifier. Adjust this to set the final listening volume for your speakers.
Mantemento
- Limpeza: Use un pano suave e seco para limpar o exterior ampNon empregue produtos de limpeza líquidos nin materiais abrasivos.
- Ventilación: Periodically check that the ventilation openings are free from dust and debris to ensure proper airflow.
- Almacenamento: If storing the unit for an extended period, disconnect it from power and store it in a cool, dry place, ideally in its original packaging.
Resolución de problemas
| Problema | Causa posible | Solución |
|---|---|---|
| Sen poder | Power cord disconnected; power outlet faulty; power switch off. | Comprobe a conexión do cable de alimentación; probe cunha toma de corrente diferente; asegúrese de que o interruptor de alimentación estea acendido. |
| Sen saída de son | Volume controls too low; speaker connections faulty; input module not seated correctly. | Increase master and input volumes; check speaker wiring; re-seat input modules. |
| Son distorsionado | Input level too high; speaker impedance mismatch; faulty speaker. | Reduce input levels; verify speaker impedance matches amplificador; proba con diferentes falantes. |
Especificacións
| Característica | Detalle |
|---|---|
| Marca | Toa |
| Modelo | A-912MK2 |
| Potencia de saídatage | 120 vatios |
| Canles | 8-Channel (Modular) |
| Material | Plástico |
| Cor | Negro |
| Dispositivos compatibles | Todos |
| ASIN | B008ZTABSY |
| Data de primeira dispoñibilidade | 19 de agosto de 2012 |
Información da garantía
TOA products are designed for reliability and performance. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Specific warranty terms and duration may vary by region. Please retain your proof of purchase for warranty claims.
For detailed warranty information, please refer to the warranty card included with your product or visit the official TOA websitio.
Atención ao cliente
If you encounter issues not covered in the troubleshooting section or require further assistance, please contact TOA customer support. Have your product model number (A-912MK2) and serial number ready when contacting support.
For the most up-to-date contact information, please visit the official TOA websitio web ou consulte os datos de contacto que se inclúen na embalaxe do produto.





