Toa A-906MK2 User Manual

900 series
MIXER POWER AMPLIFIERS
A-903MK2
A-906MK2
A-912MK2
9
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SERIES
AMPL
IFIER
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OPERATING INSTRUCTIONS
Thank you for purchasing TOA's 900 Series Mixer Power Amplifier.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
This figure represents the A-903MK2.
TABLE OF CONTENTS
1. IMPORTANT SAFETY INSTRUCTIONS ..... 2
2. SAFETY PRECAUTIONS ............................ 3
3. GENERAL DESCRIPTION .......................... 5
4. FEATURES .................................................. 5
5. NOMENCLATURE AND FUNCTIONS ........ 6
6. INSTALLATION AND CONNECTIONS
6.1. Module Installation ................................ 8
6.2. Speaker Connections ............................ 9
6.3. Remote Control Connections .............. 11
7.
RACK MOUNTING BRACKET ATTACHMENT ... 12
8. OPERATION .............................................. 13
9. VOLUME CONTROL COVER ................... 13
10. DIMENSIONAL DIAGRAMS
10.1. A-903MK2 ......................................... 14
10.2. A-906MK2, A-912MK2 ...................... 14
11. SPECIFICATIONS
11.1. A-903MK2 ......................................... 15
11.2. A-906MK2, A-912MK2 ...................... 16

Toa A-906MK2 Specifications

General

Type	Power Amplifier
Output Impedance	4Ω - 16Ω
Output Power	60 W
Total Harmonic Distortion	0.5% (1kHz, 60W)
Frequency Response	20Hz - 20kHz
Dimensions	420 x 132 x 300 mm
Power Source	AC 50/60Hz
Input	RCA, XLR
Output	Speaker Outputs
Tone Control	Bass: ±10dB (100Hz), Treble: ±10dB (10kHz)
Input Impedance	10kΩ

Summary

1. IMPORTANT SAFETY INSTRUCTIONS

2. SAFETY PRECAUTIONS

When Installing the Unit

Safety guidelines for installing the amplifier unit, covering ventilation and placement.

When the Unit is in Use

Safety precautions to follow while operating the amplifier, including handling power and liquid.

3. GENERAL DESCRIPTION

4. FEATURES

5. NOMENCLATURE AND FUNCTIONS

6. INSTALLATION AND CONNECTIONS

6.1. Module Installation

Procedure for installing plug-in modules into the amplifier's input ports.

6.2. Speaker Connections

Guidelines for connecting speakers to the amplifier's various output terminals.

6.3. Remote Control Connections

Details on connecting remote volume and mute controls for enhanced functionality.

7. RACK MOUNTING BRACKET ATTACHMENT

8. OPERATION

9. VOLUME CONTROL COVER

10. DIMENSIONAL DIAGRAMS

10.1. A-903MK2 Dimensions

Physical dimensions and layout diagrams for the A-903MK2 model.

10.2. A-906MK2, A-912MK2 Dimensions

Physical dimensions and layout diagrams for A-906MK2 and A-912MK2 models.

11. SPECIFICATIONS

11.1. A-903MK2 Specifications

Detailed technical specifications for the TOA A-903MK2 Mixer Power Amplifier.

11.2. A-906MK2, A-912MK2 Specifications

Detailed technical specifications for the TOA A-906MK2 and A-912MK2 Mixer Power Amplifiers.