TOA Electronics A-903MK2, A-906MK2, A-912MK2 user service Features

General Description
The TOA A-903MK2, A-906MK2 and A-912MK2 Mixer Power Amplifiers control and mix up to eight
independent input signals. The A-903MK2 delivers up to 30 watts of output power, the A-906MK2 60 watts
and A-912MK2 120 watts.
Optional plug-in modules are available for use with these mixer power amplifiers to provide versatility for a
wide range of operating applications. Edge connectors on the rear of the unit permit the selection of the TOA
plug-in modules.
The mixer power amplifiers have output terminals to match 4- or 8-ohm speaker systems, or speaker
distribution systems may be connected to 25- or 70-volt terminals, and can be rack mounted by using
optional rack mounting bracket MB-25B. The optional perforated panel PF-511 provides suitable ventilation,
finished in color to match the mixer power amplifiers.
Features
1. 8-channel mixer power amplifier
2. Wide frequency response : 20~20,000 Hz ± 1 dB
3. Low distortion and noise level
4. Remote master volume control
5. Excellent output regulation
6. Bass and treble controls
7. Bridging input/output
8. Self-protection circuitry design
9. Signal processing input/output
10. Varied output impedances : 4 ohms, 8 ohms, 25 and 70 volts
11. A full range of plug-in modules
12. Portable or rack mounting type
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