Toa 900 Series User Manual

TOA 900 SERIES II
MIXER POWER AMPLIFIER
Operating Instructions
A-903MK2
A-906MK2
A-912MK2
TO REDUCE THE RISK OF ELECTRICAL
SHOCK, DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
THE LIGHTNING FLASH WITH
ARROWHEAD WITHIN A TRIANGLE IS
INTENDED TO TELL THE USER THAT
PARTS INSIDE THE PRODUCT ARE A
RISK OF ELECTRIC SHOCK TO
PERSONS.
THE EXCLAMATION POINT WITHIN A
TRIANGLE IS INTENDED TO TELL
THE USER THAT IMPORTANT
OPERATING AND SERVICING
INSTRUCTIONS ARE IN THE PAPERS
WITH THE APPLIANCE.
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
TOA Corporation

Toa 900 Series Specifications

General

Brand	Toa
Model	900 Series
Category	Amplifier
Language	English

Summary

General Description

Features

Nomenclature

Front Panel

Details the controls and indicators on the front of the amplifier.

Rear Panel

Describes connections and ports on the rear of the amplifier.

Input Connections

Output Connections (A-903MK2)

To connect speakers to 8-ohm output (UNBALANCED DIRECT OUTPUT)

Guides connecting 8-ohm speakers to the A-903MK2 via direct output.

Output Connection (A-906MK2/A-912MK2)

To connect speakers to 4-ohm output (UNBALANCED DIRECT OUTPUT)

Guides connecting 4-ohm speakers to A-906MK2/A-912MK2 via direct output.

Muting and Remote Volume Control Connection

Rack Mounting

Operation

Volume Adjustment

How to set the desired output level using volume controls.

Tone Control Adjustment

How to adjust bass and treble response using tone controls.

Installation

Guidelines for installing the amplifier in its operating environment.

Servicing

Instructions for unpacking, handling damage, and failure.

Specifications

Appearance (A-903MK2)

Appearance (A-906MK2/A-912MK2)