USER'S MANUAL
NEW 900 SERIES
IN-WALL MIXER POWER AMPLIFIERS
W-906A
W-912A
INPUT 1
POWER
ON
250V 3A 250V 6A
OFF
OFF MAX
INPUT 2 INPUT 3
AC FUSE
OFF ON
LOW PASS
OFF ON
HIGH PASS
OUT
63 125 250 500 1k 2k 4k 8k 16k
63 125 250 500 1k 2k 4k 8k 16k
IN
EQUALIZER
OUTPUT FUSE COMPRESSOR
INPUT 4 INPUT 5 INPUT 6 MASTER
12
6
0
6
12
12
6
0
6
12
900 SERIES
WALL AMPLIFIER
POWER PEAK
Thank you for purchasing TOA's New 900 series In-wall Mixer Power Amplifier.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
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TABLE OF CONTENTS
1. IMPORTANT SAFETY INSTRUCTIONS .................................................... 3
2. SAFETY PRECAUTIONS ................................................................................. 4
3. GENERAL DESCRIPTION .............................................................................. 6
4. FEATURES ........................................................................................................... 6
5. NOMENCLATURE AND FUNCTIONS
Front ..........................................................................................................................7
6. SERVICING .......................................................................................................... 8
7. OPERATION
7.1. Basic Operation Procedure ................................................................................ 8
7.2. Filter ON/OFF ..................................................................................................... 8
7.3. Compressor ON/OFF ......................................................................................... 8
8. VOLUME CONTROL COVER ATTACHMENT .......................................... 9
9. OUTPUT EQ CHARACTERISTIC ................................................................. 9
10. SPECIFICATIONS ............................................................................................ 10
Accessories ............................................................................................................. 11
Optional products .................................................................................................... 11
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1. IMPORTANT SAFETY INSTRUCTIONS
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer,
or sold with the apparatus. When a cart is used, use caution when moving the
cart/apparatus combination to avoid injury from tip-over.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
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2. SAFETY PRECAUTIONS
• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe
operation.
• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or
cautions regarding safety.
• After reading, keep this manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.
• Should the following irregularity be found during use, immediately switch off the power, disconnect the power
supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the
unit in this condition as this may cause fire or electric shock.
· If you detect smoke or a strange smell coming from the unit
· If water or any metallic object gets into the unit
· If the unit falls, or the unit case breaks
· If the power supply cord is damaged (exposure of the core, disconnection, etc.)
· If it is malfunctioning (no tone sounds.)
• To prevent a fire or electric shock, never open nor remove the unit front cover as there are high voltage
components inside the unit. Refer all servicing to your nearest TOA dealer.
• Do not place cups, bowls, or other containers of liquid or metallic objects on top of the unit. If they
accidentally spill into the unit, this may cause a fire or electric shock.
• Do not insert nor drop metallic objects or flammable materials in the ventilation slots of the unit's cover, as
this may result in fire or electric shock.
• To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
• Apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such as vases,
shall be placed on the apparatus.
• External wiring connected to the terminals marked with requires installation by an instructed person.
Indicates a potentially hazardous situation which, if mishandled,
could result in death or serious personal injury.
WARNING
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important operation and maintenance (servicing) instruction in the literature accompanying the
appliance.
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