Toa SA-112 CE User manual

OPERATION MANUAL
PA AMPLIFIER
SA-112 CE
Thank you for purchasing TOA's PA Amplifier.
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.

1
TABLE OF CONTENTS
SAFETY PRECAUTIONS ...................................................................
GENERAL DESCRIPTION .................................................................
FEATURES .........................................................................................
USAGE TIPS .......................................................................................
NOMENCLATURE AND FUNCTIONS ...............................................
OPERATIONS ......................................................................................
TROUBLESHOOTING .......................................................................
SPECIFICATIONS ..............................................................................
2
5
5
5
6
8
10
11
1.
2.
3.
4.
5.
6.
7.
8.

2
SAFETY PRECAUTIONS
•Be sure to read the instructions in this section carefully before use.
•Make sure to observe the instructions in this manual as the conventions of safety symbols and
messages regarded as very important precautions are included.
•We also recommend you keep this instruction manual handy for future reference.
WARNING Indicates a potentially hazardous situation which, if mishandled,
could result in death or serious personal injury.
When Installing the Unit
Do not splash the unit with water
Do not expose the unit to rain or an environment where it may be splashed by water
or other liquids, as doing so may result in fire or electric shock.
Do not use non specified voltage
Use the unit only with the voltage specified on the unit. Using a voltage higher than that
which is specified may result in fire or electric shock.
Do not damage the power supply cord
Do not cut, kink, otherwise damage nor modify the power supply cord. In addition, avoid
using the power cord in close proximity to heaters, and never place heavy objects --
including the unit itself -- on the power cord, as doing so may result in fire or electric shock.
Do not install the unit at outdoor areas
The unit is designed for indoor use, exposing the unit in outdoor area may result
in fire or electric shock.
Install the unit at a stable location
Avoid installing or mounting the unit in unstable locations, such as on a rickety table
or a slanted surface. Doing so may result in the unit falling down, causing personal injury
and/or property damage.
Avoid placing the unit on unstable location
Avoid placing the unit on unstable locations. Doing so may result in the unit falling down,
causing personal injury and/or property damage.
Use suitable screw and parts
Please select screws and parts when installing the unit to walls.
Not doing so may result in the unit falling down, causing personal injury and/or
property damage.
Tight every screw and different parts
Please make sure every parts and screw are tightened.Not doing so may result in the unit
falling down, causing personal injury and/or property damage.
Prohibited
Prohibited
Prohibited
Prohibited
Prohibited
Prohibited
Prohibited
Prohibited

3
WARNING Indicates a potentially hazardous situation which,
if mishandled, could result in death or serious personal injury
When the Unit is in Use
Use AC Adapter
AC adapter with CE certification must be used. Using adapter without CE certification may
result in fire or electric shock.
Connect with specified equipment only
SA-112 can only be connected with specified equipment (IR-701TA CE).
It cannot connect with other equipment and doing so may cause damage to both equipments.
Do not disassemble or modify the unit
To prevent a fire or electric shock, never open nor remove the unit case as there are
high voltage components inside the unit. Refer all servicing to your nearest TOA dealer. Prohibited
When Irregularity Occurs
Should the following irregularity be found during use, immediately switch off the power, disconnect the
power supply plug 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 ofthe core, disconnection, etc.)
•If it is malfunctioning (no tone sounds.)
Avoid touching the power plug during thunder storm
Avoid touching power plug or power source during bad weather condition
such as thunder storm. Do not touch
Do not use the unit near medical appliances
Electric wave emitted from the unit may cause interference to medical appliances.
Turn off the power supply of the unit when medical appliance is installed nearby. Prohibited
Prohibited

4
CAUTION Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
When Installing the Unit
Do not remove the power supply plug with wet hands
Never plug in nor remove the power supply plug with wet hands, as doing so may cause
electric shock.
Do not place heavy objects on the unit
Do not place heavy objects on the unit as this may cause it to fall or break which may result in
personal injury and/or property damage. In addition, the object itself may fall off and cause
injury and/or damage. Must
When cleaning or leaving the unit unused
Switch off the power, and unplug the power supply plug for safety purposes
when cleaning or leaving the unit unused for 10 days or more.
Doing otherwise may cause a fire or electric shock.
Prohibited
Unplug

5
Equipped with 2 sets of microphone input, 2 sets of AUX input and 1CH infrared wireless microphone input,
the small and light-weighted SA-112 classroom amplifier is suitable to be mounted on wall or to be placed
on the table for different application.
●The unit is light in weight and compact in size.
●Auto mixing AUX/LINE input and can be used for emergency broadcast.
●Equipped with 2 sets of microphone input, 2 sets of AUX input and 1CH infrared wireless microphone input.
(Optional : IR-701TA CE & IR-201M CE )
● Input plug is placed on the front panel for control ease.
● The amplifier uses 100V high impedance transformer for speaker line connection. The unit is hence
interference resistant.
● EXT IN is priority input for broadcast. The input signal can bypass the unit when the power supply of the
unit is switched off.
●Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.
● When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord
itself. Operating the unit with a damaged power supply cord may cause a fire or electric shock.
● When moving the unit, be sure to remove its power supply cord. Moving the unit with
the power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric
shock. When removing the power cord, be sure to hold its plug to pull.
● Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric
shock.
● Do not operate the unit for an extended period of time with the sound distorting. This is an indication of a
malfunction, which in turn can cause heat to generate and result in a fire.
● Avoid installing or mounting the unit in unstable locations, such as on a rickety table or a slanted surface.
Doing so may result in the unit falling down, causing personal injury and/or property damage.
GENERAL DESCRIPTION
FEATURES
USAGE TIPS

6
AUX IN input terminal
Balanced -20dB,10k
3.5mm Stereo Mini Jack
AUX / LINE volume control
MIC1/IR volume control VR
MIC1/IR volume control
MIC1 input terminal
Balanced -60dB,600
Phone Jack
MIC2 input terminal
Balanced -60dB,600
Phone Jack
MIC2 volume control VR
MIC2 volume control
BASS
Adjusts bass response
TREBLE
Adjusts treble response
POWER LED
Indicate power supply
Lights when power on
SIG IN LED
Signal Input Indicator
Lights when signal input
SIG OUT LED
Signal Output Indicator
Lights when signal output
PROTECT LED
Amplifier Protection Circuit Indicator
Lights when protection circuit activite
POWER Switch
Press to turn ON the power
Press again to turn the power OFF
1
2
3
4
5
6
7
8
9
10
11
12
13
【FRONT VIEW 】
MIC 1 / IR MIC 2
12 3 45 6 7 8 9 10 13
11 12
SIG OUT
PROTECT
POWER
AUX IN
TONE
TREBLE
SIG IN
PA AMPLIFIER SA-112
POWER
BASS
MIN. MAX.
MIN. MAX.
VOLUME
0 10
VOLUME
0 10
VOLUME
0 10
NOMENCLATURE AND FUNCTIONS

7
CORD CLAMP
Pass the power cord through this clamp
DC INPUT TERMINALS
Connect to a DC power supply.
SPEAKER OUTPUT TERMINALS
Connect to speakers.
※ Maximum voltage 100V,Maximum output 12W
EXT IN INPUT TERMINALS
Connect to 100V speaker line signal from other equipment
EXT IN Volume / Sensitivity Control
Sensitivity control for the signal from EXT IN
Control the broadcast of external signal by adjusting the sensitivity to the input signal
IR CONNECTION TERMINAL
Connection terminal for IR-701TA CE
LINE IN INPUT TERMINALS
Unbalanced connection for -20dB,10k signal input
RCA Pin Jack
14
15
16
17
18
19
20
【REAR VIEW 】
※1 、20 are auto mixed input
※4 、19 are auto mixed input
100V COM
LINEIRDC IN
H C
SENSE
24V 1A
SIGNAL
GND
SP OUT
(12W Max)
EXT IN
( 100V )
1514
16 17
18 19 20
MIN. MAX.

8
■CONNECTIONS
100V COM
LINEIRDC IN
H C
SENSE
24V 1A
Speaker (100V / 6W)
Emergency Broadcast
Equipement
H
C
RJ45
IR-701TA CE
SA-112
Remove the shorting wire
from the terminal
when connect to emergency
broadcast equipments
Speaker (100V / 6W)
SIGNAL
GND
SP OUT
(12W Max)
EXT IN
( 100V )
MIN. MAX.
OPERATIONS

9
■Usage of Microphone
Choose the microphone input terminal
Turn the microphone input volume to the minimum level
Turn on the power of the amplifier
Switch on the microphone
Adjust the MIC volume control
After using, switch off the microphone
Switch off the power supply of the amplifier
1.
2.
3.
4.
5.
6.
7.
■Usage of IR-701TA CE
Connect the IR-701TA CE to the IR connection terminal
Turn the MIC1/IR volume control to the minimum position
Turn on the power supply of the power amplifier
Switch on the microphone
Adjust the volume control of microphone and use the microphone for broadcast
After the usage, turn of the microphone
Turn off the power supply of the amplifier
For operation details of IR-701TA CE, please refer to the operation manual of IR-701TA CE
1.
2.
3.
4.
5.
6.
7.
※
■Usage of AUX IN
Connect AUX signal to AUX IN terminal and adjust the AUX IN volume control
■Usage of emergency broadcast
Remove the cable shorting the EXT IN terminal and connect with the emergency broadcast equipment.
Adjust the sensitivity control of EXT IN. After the emergency broadcast, the system will resume to
normal operation mode in 3-6 seconds.
(1) The sensitivity of EXT IN is adjusted to the minimum level as factory default
(2) Noise can affect the change over of emergency broadcast. Adjust the sensitivity control of EXT IN
to prevent unwanted broadcast and change over caused by noise signal.
※

10
IF TROUBLE OCCURS
1. Check the connection
between DC power supplier
and the power amplifier.
2. Check the power switch of
the amplifier.
1. Connect DC power supplier with
the power amplifier.
2. Switch on the amplifier.
1. Check the connection of
AUX IN and EXT IN.
2. Check the volume control
position.
3. Check the connection
between speaker line and
the SP out terminal.
1. Connect DC power supplier with
the power amplifier.
2. Switch on the amplifier.
1. Check if the speaker line and
SP out connection is shorted
1. Remove the shorted connection
between the speaker and SP
output terminal.
1. Check the connection of
AUX IN and EXT IN.
2. Protection circuit activated due
to amplifier overheat.
1. Connect the AUX In and EXT IN
with input device.
2. Check if the surrounding
temperature is above 40°C.
3. Check if the speaker connection
exceeded 12W.
Symptom Potential Cause / Place
to Inspect Remedy
POWER LED does not light
No sound from speaker
PROTECT LED lights
Discontinuous of broadcast
TROUBLESHOOTING

SPECIFICATIONS
Power Source DC 24V / 1A
Amplification System Class D
Power Consumption 22W (1kHz Sine wave)
5.6W (1/8 rated output)
Maximum Cutput 12W (100V)
Output Impedance 833
Frequency Response 50Hz~20kHz (-6dB@50Hz , -7dB@20kHz )
Distortion 0.15% (1kHz)
S/N Ratio 75dB or more (A-Weighted)
Protection Protection against over heat, excessive current flow, output short circuit
(Automatically resume after fault resolution)
Input
MIC1 / IR (Front Panel)
MIC2 (Front Panel)
AUX (Front Panel)
LINE (Rear Panel)
IR (Rear Panel)
EXT IN (Emergency Input)
: -60dB*, 600 ,Balanced (Phone Jack)
: -60dB*, 600 , Balanced (Phone Jack)
: -20dB*, 10k ,3.5mm Stereo Mini Jack
: -20dB*, 10k ,Unbalance RCA Pin Jack
: RJ45 (For IR-701TA CE)
: +40dB* (100V), EXT IN has the highest priority
Tone Control BASS
TREBLE
: ±10dB at 100Hz
: ±10dB at 10kHz
EXT Input Sensitivity Control SENSE : MIN. (Emergency paging start when EXT input higher than 10V)
MAX. (Emergency paging start when EXT input higher than 30V)
Indicator
SIG OUT (Yellow LED)
PROTECT (Red LED)
SIG IN (Green LED)
POWER (Green LED)
: Lights when signal out
: Lights when protection circuit activate
: Lights when signal in
: Lights when the power is switched on.
Operating Temperature -10 ~ +40°C
Operating Humidity Less than 90%RH
Dimensions 210(W) x 44(H) x 204.5(D)mm
Weight 800g
Finish Upper case : ABS resin (Black)
Lower case : ABS resin (Black)
Accessory TOA sticker x1
Option
AC adapter (Q-AD-SA112) x1
Wall mount bracket (Q-MA-SA112) x2
1CH Infrared wireless microphone system : IR-701TA CE
Note : The design and specifications are subject to change without notice for improvement.
Traceability Information for Europe
Manufacturer :
TOA Corporation
7-2-1,Minatojima Nakamachi,Chuo-ku,Kobe,Hyoko,
Japan
Authorized representative :
TOA Electronics Europe GmbH
Suederstrasse 282,20537 Hamburg,
Germany
D33-07-037-40