Toa TS-700 User manual

INSTRUCTION MANUAL
CONFERENCE SYSTEM
CENTER AMPLIFIER TS-700
CHAIRMAN UNIT TS-701
DELEGATE UNIT TS-702
TS-701
TS-700
TS-702
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS
2. GENERAL DESCRIPTION
3. FEATURES
4. NOMENCLATURE
4.1. Center Amplifier TS-700 Front Panel
4.2. Center Amplifier TS-700 Rear Panel
4.3. Chairman Unit TS-701 Front Panel
4.4. Delegate Unit TS-702 Front Panel
4. . Rear Panels of The Chairman Unit
and Delegate Unit
5. OPERATIONS
.1. Using The Conference Unit
.2. Making Priority Speech
(Chairman Unit TS-701 Only)
.3. Mic-off Function
.4. Limiting The Number of Simultaneously
Usable Delegate Units (TS-702)
. . Recording
6. INSTALLATIONS AND CONNECTIONS
7. SYSTEM EXPANSION
. BLOCK DIAGRAM
9. SPECIFICATIONS
10. DIMENSIONAL DIAGRAM
11. TROUBLESHOOTING
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
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1. 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.
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 so you are
thoroughly aware of the potential safety hazards as well as understand the safety symbols and messages.
Indicates a potentially hazardous situation which, if mishandled,
could result in death or serious personal injury.
Indicates a potentially hazardous situation which, if mishandled,
could result in moderate or minor personal injury, and/or property
damage.
WARNING
CAUTION
WARNING
When Installing the Unit
When the Unit is in Use
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.
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 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.
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 and causing personal injury and/or property
damage.
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 case 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.
Do not touch a plug during thunder and lightning,
as this may result in electric shock.
2

CAUTION
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 from the wall outlet. 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.
Do not block the upper panel ventilation slots in the
unit's cover. Doing so may cause heat to build up
inside the unit and result in fire.
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 place heavy objects on the unit as this may
cause the unit 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.
Do not stand or sit on, nor hang down from the unit
as this may cause the unit to fall down or drop,
resulting in personal injury and/or property
damage.
Make sure that the volume control is set to
minimum position before power is switched on.
Loud noise produced at high volume when power
is switched on can impair hearing.
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.
Contact your TOA dealer as to the cleaning. If dust
is allowed to accumulate in the unit over a long
period of time, a fire or damage to the unit may
result.
If dust accumulates on the power supply plug or in
the wall AC outlet, a fire may result. Clean it
periodically. In addition, insert the plug in the wall
outlet securely.
Switch off the power, and unplug the power supply
plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or
more. A fire or electric shock may result.
When Installing the Unit
When the Unit is in Use
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Speech can be amplified by simply connecting the center amplifier to the conference units using the
supplied cables.
Pushlock connectors facilitate cable connections.
Up to 70 conference units can be connected. (3 units per line x 2 lines)
The conference unit's microphone is detachable, and storage space can be saved.
The number of simultaneously-usable delegate units can be limited to avoid unnecessary confusion.
Wiring can be performed cleanly thanks to TOA's unique wiring method.
Delegate unit microphones can be made to turn off automatically if a speaker forgets to turn off the
microphone after use.
The contents of the conference can be recorded using the AR-71B alternate recording machine (optional).
The center amplifier functions as an expansion amplifier as well. Up to two expansion amplifiers can be
connected per system, and up to 140 conference units connected.
NOMENCLATURE
4.1. Center Amplifier TS-700
[Front panel]
Microphone volume control [MIC]
Adjusts the volume of the microphone connected
to the microphone input jack.
AUX1 volume control [AUX1]
Adjusts the volume of equipment connected to
AUX1 input jack.
Line volume control [LINE]
Adjusts the volume of the conference unit's built-
in speaker.
Power indicator lamp
Lights when the power switch on the rear panel is
set to ON.
GENERAL DESCRIPTION
The conference system can be easily installed by merely connecting the center amplifier (TS-700) to the
conference units (TS-701 chairman unit and TS-702 delegate unit) using the supplied cable. It can be put
away quickly after the conference is finished.
FEATURES
Automatic mic-off setting switch [TIME OUT]
Automatically turns off the conference unit's
microphone after speaking.
Speaker restriction switch [MIC LI MITER]
Sets the number of delegate units that can be
used simultaneously.
AUX2 input jack [AUX2]
Connects to a CD or cassette deck. (Adjust the
volume at the connected equipment.)
AUX1 input jack [AUX1]
Connects to a CD or cassette deck.
Mic input jack [MIC]
Connects to a microphone.
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4.2. Center Amplifier TS-700
[Rear panel]
Chime volume control [CHIME]
Adjusts the volume of the chime sounded when
the chairman unit's priority button is pressed.
LINE1 connection terminal [LINE 1]
Up to 3 conference units can be connected to
this terminal. When using the amplifier as an
expansion amplifier, this terminal is used to
connect the center amplifier.
LINE2 connection terminal [LINE 2]
Up to 3 conference units can be connected to
this terminal. When using the amplifier as an
expansion amplifier, this terminal is used to
connect the expanded conference units.
Recording output terminal [REC OUT] (RCA-pin jack)
Connects to a cassette deck or other recording
machine.
Speaker
Outputs the speaker's voice. Adjust the volume with the center
amplifier's LINE volume control. The speaker is temporarily disabled
while the microphone in-use indicator is on.
Gooseneck microphone
Keep your mouth 10-1 cm away from the microphone when speaking.
Because the orientation of the microphone can be changed, set the
microphone in the best position. The microphone can be removed
when putting unit away.
Microphone in-use indicator
Lights when the microphone can be used.
Priority button (press-to-talk type) [PRIORITY]
While this button is pressed, the microphone in-use indicator remains
lit, allowing priority speech to go through. As far as this button is
pressed, no other conference units can be used. When this button is
pressed, a single tone chime is sounded. Adjust the chime volume with
the chime volume control on the center amplifier.
Talk button [TALK]
Press this button to speak. The microphone in-use indicator lights.
Press this button again to turn off the microphone. The microphone
indicator is extinguished.
Recording output terminal [REC OUT] (Phone jack)
Connects to the AR-71B alternating recording
machine, etc.
AC inlet
Connects to the supplied power cord.
Power switch [POWER]
Power is switched on and off with each
depression of this switch.
Voltage selector switch
Set this switch to the 220 V position when the power
voltage is 220 VAC. (Factory-preset for 230 VAC.)
Expansion switch (with lock)
Used when converting the center amplifier into
the expansion amplifier.
4.3. Chairman Unit TS-701 [Front panel]
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Speaker
Outputs the speaker's voice. Adjust the volume with the center
amplifier's LINE volume control. The speaker is temporarily
disabled while the microphone in-use indicator is on.
Gooseneck microphone
Keep your mouth 10-1 cm away from the microphone when
speaking. Because the orientation of the microphone can be
changed, set the microphone in the best position. The microphone
can be removed when put unit away.
Microphone in-use indicator
Lights when the microphone can be used.
Talk button [TALK]
Press this button to speak. The microphone in-use indicator lights.
Press this button again to turn off the microphone. The microphone
indicator is extinguished.
4.5. Rear Panels of The Chairman Unit and Delegate Unit
Recording output jack [REC OUT]
Connects to a recording machine when recording
the contents of the conference.
4.4. Delegate Unit TS-702
[Front panel]
Line connection terminal [LINE]
Connects to the supplied cord.
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5. OPERATIONS
5.1. Using The Conference Unit
1. Press the TALK button.
The microphone in-use indicator lights, and the microphone can be
used.
2. Speak into the microphone.
3. Press the TALK button again after speech completion.
(The microphone in-use indicator is extinguished.)
5.2. Making Priority Speech
(Chairman Unit TS-701 Only)
When wishing to make priority speech while the delegate unit is in use,
this can be accomplished by pressing the PRIORITY button. The
microphone in-use indicator lights, and the chairman unit can be used.
In this event, the speaker is disabled. When the button is pressed, a
single-tone chime is sounded at the remaining conference units.
(Adjust the chime volume with the center amplifier's chime volume
control.)
1. Press the PRIORITY button.
2. Speak while holding down the button.
(None of other conference units can be used while the button is
pressed.)
3. Release the PRIORITY button after speech completion.
The microphone indicator is extinguished, turning on the speaker.
Note
In the system employing two or more chairman units, while one unit is
making priority speech, any other chairman unit can also make priority
speech although a single-tone chime is not sounded.
Any previous speech that has been overridden by the priority speech is
not restored even after priority speech completion. Press the TALK
button again.
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5.3. Mic-off Function
Delegate unit microphones can be set to automatically turn off if a speaker forgets to turn it off after use.
Whenever a break in speech exceeds a specified period of time, the center amplifier presumes speech
completion and automatically turns off the microphone.
The break time can be set for either 20 or 40 seconds using the center amplifier's mic-off setting switch (TIME
OUT). Set the switch to OFF if this function is unnecessary.
Center amplifier (TS-700) front panel
The OFF position disables
the mic-off function
Set the break time that turns
off the microphone.
Example: The mic-off switch is set to 20s position
1. Turn on the microphone, and speak.
2. Leave the microphone on after speaking.
3. The microphone automatically turns off after 20 seconds.
Note
When the mic-off function is selected, any break in speech exceeding the preset time will automatically turn off
the microphone, even if speech is not yet finished. Therefore, for conferences in which long breaks in speech
are expected, set the mic-off setting switch to the OFF position.
In areas with high levels of background noise, the center amplifier may mistake the noise to be speech and
the mic-off function will not operate correctly. In such cases, the mic-off function should be disabled by placing
the switch in the OFF position.

5.4. Limiting The Number of Simultaneously Usable Delegate Units (TS-702)
Using the center amplifier's speaker restriction switch (MIC LIMITER), the number of simultaneously-usable
delegate units (TS-702) can be limited. Set the switch to 1, 2, 4 or 6 depending on the conference scale.
Center amplifier (TS-700) front panel
MIC LIMITER
Sets the number of delegate units that
can be used simultaneously.
Example: The speaker restriction switch is set to the "2" position.
Two delegate units can be used simultaneously. Other delegate units cannot be used even if the TALK button
is pressed.
Center amplifier
(TS-700) front panel
The MIC LIMITER
switch is set to "2".
Delegate unit Delegate unit Delegate unit
Not usable
If only one delegate unit is in use, up to one more delegate unit can be used.
Two delegate units are in use.
Other delegate units cannot be used
even if the TALK button is pressed.
Center amplifier
(TS-700) front panel
The MIC LIMITER
switch is set to "2".
Delegate unit Delegate unit Delegate unit
Usable
One delegate unit is in use.
One more delegate unit can be used.
The chairman unit can be used at any time regardless of the limitation of the number of usable
delegate units.
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5.5. Recording
The contents of the conference can be recorded by connecting the AR-71B alternate cassette recorder or
other cassette recorder.
1. Connect the center amplifier's recording output to the recorder's recording input. (The connection cable is
separately needed.)
Recording output
(REC OUT)
Recording input
Recording output
(REC OUT)
Center amplifier
(TS-700) rear panel
Alternate recording deck
AR-71 B
Center amplifier
(TS-700) rear panel
Recording input
Other recorder
2. Connect a set of headphones into the recorder's monitor output to confirm that the contents of the
conference are being recorded correctly. Adjust the recorder's recording level control.
Alternate recording deck
Monitor output
For operation of the recorder, refer to the instruction manual attached to the recorder.
The conference unit's rear-mounted recording output can also be used for recording.
Conference unit's rear-mounted
recording output
Cassette recorder
Note
It is possible to change the volume of the conference units recording output by means of the center amplifier's
line volume control. When only recording and not amplifying speech from the conference unit, the recording
output cannot be used. For such purposes, use the center amplifier's recording output.
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6. INSTALLATIONS AND CONNECTIONS
1. Connect the center amplifier to all conference units using the supplied connection cords. When connecting,
take care to ensure correct orientation of the cord as shown below.
ote that the system does not operate if the cords are connected in reverse orientation. Space the
conference units 1.5-2 m apart.
Center amplifier (TS-700) rear panel Conference unit rear panel Conference unit rear panel
Line 1 terminal and Line 2 terminal
Junction box
Connect a 2 m cord to the junction box.
Line connection
terminal
Line connection
terminal
Connect a 1 m cord
to the conference
unit.
2. Using the center amplifier's front-mounted switch, set the number of simultaneous speakers. (Refer to p. 9
" .4. Limiting the Number of Simultaneously Usable Delegate Units (TS-702)".
Center amplifier (TS-700) front panel
Example: Set to 2
MIC LIMITER
3. Turn on the chairman unit microphone and those of the delegate units of the number set in Step 2 above.
Speaking into the microphones, adjust the microphone volume using the center amplifier's line volume
control (LINE).
Line volume control (LINE)
Center amplifier
(TS-700)front panel
Delegate unit
TS-702
Chairman unit
TS-701
Delegate unit
TS-702
Connect a 2 m cord to the
center amplifier.
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4. Confirm that no feedback is produced when each microphone to use is tested. If feedback is produced,
either widen the spacing of conference units or decrease the volume with the line volume control.
. Press the chairman unit's PRIORITY button to sound a single-tone chime and adjust its volume with the
chime volume control located on the center amplifier rear panel.
Chime volume control (CHIME)
Center amplifier (TS-700)
rear panel
Delegate unit
TS-702
Delegate unit
TS-702
Chairman unit TS-701
Priority button
(PRIORITY)
6. When connecting a microphone and a background music machine to the center amplifier, adjust their sound
volume with their respective volume controls on the amplifier.
Microphone
Center amplifier (TS-700)
front panel
Background music machine
7. To record the contents of the conference, connect the center amplifier's recording output terminal to the
recorder's recording input terminal.
Recording output
(REC OUT)
Recording input
Recording output
(REC OUT)
Recording input
Center amplifier
(TS-700) rear panel
Alternate cassette deck
AR-71B
Center amplifier
(TS-700) rear panel
Other cassette recorder
Line output
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7. SYSTEM EXPANSION
By adding the center amplifier as the expansion amplifier, the conference units can be expanded.
An optional extension cord YR-700 is required when connecting the expansion amplifier.
1. Loosen a lock screw on the expansion switch located on the center amplifier rear panel, and change the
setting from the MAIN position to the EXPANSION position. Re-tighten the lock screw after the change.
Expansion switch
Set to the MAIN position.
Expansion switch
Set to the EXPANSION position.
Lock screw MAIN Lock screw MAIN
Center amplifier (TS-700) rear panel
2. Using the extension cord, connect the center amplifier's line 1 or line 2 terminal to the expansion amplifier's
line 1 terminal.
Extension cord YR-700
MAIN position
To line 1 or line 2
EXPANSION position
To line 1
Center amplifier
Expansion amplifier
Speaker restriction switch
Only the center amplifier's speaker restriction switch is valid.
Place the expansion amplifier's switch in the [1] position.
Mic-off setting switch
Place the switch in the same position as the center amplifier.
Chime volume control
Place the expansion amplifier's chime volume control in the [0] position.
Use the center amplifier's chime volume control to adjust the chime volume.
3. Set the expansion amplifier as follows:
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4. Connect the conference units. Up to 3 units can be connected per expansion amplifier. One each of the
expansion amplifier can be connected to the center amplifier's line 1 and line 2 terminals.
Expansion amplifier Center amplifier Expansion amplifier
rear panel rear panel rear panel
To LINE 1
To LINE 2
To LINE 1
To LINE 2
Up to 3 units
Up to 3 units
Up to 3 units
Up to 3 units
Maximum
100m
A total of 140 conference units can be connected.
Notes on expansion amplifier connections
The use of the expansion amplifier's input and output terminals is restricted as follows:
• MIC, AUX1, and AUX 2: Can be used in the same manner as the center amplifier.
• Recording output: Cannot be used. When recording, use the recording output on the center amplifier
or conference unit.
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. BLOCK DIAGRAM
Chairman unit
TS-701
Delegate unit
TS-702
Center amplifier
TS-700
Bias
Recording
Speaker
Line
Recording
Speaker
Line
Talk switch
Bias
Microphone control
Speaker control
Speech duration
Priority control
LED control
LEO control
Microphone control
Speaker control
Speech duration Priority control
Talk switch
MIC
Recording output
LINE
AUX1
Lines 1 and 2
Number of
speakers
Chime
Priority control
Speech duration
Power indicator
Regulator
CHIME
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Power Source
220 V/230 VAC changeable, 0/60 Hz
Power Consumption
Max. 13 W
Input
Microphone
600 , -60 dBV, unbalanced
10k , -20dBV, unbalanced
600 , 0 dBV, unbalanced
AUX1
AUX2
Lines 1 & 2
Recording
Lines 1 & 2
Priority speech chime
Speaker restriction
Automatic mic-off
Operating Temperature Range
Dimensions
Finish
Weight
0 dBV, unbalanced
10k , 20 dBV, unbalanced
0 dBV, unbalanced
Single tone
Number of simultaneously-usable delegate units can be limited to 1, 2,4,
or 6.
Function OFF/20 sec/40 sec (selectable)
0 °C to +40 °C
210 (w) X 93 (h) X 316 (d) mm
Colored steel plate, semi-mat black
3.9kg
Accessories
Power cord 1
[TS-701 and TS-702]
Power Source 3 VDC, under 30 mA supplied from center amplifier
Gooseneck Microphone Unidirectional condenser type with LED (detachable)
Line
0 dBV, unbalanced
10k , -20 dBV, unbalanced
130 ,200mW
Recording
Speaker
Microphone switch
Priority switch
(TS-701 only)
Output
Control
Operating Temperature Range
Microphone/speaker on-off control
Chairman unit microphone/speaker on-off, other microphone cutoff, and
single-tone chime activation
0°C to +40°C
210(w)X93(h)X316(d)mm
Dimensions
Finish Base : ABS resin, semi-mat black (Munsel N1.0)
Speaker: Metallic brown
Weight 60 g
Accessories
Connection cord of 1 m X 2 m branch (with two 8p DIN plugs and 1 socket) 1
Note: The design and specifications are subject to change without notice for improvement.
Output
Control
9. SPECIFICATIONS
[TS-700]
16

10. DIMENSIONAL DIAGRAM (Unit: mm)
[Center Amplifier TS-700]
[Chairman Unit TS-701]
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[Delegate unit TS-702]
[Connection cord] (Supplied with the TS-701 and TS-702)
[Extension cord YR-700] (Option)
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11. TROUBLESHOOTING
No output from conference unit
speaker.
Connection cord is not correctly
connected.
Connect 1m cable to conference
unit, 2m cable to center amplifier,
and extension cord to junction box.
Center amplifier's (TS-700) line
volume control (LINE) is set to
minimum position.
Set line volume control to
appropriate position.
Microphone LED does not light
when conference unit's talk button
(TALK) is pressed.
Priority speech In progress.
Press talk button after priority
speech completion.
Press talk button after one of busy
delegate units is finished.
Delegate units (TS-702) of number
set with speaker restriction switch
(MIC LIMITER) are all in use.
Microphone LED is extinguished
during speech.
Priority button (PRIORITY) is
pressed.
Press talk button (TALK) again
after priority speech completion.
There is longer break in speech
than time set with mic-off setting
switch (TIME OUT).
Set mic-off setting switch to OFF if
long break in speech is expected
in conference.
Single-tone chime does not sound
when priority button (PRIORITY) is
pressed.
Line volume control (LINE) located
on center amplifier's front panel
and chime volume control (CHIME)
on rear panel are both set to
minimum position.
Set volume controls to appropriate
position.
Automatic mic-off function does
not operate.
Air-conditioner produces noise.
Automatic mic-off function may not
operate in areas with high levels of
background noise. Either install
conference units in quieter room or
set mic-off setting switch (TIME
OUT) to OFF.
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