Toa YA-7000 User Manual
OPERATING INSTRUCTIONS
Thank you for purchasing TOA's Power Amplifiers.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
POWER AMPLIFIERS
AMPLIFIER AUTO SWITCHING
MODULE
(Optional)
FS-7006PA
FS-7012PA
YA-7000
2
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS ................................................................................. 3
2. GENERAL DESCRIPTION .............................................................................. 5
3. FEATURES ........................................................................................................... 5
4. HANDLING PRECAUTIONS ........................................................................... 5
5. INSTALLATION PRECAUTIONS ................................................................... 6
6. NOMENCLATURE AND FUNCTIONS
6.1. FS-7006PA/7012PA Power Amplifiers
Front ................................................................................................................... 7
Rear ................................................................................................................... 8
6.2. YA-7000 Amplifier Auto Switching Module (Optional)
Front ................................................................................................................... 9
7. CONNECTIONS
7.1. Speaker Connections ....................................................................................... 10
7.2. Volume Control Bypass Control Input Connections ......................................... 10
7.3. Mounting and Connecting the YA-7000
7.3.1. YA-7000 Installation ............................................................................... 11
7.3.2. YA-7000 Connections ............................................................................ 12
7.3.3. Checking Amplifier Operation ................................................................ 14
7.4. Removable Terminal Plug Connection ............................................................. 15
8. FAILURE INDICATION .................................................................................... 16
9. DIMENSIONAL DIAGRAM ............................................................................ 17
10. BLOCK DIAGRAMS
10.1. FS-7006PA ..................................................................................................... 18
10.2. FS-7012PA ..................................................................................................... 19
10.3. YA-7000 ......................................................................................................... 20
11. SPECIFICATIONS
11.1. FS-7006PA/7012PA Power Amplifiers .......................................................... 21
11.2. YA-7000 Amplifier Auto Switching Module (Optional) ................................... 22
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When Installing the Unit
• 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.
• Be sure to replace the unit's terminal cover after
connection completion. Because the voltage of up
to 100 V is applied to the high impedance speaker
terminals, never touch these terminals to avoid
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.
• Install the unit only in a location that can
structurally support the weight of the unit and the
mounting bracket. Doing otherwise may result in
the unit falling down and causing personal injury
and/or property damage.
• Owing to the unit's size and weight, be sure that at
least two persons are available to install the unit.
Failure to do so could result in personal injury.
• Tighten each nut and bolt securely. Ensure that the
bracket has no loose joints after installation to
prevent accidents that could result in personal
injury.
When the Unit is in Use
• 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.)
1. 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.
WARNING
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
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• 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
qualified service personnel.
• 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.
When Installing the Unit
• 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 ventilation slots in the unit's cover.
Doing so may cause heat to build up inside the unit
and result in fire. Also, periodically clean the
ventilation slots of dust.
• To avoid electric shocks, be sure to switch off the
unit's power when connecting speakers.
• 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.
• When unpacking or moving the unit, be sure to
handle it with two or more persons. Falling or
dropping the unit may cause personal injury and/or
property damage.
• Be sure to follow the instructions below when rackmounting the unit. Failure to do so may cause a fire
or personal injury.
· Install the equipment rack on a stable, hard floor.
Fix it with anchor bolts or take other arrangements
to prevent it from falling down.
· When connecting the unit's power cord to an AC
outlet, use the AC outlet with current capacity
allowable to the unit.
When the Unit is in Use
• 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. Doing otherwise may cause a fire or electric
shock.
CAUTION
WARNING
5
2. GENERAL DESCRIPTION
TOA's FS-7006PA (600 W) and FS-7012PA (1,200 W) are power amplifiers designed for 100 V line and high
impedance applications. By mounting an optional YA-7000 module in the power amplifier and connecting it to
a standby amplifier, the power amplifier can be automatically switched over to the standby amplifier if the
power amplifier fails, allowing broadcasts in progress to continue uninterrupted.
3. FEATURES
• A built-in limiter circuit limits current flow if there is an electrical overload, and a protection circuit that detects
the voltage and current disconnects the output if there is a short circuit. This protection circuit also
disconnects the output if the amplifier's internal temperature rises significantly.
• Front volume control offers convenient output volume adjustment.
• Control input can bypass the volume control mounted on the front panel to allow "Urgency" announcements
to be broadcast at maximum sound volume regardless of volume setting.
• Continuously variable air-cooling system adjusts fan speed according to the temperature in the amplifier's
heat sink. This variability ensures that cooling fan noise is minimized as much as possible under normal
usage conditions.
4. HANDLING PRECAUTIONS
• Keep input cables away from output cables. Installing both cables too close to each other can potentially
generate unwanted oscillation.
• Never connect 2 or more amplifiers to each other through their outputs, as this could cause the amplifiers to
fail.
• To clean, be sure to first switch off the amplifier power, then wipe with a dry cloth. When the amplifier is very
dirty, use a cloth moistened in a neutral cleanser. Never use any volatile liquids, such as benzene, thinner,
and chemically-treated towels, since the amplifier surface could be damaged.
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5. INSTALLATION PRECAUTIONS
• To ensure proper ventilation and prevent excessive heat buildup, position the amplifier so that there is at
least 15 cm between the top and the ceiling, and at least 5 cm between the sides and any walls. Allow at
least 10 cm behind the amplifier to ensure that the fan air vent in the rear panel does not become
obstructed.
• When mounting amplifiers in an equipment rack, be sure to space them with perforated panels -- above and
below -- that are each at least 1U (44.5 mm) in height, as shown in the figure below.
• When mounting amplifiers in an equipment rack, allow at least 10 centimeters behind the amplifier to ensure
that the fan air vent in the rear panel does not become obstructed.
• Because the amplifier is heavy (24.8 kg for FS-7006PA, 35.4 kg for FS-7012PA), be sure to reinforce the
fittings used to fix the amplifier in place when mounting in a rack and requiring extra strenght.
• Rack mounting screws are not supplied with the amplifier. Use screws that are appropriate for the specific
type of rack used.
Over 15 cm
Air intake
vent
Over 5 cm Over 5 cm Over 10 cm
Perforated Panels
Front of amplifier
Power Amplifiers
FS-7006PA/7012PA
Air exhaust
vent
7
1. Power Switch
Press this switch to turn on the power. To turn off
the power, press this switch again.
2. Power Indicator
Lights when power is supplied and the FS7006PA/7012PA is ready for operation.
3. Volume Control
Adjusts the input signal level. This volume control
cannot be used while the Bypass Indicator (8)
continuously lights.
4. Fill-In Space
Write uses of the main and standby amplifiers in
this space.
5. Fault Indicator
Lights when an output muting function* is
operated or when a failure is detected.
If the YA-7000 is used, this indicator lights when
the YA-7000 detects a failure and the power
amplifier is switched over to a standby amplifier.
(See page 16.)
* This function prevents noise from being
generated when power is switched on and off.
6. Signal Indicator
Lights when a signal that exceeds a level 24 dB
below the rated output is sent to the Speaker Output
(11) on the rear panel.
7. Peak Indicator
Lights when a signal that exceeds a level of 3 dB
below the rated output is sent to Speaker Output (11)
on the rear panel.
8. Bypass Indicator
Lights when the Volume Bypass Control Input (13)
on the rear panel is enabled and indicates that the
Volume Control (3) has been bypassed and
disabled.
6. NOMENCLATURE AND FUNCTIONS
6.1. FS-7006PA/7012PA Power Amplifiers
[Front]
Figure shows the FS-7012PA.
4
7
65
8
3
2
1
8
[Rear]
Figure shows the FS-7012PA.
9. YA-7000 Receptacle
Mount an optional YA-7000 module from this
receptacle. (See page 11.)
Note
Use of the YA-7000 permits the main amplifier to
be switched over to a standby amplifier if the
main amplifier fails.
10. Power Cord
Connect this cord to the wall AC outlet (230 V
AC, 50 Hz).
11. Speaker Output Terminal (with cover)
High-impedance, 100 V line output for speaker
connections.
Note
Connect this terminal to the YA-7000 when the
YA-7000 has been mounted.
• FS-7006PA
M4 screw terminal; barrier distance: 9 mm; load
impedance: 16.7 Ω
• FS-7012PA
M4 screw terminal; barrier distance: 9 mm; load
impedance: 8.3 Ω
Note
Never connect this terminal to the speaker output
terminal of other FS-7006PA or FS-7012PA
power amplifier. Failure to follow this instruction
could lead to equipment failures.
12. Functional Earth Terminal
Connect this terminal to the functional earth
terminal of external equipment if excessive noise
is generated when the power amplifier is
connected to the external equipment. This could
reduce noise.
Note: This terminal is not for protective earth.
13.
Volume Control Bypass Control Input Terminal
Bypasses Volume Control (3) on the front panel
and allows announcements to be made at
maximum volume.
(Open voltage: under 24 V DC; short-circuit
current: under 10 mA; 2P terminal block)
14. Audio Signal Input Terminal
0 dB, 10 kΩ, balanced, 3P terminal block
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10 11 12 13 14
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