STEREO INTEGRATED AMPLIFIER RA-932
REMOTE
SENSOR
PHONES
POWER
RA-932
STEREO INTEGRATED AMPLIFIER
VOLUME
TONE
TREBLE
BASS
OFF
ON
MONITOR
SOURCE
TAPE
FUNCTION
PHONOCDTUNER
AUX
Owner’s Manual
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
APPLICABLE FOR USA, CANADA OR WHERE
APPROVED FOR THE USAGE
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE
OF PLUG TO WIDE SLOT. INSERT FULLY.
ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES,
INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE
DANS LA BORNE CORRESPONDANTE DE LA PRISE ET
POUSSER JUSQU AU FOND.
WARNING:
There are no user serviceable parts inside. Refer all servicing to
qualified service personnel.
WARNING:
To reduce the risk of fire or electrical shock, do not expose the unit
to moisture or water. Do not allow foreign objects to get into the
enclosure. If the unit is exposed to moisture, or a foreign object
gets into the enclosure, immediately disconnect the power cord
from the wall. Take the unit to a qualified service person for inspection and necessary repairs.
Read all the instructions before connecting or operating the unit. Keep this
manual so you can refer to these safety instructions.
Heed all warnings and safety information in these instructions and on the
product itself. Follow all operating instructions.
Clean the unit only with a dry cloth or a vacuum cleaner.
This symbol is to alert the user to the
presence of uninsulated dangerous
voltages inside the product's enclosure
that may constitute a risk of electric shock.
This symbol is to alert the user to important
operating and maintenance (service)
instructions in this manual and literature
accompanying the product.
You must allow 10cm, or 4 inches, of unobstructed clearance around the unit.
Do not place the unit on a bed, sofa, rug, or similar surface that could block the
ventilation slots. If the unit is placed in a bookcase or cabinet, there must be
sufficient clearance around the unit and ventilation of the cabinet to allow
proper cooling.
Keep the unit away from radiators, heat registers, stoves, or any other
appliance that produces heat.
The unit must be connected to a power supply only of the type
and voltage specified on the rear panel of the unit.
Connect the unit to the power outlet only with the supplied 2-pin polarized
power supply cable or an exact equivalent. Do not modify the supplied cable in
any way. Do not attempt to defeat grounding and/or polarization provisions. The
cable should be connected to a 2-pin polarized wall outlet, matching the wide
blade of the plug to the wide slot of the receptacle. Do not use extension cords.
Do not route the power cord where it will be crushed, pinched, bent at severe
angles, exposed to heat, or damaged in any way. Pay particular attention to the
power cord at the plug and where it exits the back of the unit.
The power cord should be unplugged from the wall outlet if the unit is to be left
unused for a long period of time.
Immediately stop using the unit and have it inspected and/or serviced by a
qualified service agency if:
• The power supply cord or plug has been damaged.
• Objects have fallen, or liquid has been spilled, into the unit.
• The unit has been exposed to rain.
• The unit shows signs of improper operation
• The unit has been dropped or damaged in any way
Place the unit on a fixed, level surface strong
enough to support its weight. Do not place the
unit on a moveable cart that could tip over.
Figure 1: Controls and Connections
STEREO INTEGRATED AMPLIFIER RA-932
REMOTE
SENSOR
POWER
1
2
3
WARNING: SHOCK HAZARD – DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
GND
LEFT
RIGHT
10
STEREO INTEGRATED AMPLIFIER RA-932
PHONES
BASS
4
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
PHONO CD TUNER AUX
TAPE
IN
11
OUT
VOLUME
MONITOR
TREBLE
5
TONE
OFF
ON
6
INTEGRATED AMPLIFIER
MODEL NO. RA-932
POWER CONSUMPTION: 180W
MAIN SPEAKERS BI-WIRING SPEAKERS
7
SPEAKER IMPEDANCE
COMBINED LOAD 4Ω MINIMUM
LEFTRIGHT
141312
15
TAPE
LEFTRIGHT
SOURCE
8
12V TRIG.
OUT
16
FUNCTION
PHONOCDTUNER
9
SWITCHED 400W MAX.
17
18
AUX
3
STEREO INTEGRATED AMPLIFIER RA-932
Figure 2: Line Level Signal, Recorder and Speaker Output Connection
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: SHOCK HAZARD – DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
PHONO CD TUNER AUX
GND
LEFT
RIGHT
TAPE
OUTIN
POWER CONSUMPTION: 180W
RECORDER
INTEGRATED AMPLIFIER
MODEL NO. RA-932
MAIN SPEAKERS BI-WIRING SPEAKER
SPEAKERS
ROTEL RA-932
SPEAKER IMPEDANCE
COMBINED LOAD 4Ω MINIMUM
LEFTRIGHT
12V TRIG.
LEFTRIGHT
SWITCHED 400W MAX.
OUT
Figure 3: Phono Input Connection
L RGND
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: SHOCK HAZARD – DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE – NE PAS OUVRIR
PHONO CD TUNER AUX
GND
LEFT
RIGHT
R L
OUTPUT
R L
OUTPUT
TAPE
R L
OUTIN
INPUT
CD PLAYER
INTEGRATED AMPLIFIER
MODEL NO. RA-932
POWER CONSUMPTION: 180W
MAIN SPEAKERS BI-WIRING SPEAKERS
PH0NO
LEFTRIGHT
SPEAKER IMPEDANCE
COMBINED LOAD 4Ω MINIMUM
ROTEL RA-932
12V TRIG.
LEFTRIGHT
SWITCHED 400W MAX.
OUT
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Contents (circled numbers refer to illustration)
About Rotel __________________________________________ 5
Getting Started ______________________________________ 5
A Few Precautions 6
Placement 6
Cables 6
AC Power and Control ________________________________ 6
AC Power Input
Power Indicator
Auxiliary Power Outlet
12 Volt Trigger Outlet
Input Signal Connections _____________________________ 7
Phono Input
Line Level Inputs
Recorder Connections
Speaker Outputs
Speaker Wire Selection 7
Polarity and Phasing 7
Speaker Connection 8
Front Panel Controls __________________________________ 8
Volume Control
Tone On/Off Switch
Bass and Treble Controls
Function Selector
Tape Monitor Control
Phones Output
Remote Sensor
Troubleshooting ______________________________________ 9
Power Indicator Is Not Lit 9
Fuse Replacement 9
No Sound 9
Specifications ________________________________________ 9
18
2
and Power Switch
17
16
11
and Ground Wire Connection
12
13
_____________________________ 7
14
and 15__________________________ 7
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3
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About Rotel
A family whose passionate interest in music led them to manufacture high fidelity components of uncompromising quality founded
Rotel over 30 years ago. Through the years that passion has remained undiminished and the family goal of providing exceptional
value for audiophiles and music lovers, regardless of their budget,
is shared by all Rotel employees.
The engineers work as a close team, listening to, and fine tuning
each new product until it reaches their exacting musical standards. They are free to choose components from around the
world in order to make that product the best they can. You are
likely to find capacitors from the United Kingdom and Germany,
semi conductors from Japan or the United States, while toroidal
power transformers are manufactured in Rotel’s own factory.
Rotel’s reputation for excellence has been earned through hundreds of good reviews and awards from the most respected reviewers in the industry, who listen to music every day. Their
comments keep the company true to its goal – the pursuit of
equipment that is musical, reliable and affordable.
All of us at Rotel thank you for buying this product and hope it will
bring you many hours of enjoyment.
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Getting Started
Thank you for purchasing the Rotel RA-932 Stereo Integrated Amplifier. When used in a high-quality music audio system, it will provide years of musical enjoyment.
The RA-932 is a full featured, high performance component. All
aspects of the design have been optimized to retain the full dynamic range and subtle nuances of your music. The RA-932 has a
highly regulated power supply incorporating a Rotel custom-designed toroidal power transformer and custom-made slit foil capacitors. This low impedance power supply has ample power
reserves, which enables the RA-932 to easily reproduce the most
demanding audio signals. This type of design is more expensive to
manufacture, but it is better for the music.
The printed circuit boards (PCB) are designed with Symmetrical
Circuit Traces. This insures that the precise timing of the music is
maintained and faithfully recreated. The RA-932 circuitry uses
metal film resistors and polystyrene or polypropylene capacitors
in important signal paths. All aspects of this design have been examined to ensure the most faithful music reproduction.
In addition the RA-932 has independent input signal selectors for
listening and recording. They allow you to listen to one signal
source while recording another.
The main functions of the RA-932 are easy to install and use. If
you have experience with other stereo systems, you shouldn’t find
anything perplexing. Simply plug in the associated components
and enjoy.
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STEREO INTEGRATED AMPLIFIER RA-932
A Few Precautions
WARNING: To avoid potential damage to your system, turn off ALL
the components in the system when connecting or disconnecting
the loudspeakers or any associated components. Do not turn the
system components back on until you are sure all the connections
are correct and secure. Pay particular attention to the speaker
wires. There must be no loose strands that could contact the
other speaker wires, or the chassis of the amplifier.
Please read this manual carefully. It provides information on how
to incorporate the RA-932 into your system as well as information
that will help you get optimum sound performance. Please contact
your authorized Rotel dealer for answers to any questions you
might have. In addition, all of us at Rotel welcome your questions
and comments.
Save the RA-932 shipping carton and all enclosed packing material for future use. Shipping or moving the RA-932 in anything
other than the original packing material may result in severe damage to your amplifier.
Fill out and send in the owner’s registration card packed with the
RA-932. Also be sure to keep the original sales receipt. It is your
best record of the date of purchase, which you will need in the
event warranty service is ever required.
Placement
Like all audio components that handle low-level signals, the RA-932
can be affected by its environment. Avoid placing the RA-932 on
top of other components. Also avoid routing audio signal cables
near power cords. This will minimize the chance it will pick up hum
or interference.
The RA-932 generates heat as part of its normal operation. The
heat sinks and ventilation openings in the amplifier are designed
to dissipate this heat. The ventilation slots in the top cover must
be open. There should be 10 cm (4 inches) of clearance around
the chassis, and reasonable airflow through the installation location, to prevent the amplifier from overheating.
Remember the weight of the amplifier when you select an installation location. Make sure that the shelf or cabinet can support it.
We recommend installing the RA-932 in furniture designed to house
audio components. Such furniture is designed to reduce or suppress vibration which can adversely affect sound quality. Ask your
authorized Rotel dealer for advice about component furniture and
proper installation of audio components.
Cables
Be sure to keep the power cords, digital signal cables and regular
audio signal cables in your installation away from each other. This
will minimize the chance of the regular audio signal cables picking up noise or interference from the power cords or digital
cables. Using only high quality, shielded cables will also help to
prevent noise or interference from degrading the sound quality of
your system. If you have any questions see your authorized Rotel
dealer for advice about the best cable to use with your system.
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AC Power and Control
AC Power Input
The RA-932 does not draw high levels of current from the power
outlet. However, when ever possible, it should be plugged directly
into a 2-pin polarized wall outlet. Do not use an extension cord. A
heavy duty multi-tap power outlet strip may be used if it (and the
wall outlet) can handle the current demanded by the RA-932 and
all the other components connected to it.
Your RA-932 is configured at the factory for the proper AC line
voltage in the country where you purchased it (either 115 volts AC
or 230 volts AC with a line frequency of either 50 Hz or 60 Hz). The
AC line configuration is noted on a decal on the back panel.
Note: Should you move your RA-932 amplifier to another country,
it is possible to reconfigure it for use on a different line voltage.
Do not attempt to perform this conversion yourself. Opening the
enclosure of the RA-932 exposes you to dangerous voltages. Consult a qualified service person or the Rotel factory service department for information.
If you are going to be away from home for an extended period of
time such as a month-long vacation, it is a sensible precaution to
unplug your amplifier (as well as other audio and video components) while you are away.
Power Indicator 2 and Power Switch
Push in the Power Switch button to turn the RA-932 on. The Power
Indicator light is illuminated when the RA-932 is on. Press and release the Power Switch button again to turn the RA-932 off.
Auxiliary Power Outlet 17 (U.S.A. version only)
The RA-932 has a switched power outlet on the back panel. Power
is available from this outlet when the RA-932 is turned on. This
outlet can provide up to 150 watts. It is appropriate for supplying
power to signal source, such as a CD player, tuner, or tape deck.
Do not connect a power amplifier to this power outlet. Connecting a component that draws more than 150 watts to this outlet
could damage the Power Switch of the RA-932.
12 Volt Trigger Outlet
Some audio components can be turned on automatically when
they receive a 12V turn on “signal”. The 12V Trigger Output of
RA-932 provides the required signal. Connect the compatible components to the RA-932 with a conventional 1/8” miniplug cable.
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Input Signal Connections
The RA-932 has conventional RCA type input connectors, the type
found on nearly all audio equipment.
Note: To prevent loud noises that neither you nor your speakers
will appreciate, make sure the system is turned off when you
make any signal connections.
Phono Input 11 and Ground Wire Connection
[See Figure 3 for phono input connection illustration.]
Plug the cable from the turntable into the appropriate left and
right phono inputs. Most turntables also have a “ground” wire.
Connect it to the screw terminal to the left of the Phono inputs. It
will help prevent hum and noise.
Line Level Inputs
[See Figure 2 for line level input connection illustration.]
The CD, Tuner, and Aux inputs of the RA-932 are all “line level” inputs. These are for connecting components such as CD players,
Hi Fi or NICAM Stereo video cassette recorders, tuners for audio
or video, Laser Disc players or the analog output from a CD ROM
drive. Figure 2 shows a CD player connected to the CD inputs.
Other components are connected in the same way.
The Left and Right channels are clearly labeled and should be
connected to the corresponding channels of the source component. The Left RCA connectors are white, the Right connectors
are red. Use high quality RCA cables for connecting input source
components to the RA-932. Ask your authorized Rotel dealer for
advice about cables.
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Speaker Outputs 14 and
[See Figure 2 for speaker connection illustration.]
The RA-932 has two sets of speaker outputs, labeled MAIN
and BI-WIRING 15. Both sets of speaker outputs are “live” at all
times. They are wired in parallel. The combined minimum impedance load for the speakers connected to the RA-932 must be at
least 4 ohms. If only one pair of speakers is connected, virtually
any speaker may be used. However, if two pairs of speakers are
connected, all the speakers should have an impedance of 8 ohms
or higher. S ee your authorized Rotel dealer if you have any questions.
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Speaker Wire Selection
Use insulated two-conductor stranded wire to connect the RA-932
to the speakers. The size and quality of the wire can have an audible effect on the performance of the system. Standard speaker
wire will work, but can result in lower output or diminished bass
response, particularly over longer distances. In general, heavier
wire will improve the sound. For best performance, you may want
to consider special high-quality speaker cables. Your authorized
Rotel dealer can help in the selection of cables for your system.
Polarity and Phasing
The polarity – the positive/negative orientation of the connections –
for every speaker and amplifier connection must be consistent so
all the speakers will be in phase. If the polarity of one connection
is reversed, bass output will be very weak and stereo imaging degraded. All wire is marked so you can identify the two conductors.
There may be ribs or a stripe on the insulation of one conductor.
The wire may have clear insulation with different color conductors (copper and silver). There may be polarity indications printed
on the insulation. Identify the positive and negative conductors
and be consistent with every speaker and amplifier connection.
Recorder Connections
[See Figure 2 for recorder connection illustration.]
The Tape inputs and outputs can be connected to any record/
playback device that accepts standard line level analog input and
output signals. Typically that will be a conventional tape recorder.
When connecting a recorder to the RA-932 remember that the
outputs
of the recorder must be connected to the tape
the RA-932. Similarly the tape
inputs
nected to the
sure to connect the Left and Right channels of each device to the
proper channels on the associated components. Use high quality
connecting cables to prevent loss of sound quality.
of the recorder. As with other sources be
outputs
13
of the RA-932 must be con-
inputs
of
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STEREO INTEGRATED AMPLIFIER RA-932
Speaker Connection
Turn off all the components in the system before connecting the
speakers. The RA-932 has color-coded binding post type speaker
connectors on the back panel (except in European Community
countries where their use is not permitted). These connectors accept bare wire, connector lugs, or dual banana type connectors.
Route the wire from the RA-932 to the speakers. Give yourself
enough slack so you can move the components to allow access to
the speaker connectors.
If you are using dual banana plugs, connect them to the wires and
then plug into the backs of the binding posts. The thumbscrews of
the binding posts should be screwed in all the way (clockwise).
If you are using terminal lugs, connect them to the wires. If you are
attaching bare wires directly to the binding posts, separate the wire
conductors and strip the insulation from the end of each conductor .
Be careful not to cut into the wire strands. Unscrew (turn counterclockwise) the binding post thumbscrews. Place the connector
lug or wire around the binding post shaft. Turn the thumbscrews
clockwise to clamp the connector lug or wire firmly in place.
Note: Be sure there are no loose wire strands that could touch
adjacent wires or connectors.
Tone On/Off Switch
When the Tone Switch is in the Off position the Bass and Treble
Control (Tone Control) circuits are bypassed to ensure the purest
possible sound. Leave the Tone Switch in the Off position unless
you want to use the Tone Controls. Turn the Tone Switch to the On
position if you want to adjust the Tone Controls.
Bass and Treble Controls
When the Tone Switch is in the On position, turning the Bass and
Treble Controls adjusts the tone balance of the sound. Turn the
Controls
Controls
A properly set up high-performance audio system produces the
most natural sound with little or no adjustment of the tone controls. Use these controls sparingly. Be particularly careful when
turning the controls up (clockwise). This increases the power output in the bass or treble range, increasing the load on the amplifier and speakers.
clockwise
counterclockwise
Function Selector
The setting of the Function Selector controls which of the input
signal is heard, as long as the Tape Monitor switch is in the
“Source” postion. (See the following section.)
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5
to increase the bass or treble output. Turn the
to decrease the bass or treble output.
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Front Panel Controls
Volume Control
The Volume control is a standard control.
Turn the control
volume, or
the volume.
The volume of the RA-932 can also be controlled with the small remote control that is
provided with it, the RR-AT91. Press the
right side of the area labeled <
increase the voume level. Press the left
side of the button to decease the volume
level.
counterclockwise
Mute Control (remote only)
To temporarily mute the sound of the system press the MUTE button
on the RR-AT91 remote. Press the button again to return the sound
to the original volume level. The LED in the Volume Control will
blink when the sound is muted.
Standby On/Off (remote only)
When the Power switch is on, the RA-932 will go to Standby Mode
when the
Volume control will turn off. Press the
turn the unit to normal operating mode.
STANDBY button on the remote is pressed. The LED in the
7
clockwise
to increase the
to decrease
VOLUME> to
STANDBY button again to re-
Tape Monitor Control
Normally the Tape Monitor Switch should be set to the “Source”
position. Then the source you hear will be the one selected by the
Function Selector. To listen to a tape recording, or to monitor a recording in-progress with a tape recorder that provides that function, set the control to the “Tape” position.
Phones Output
The Phones output allows you to connect headphones for private
listening. This output accommodates standard stereo phone (1/4”)
plugs. If your headphones have another type of plug, such as a
1/8” mini-plug, you will need an adapter plug. Contact your authorized Rotel dealer, to get the correct adapter plug. Plugging in a
set of headphones cuts off the signal to the speaker outputs.
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Note: Because the sensitivity of speakers and headphones can
vary widely, always reduce the volume level before connecting or
disconnecting headphones.
Remote Sensor
The Remote Sensor is located above the Power Indicator on the
front panel. It picks up the infra-red signals from the remote control. Do not cover or block the sensor. It must be clear of obstructions or the remote control will not work properly. The operation of
the Remote Sensor can also be affected if it is exposed to bright
light, particularly sun light. In addition remote control functions
may not work reliably if the batteries in the RR-AT91 are weak.
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Troubleshooting
Most difficulties in audio systems are the result of incorrect connections, or improper control settings. If you encounter problems,
isolate the area of the difficulty, check the control settings, determine the cause of the fault and make the necessary changes. If
you are unable to get sound from the RA-932 refer to the suggestions for the following conditions:
Power Indicator Is Not Lit
The Power Indicator should be lit whenever the RA-932 is plugged
into the wall power outlet and the Power Switch is pushed in. If it
does not light, test the power outlet with another electrical device, such as a lamp. Be sure the power outlet being used is not
controlled by a switch that has been turned off.
Fuse Replacement
If another electrical device works when plugged into the power
outlet, but the Standby Indicator still will not light when the
RA-932 is plugged into the wall outlet, it indicates that the internal
power fuse may have blown. If you believe this has happened,
contact your authorized Rotel dealer to get the fuse replaced.
No Sound
Check the signal source to see if it is functioning properly. Make sure
the cables from the signal source to the RA-932 inputs are connected
properly. Be sure the Listening Selector is set to the proper input.
Check the wiring between the RA-932 and the speakers.
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Specifications
Continuous Power Output 35 watts/ch
(20-20 kHz, < 0.03%, 8 ohms)
Total Harmonic Distortion (20Hz-20kHz) < 0.03% at rated power,
1/2 power or 1 watt
Intermodulation Distortion (60 Hz : 7 kHz, 4:1) < 0.03% at rated power,
1/2 power or 1 watt
Frequency Response
Phono Input 20Hz-15kHz, ±0.3dB
Line Level Inputs 10Hz-40kHz, ±1dB
Damping Factor (20-20,000 Hz, 8 ohms) 180
Input Sensitivity / Impedance
Phono Input 2.5mV / 47 kOhms
Line Level Inputs 150 mV / 20 kOhms
Input Overload
Phono Input 180mV
Line Level Inputs 5V
Tone Controls - Bass /Treble ±6 dB at 100Hz / 10kHz
Signal to Noise Ratio (IHF “A” weighted)
Phono Input 80 dB
Line Level Inputs 100 dB
Power Requirements
USA Version 115 Volts, 60 Hz
European Version 230 Volts, 50 Hz
Power Consumption 180 Watts
Dimensions (W x H x D) 440 x 92 x 347 mm
173/8 x 35/8 x 1311/16”
Weight (net) 5.5 kg, 12.1 lbs.
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.
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RA-932
STEREO INTEGRATED AMPLIFIER
The Rotel Co. Ltd.
10-10 Shinsen-Cho
Tokyo 150-0045
Phone: +81-3-5458-5325
Fax: +81-3-5458-5310
Shibuya-Ku
Japan
082 OMRA-932 102299
Rotel of America
54 Concord Street
North Reading, MA 01864-2699
USA
Phone: +1 978-664-3820
Fax: +1 978-664-4109
Rotel Europe
Meadow Road
Worthing, West Sussex BN11 2RX
England
Phone: +44 1903-524-813
Fax: +44 1903-524-831
Rotel Deutschland
Kleine Heide 12
D-33790 Halle/Westf.
Germany
Phone: +49 5201-87170
Fax: +49 5201-73370
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