Rotel RC-971 User Manual
RC-971
STEREO CONTROL AMPLIFIER
PRÉAMPLIFICATEUR STÉRÉO
STEREO-VORVERSTÄRKER
PREAMPLIFICATORE STEREO
PREAMPLIFICADOR ESTEREOFONICO
STEREO VOORVERSTERKER
STEREO CONTROL AMPLIFIER RC-971
POWER PHONES BASS TREBLE
Owner’s Manual
Manuel de l’utilisateur
Bedienungsanleitung
Manuale di Istruzioni
VOLUME L R
TONE
OFF
ON
TUNER
RECORDING
OFF
CD
AUX
TAPE 1
LISTENING
TUNERCDAUX
TAPE 1
TAPE 2
Manual de Instrucciones
Gebruiksaanwijzing
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.
Keep the ventilation inlets on the unit unobstructed. For example, 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
VOLUME L R
LISTENING
TUNERCDAUX
TAPE 1
TAPE 2
RECORDING
TUNER
OFF
CD
AUX
TAPE 1
STEREO CONTROL AMPLIFIER RC-971
POWER PHONES BASS TREBLE
OFF
TONE
ON
1
2
3
7
8
6
4
5
Commandes et branchements
Bedienelemente und Anschlüsse
Controlli e Collegamenti
Controles y Conexiones
De bedieningsorganen en de ingangen voor de bronnen
STEREO CONTROL AMPLIFIER RC-971
SWITCHED
AC 3.3A 400W MAX
12
13
TAPE 1
LEFT
RIGHT
SERIAL NO.
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
AUXCD TUNER TAPE 2
IN OUT
9
IN OUT
10 11
LEFT
RIGHT
OUTPUTS
12
CONTROL AMPLIFIER
MODEL NO. RC-971
POWER CONSUMPTION: 10W
Figure 2: Output Connections
Prises de sortie
Anschluß einer Endstufe
Collegamenti d’uscita
Conexiones de Salida
De verbindingen met de eindversterker
SERIAL NO.
RIGHT
SWITCHED
AC 3.3A 400W MAX
TAPE 1
LEFT
AUXCD TUNER TAPE 2
IN OUT
IN OUT
LEFT
RIGHT
OUTPUTS
12
CONTROL AMPLIFIER
MODEL NO. RC-971
POWER CONSUMPTION: 10W
ROTEL RC-971
ROTEL RB-981
WARNING:
TO REDUCE THE RISK OF FIRE
OR ELECTRICAL SHOCK, DO NOT EXPOSE
THIS EQUIPMENT TO RAIN OR MOISTURE.
SPEAKER IMPEDANCE
STEREO 4 OHMS MINIMUM
BRIDGED 8 OHMS MINIMUM
SPEAKERS
LEFTRIGHT
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS:
RISQUE DE CHOC ELECTRIQUE–NE PAS OUVRIR
POWER AMPLIFIER
MODEL NO. RB-981
POWER CONSUMPTION: 400W
LEFT INPUTRIGHT INPUT
SERIAL NO.
3
Figure 3: Line Level Input Connection
Branchement des sources niveau Ligne
Anschluß eines CD-Players
Collegamenti ingresso linea
Conexiones de Nivel de Línea
De verbindingen met de lijnniveaubronnen
STEREO CONTROL AMPLIFIER RC-971
OUTPUT
L R
TAPE 1
AUXCD TUNER TAPE 2
IN OUT
SERIAL NO.
LEFT
RIGHT
IN OUT
CD PLAYER
LEFT
RIGHT
OUTPUTS
12
CONTROL AMPLIFIER
MODEL NO. RC-971
POWER CONSUMPTION: 10W
ROTEL RC-971
SWITCHED
AC 3.3A 400W MAX
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Figure 4: Recorder Connections
Branchements d’un magnétophone
Anschluß eines Recorders
Collegamenti registratore
Conexión de Componentes de Grabación
De verbindingen met een opname/weergave apparaat
RECORDER
TAPE 1
IN OUT
INPUT
L R
IN OUT
LEFT
RIGHT
OUTPUTS
12
CONTROL AMPLIFIER
MODEL NO. RC-971
POWER CONSUMPTION: 10W
ROTEL RC-971
SWITCHED
AC 3.3A 400W MAX
SERIAL NO.
RIGHT
OUTPUT
L R
LEFT
AUXCD TUNER TAPE 2
4
English
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
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 Switch
Auxiliary Power Outputs
Input Signal Connections
Recorder Connections
Output Connections
Front Panel Controls __________________________________ 7
Volume Control
Tone On/Off Switch
Bass and Treble Controls
Listening Selector
Recording Selector
Phones Output
Troubleshooting ______________________________________ 8
Power Indicator Is Not Lit 8
Fuse Replacement 8
No Sound 8
Specifications _______________________________________ 30
13
2
and Power Indicator
12
9
_________________________ 7
10
____________________________ 7
11
______________________________ 7
6
5
4
8
7
3
1
6
6
6
7
7
7
8
8
8
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
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.
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Getting Started
Thank you for purchasing the Rotel RC-971 Stereo Control Amplifier. When used in a high-quality music audio system, it will provide years of musical enjoyment.
The RC-971 is a full featured, high performance preamplifier. All
aspects of the design have been optimized to retain the full dynamic range and subtle nuances of your music. The RC-971 has a
highly regulated power supply incorporating a Rotel custom-designed power transformer. This low impedance power supply has
ample power reserves, which enables the RC-971 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 RC-971 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 RC-971 circuitry
uses metal film resistors and polystyrene or polypropylene capacitors in important signal paths. All aspects of this design have
been examined with the final goal being faithful reproduction of
music.
The RC-971 is straightforward in its installation and operation. If
you have experience with other stereo systems, you shouldn’t find
anything perplexing. Simply plug in the associated components
and enjoy.
5
STEREO CONTROL AMPLIFIER RC-971
A Few Precautions
Please read this manual carefully. It provides complete information on how to incorporate the RC-971 into your system as well as
general 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 RC-971 shipping carton and all enclosed packing material for future use. Shipping or moving the RC-971 in anything other
than the original packing material may result in severe damage to
your amplifier.
Your RC-971 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 RC-971 amplifier to another country,
it is possible to reconfigure your amplifier for use on a different
line voltage. Do not attempt to perform this conversion yourself.
Opening the enclosure of the RC-971 exposes you to dangerous
voltages. Consult a qualified service person or the Rotel factory
service department for information.
Fill out and send in the owner’s registration card packed with the
RC-971. 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
RC-971 can be affected by its environment. Do not stack the
RC-971 on top of a power amplifier. This will minimize chance it
will pick up hum or interference. We recommend installing the
RC-971 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
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 Switch 2 and Power Indicator
The Power switch is located on the left side of the front panel.
When it is pushed in the RC-971 is turned on and the Power Indicator light is illuminated. Press the Power switch again to turn the
RC-971 off.
1
Auxiliary Power Outputs 12 (U.S.A. version)
The RC-971 has two switched outlets on the back panel. Power is
available from these outlets when the RC-971 is turned on. These
outlets can provide up to a total of 400 watts. They are appropriate for supplying power to signal sources, such as CD players,
tuners, or tape decks. They should not be used for power amplifiers. Connecting components that will draw more than 400 watts to
these outputs could damage the Standby switch in the RC-971.
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
AC Power and Control
AC Power Input
The RC-971 does not use a significant amount of power. However
there are two auxiliary power outlets on the back of the unit,
which can be used to supply power for other units. Consequently
it is usually best to plug the RC-971 directly into a 2-pin polarized
wall outlet. Avoid the use of extension cords. A heavy duty multitap power outlet strip may be used if it (and the wall outlet) is
rated to handle the current demanded by the components connected to it.
Note: Do not connect the power cord for a power amplifier to the
auxiliary power outlets on the RC-971. Power amplifiers often
draw more power than these outlets can provide.
6
13
5
English
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Input Signal Connections
[See Figure 3 for input connection illustration.]
The RC-971 has conventional RCA type input connectors, the type
found on nearly all audio equipment.
9
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.
The CD, Tuner, and Aux inputs of the RC-971 are “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.
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 RC-971. Ask your authorized Rotel dealer for
advice about cables.
Note: The addition of a Rotel RQ-970BX Phono Equalizer enables
you to connect a phonograph to the RC-971. See your authorized
Rotel dealer for more information.
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Output Connections
[See Figure 2 for RCA output connection illustration.]
The RC-971 has RCA-type output connectors that are compatible
with the inputs of most power amplifiers. Use high quality cables
and be sure to connect the Left and Right channel outputs of the
RC-971 to the correct channels of the amplifier.
Note: There are two sets of outputs on the RC-971. The second
set of outputs may be used in custom system configurations to
drive a second power amplifier or to supply a signal to a special
signal processor.
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
11
Front Panel Controls
Volume Control
The front panel Volume control is actually two separate controls.
The control knobs are “friction connected”, so both controls normally operate together. Turn the controls
the volume, or
The two controls can be operated separately by holding one control knob while turning the other. Normally this is necessary only
to compensate for problems in the program material.
6
counterclockwise
clockwise
to decrease the volume.
to increase
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Recorder Connections
[See Figure 4 for recorder connection illustration.]
The Tape 1 and Tape 2 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 RC-971 remember that the
puts
of the recorder must be connected to the tape
RC-971. Similarly the tape
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.
inputs
outputs
of the RC-971 must be con-
of the recorder. As with other sources be
10
inputs
out-
of the
Tone On/Off Switch
When the switch is in the Off position the tone control circuits are
bypassed to ensure the purest possible sound. Leave the switch in
the Off position unless you want to use the tone controls. Turn the
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
to increase the bass or treble output. Turn the
counterclockwise
4
to decrease the bass or treble output.
7
STEREO CONTROL AMPLIFIER RC-971
Listening Selector
The setting of the Listening Selector controls which of the input
signals goes to the main outputs and onto the power amplifier –
or, more simply, which source is heard.
Recording Selector
The setting of the Recording Selector controls which of the input
signals goes to the record outputs. When you are not recording,
the Recording Selector should be set to the Off position to minimize the chance of interference from other components in the
system.
Having a separate Recording and Listening selector adds a significant degree of flexibility in how you can use the RC-971. For
example by setting the Record Selector to CD and the Listening
Selector to Tuner you could record a CD onto a tape while listening to the tuner.
There is no Tape 2 position on the Recording Selector. Consequently, if you wish to duplicate (“dub”) a recording from one recorder to another, the source unit must be connected to Tape 1
input. Set the Recording Selector to Tape 1. Connect the unit recording the signal to the Tape 2 output.
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. Note: Plugging
in a set of headphones does not cut off the signal to the outputs.
The power amplifier will continue to receive a signal and the
speakers will continue to play.
8
7
3
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
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 RC-971, refer to the suggestions for the following conditions:
Power Indicator Is Not Lit
The Power Indicator should be lit whenever the RC-971 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, and the Power Indicator still will not light, 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 RC-971 inputs are
connected properly. Be sure the Listening Selector is set to the
proper input. Check the power amplifier for power and proper operation. Check all the wiring between the RC-971 and the power
amplifier, and the power amplifier and speakers.
8
11
4
Français
ATTENTION␣ :
Il n’y a à l’intérieur aucune pièce susceptible d’être modifiée par
l’utilisateur. Adressez-vous impérativement à une personne
qualifiée.
ATTENTION␣ :
Prenez garde à ce qu’aucun objet ou liquide ne tombe à l’intérieur
de l’appareil par ses orifices de ventilation␣ ; Si l’appareil est exposé
à l’humidité ou si un objet tombe à l’intérieur, couper
immédiatement l’alimentation secteur de tous les appareils.
Débrancher l’appareil des autres maillons, et adressez-vous
immédiatement et uniquement à une personne qualifiée et agréée.
Lisez les instructions - Tous les conseils de sécurité et d’installation doivent
être lus avant de faire fonctionner l’appareil. Conservez soigneusement ce
livret - Vous devez pouvoir le consulter à nouveau pour de futures références.
Respectez tous les conseils - Tous les conseils de sécurité doivent être
soigneusement respectés. Suivez les instructions - Respectez les procédures
d’installation et de fonctionnement indiquées dans ce manuel.
Entretien - L’appareil doit être nettoyé uniquement avec un chiffon sec ou un
aspirateur.
Ventilation - L’appareil doit être placé de telle manière que sa propre ventilation
puisse fonctionner. Par exemple, il ne doit pas être posé sur un fauteuil, un
canapé, une couverture ou tout autre surface susceptible de boucher ses ouïes
d’aération␣ ; ou placé dans un meuble empêchant la bonne circulation d’air
autour des orifices d’aération.
Chaleur - Cet appareil doit être placé loin de toute source de chaleur, tels que
radiateurs, chaudières, bouches de chaleur ou d’autres appareils (y compris
amplificateurs de puissance) produisant de la chaleur.
Cet appareil doit être branché sur une prise d’alimentation secteur,
d’une tension et d’un type conformes à ceux qui sont indiqués sur
la face arrière de l’appareil.
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Sommaire
(Les numéros cerclés correspondent aux illustrations)
Au sujet de Rotel ____________________________________ 10
Démarrage __________________________________________ 10
Quelques précisions 10
Positionnement 10
Câbles 10
Alimentation électrique et mise en service ____________ 11
Prise d’alimentation secteur
Interrupteur de mise sous tension
Power
1
Prises de renvoi secteur
Branchements des sources en entrée
Branchements d’un magnétophone
Branchements en sortie
Face avant␣ : les commandes principales _______________ 12
Commande de volume
Mise hors service des correcteurs de timbre
Correcteurs de timbre
Sélecteur de la source en lecture
Sélecteur de la source en enregistrement
Prise casque
3
Problèmes de fonctionnement _______________________ 12
La diode Power ne s’allume pas 12
Remplacement du fusible 12
Pas de son 12
Spécifications _______________________________________ 30
13
2
et indicateur
11
11
12
9
_____________ 11
10
_______________ 11
11
__________________________ 11
6
5
12
12
12
8
7
12
12
12
Brancher l’appareil uniquement grâce au cordon secteur fourni, ou à un
modèle équivalent. Ne pas tenter de modifier ou changer la prise. Notamment,
ne pas tenter de supprimer la prise de terre si celle-ci est présente. Ne pas
utiliser de cordon-rallonge.
Prendre garde à ce que ce cordon d’alimentation ne soit pas pincé, écrasé ou
détérioré sur tout son trajet, à ce qu’il ne soit pas mis en contact avec une
source de chaleur. Vérifier soigneusement la bonne qualité des contacts, à
l’arrière de l’appareil comme dans la prise murale.
Si l’appareil ne doit pas être utilisé pendant une longue période, la prise
secteur sera débranchée.
Service après vente - L’appareil doit être immédiatement éteint, débranché puis
retourné au service après-vente agréé dans les cas suivants␣ :
• Un objet est tombé, ou du liquide a coulé à l’intérieur de l’appareil.
• L’appareil a été exposé à la pluie.
• L’appareil ne fonctionne pas normalement, ou ses performances sont
anormalement limitées.
• L’appareil est tombé, ou le coffret est endommagé.
Placer l’appareil sur une surface plane, solide et rigide. Ne jamais placer
l’appareil sur une surface ou un support mobile pouvant basculer.
9
PRÉAMPLIFICATEUR STÉRÉO RC-971
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Au sujet de Rotel
C’est une famille de passionnés de musique qui a fondé Rotel, il y
a maintenant plus de trente ans. Pendant toutes ces années, leur
passion ne s’est jamais émoussée et tous les membres de la
famille se sont toujours battus pour fabriquer des appareils
présentant un exceptionnel rapport musicalité-prix, suivis en cela
par tous les employés.
Les ingénieurs travaillent toujours en équipe réduite, écoutant et
peaufinant soigneusement chaque appareil pour qu’il
corresponde parfaitement à leurs standards musicaux. Ils sont
libres de choisir n’importe quels composants dans le monde
entier, uniquement en fonction de leur qualité. C’est ainsi que
vous trouvez dans les appareils Rotel des condensateurs
britanniques ou allemands, des transistors japonais ou
américains, tandis que tous les transformateurs toriques sont
directement fabriqués dans une usine Rotel.
L’excellente réputation musicale des appareils Rotel a été saluée
par la plupart des magazines spécialisées␣ ; ils ont reçu
d’innombrables récompenses, et sont choisis par de nombreux
journalistes-critiques du monde entier, parmi les plus célèbres,
ceux qui écoutent de la musique quotidiennement. Leurs
commentaires restent immuables␣ : Rotel propose toujours des
maillons à la fois musicaux, fiables et abordables.
Mais plus que tout, Rotel vous remercie pour l’achat de cet
appareil, et souhaite qu’il vous apporte de nombreuses heures de
plaisir musical.
Les circuits imprimés (PCB) sont conçus avec des trajets du signal parfaitement symétriques. Cela garantit un respect total des
composantes temporelles de la musique, là où des pistes
électriques de longueur différente pour les deux canaux
détruisent cette homogénéité temporelle. Les résistances à
couche métallique et les condensateurs au polystyrène ou
polypropylène sont spécialement choisis pour leur respect de la
musique. Le câblage interne est également réduit au minimum afin
d’obtenir la meilleure qualité sonore possible.
L’installation du RC971 est aussi simple que son utilisation. Si vous
êtes déjà habitué à une autre installation hifi, vous ne
rencontrerez aucun problème. Il suffit de brancher les maillons
complémentaires et d’écouter␣ !
Quelques précautions
Veuillez lire très soigneusement ce manuel d’utilisation. Il vous
indique tout ce qu’il faut savoir pour intégrer parfaitement ce
préamplificateur dans votre chaîne, et comment en tirer les performances optimales. Si vous vous posez ensuite encore des
questions, veuillez contacter votre revendeur agréé Rotel, qui se
fera un plaisir d’y répondre.
Conservez le carton d’emballage et tous ses composants. Il
constitue le meilleur moyen pour transporter l’appareil dans le
futur, sans risque de détérioration.
Conservez la facture d’achat et renvoyez le bon d’enregistrement
fourni avec l’appareil. Vous avez ainsi la preuve de la date
d’achat, qui vous sera utile dans le cas où il serait nécessaire de
faire jouer la garantie.
○○ ○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Démarrage
Nous vous remercions pour votre acquisition de ce
préamplificateur stéréo Rotel RC-971. En tant que maillon d’un
système haute-fidélité de très haute qualité, il vous apportera des
années de plaisir musical.
Le RC971 est un préamplificateur complet, de très hautes performances, conçu pour reproduire toute la dynamique et les plus
subtiles nuances de votre musique préférée. Le RC971 utilise une
alimentation parfaitement régulée, avec un transformateur
toroïdal de conception Rotel. Il garantit à l’alimentation une très
faible impédance, d’où une parfaite réserve de puissance pour
tous les circuits. Ce type de conception est plus coûteux à
fabriquer, mais il est meilleur pour la musique.
Positionnement
Comme tous les appareils traitant des signaux de faible tension et
intensité, le RC971 est relativement sensible à son environnement
proche. Evitez de le poser sur l’amplificateur de puissance, ce qui
pourrait générer une sensibilité aux interférences émises par ce
dernier. Nous vous recommandons d’installer le RC971 dans un
meuble spécialement destiné aux appareils hifi. De tels meubles
adaptés réduisent ou suppriment également les vibrations, ce qui
améliore la qualité sonore de tous les maillons de la chaîne. Pour
de plus amples renseignements sur ce type de meuble et sur
l’installation correcte des divers éléments de la chaîne hautefidélité, veuillez-vous adresser à votre revendeur agréé Rotel.
Câbles
Pendant l’installation, prenez un soin particulier aux trajets
respectifs des câbles d’alimentation secteur, câbles de modulation analogique et câbles de signal numérique, afin d’éviter toute
interférence entre eux. N’utilisez que des câbles de haute qualité,
soigneusement blindés afin d’éviter toute dégradation du signal
entre les maillons. Votre revendeur agréé Rotel est en mesure de
vous apporter toute l’information nécessaire concernant le choix
de câbles de liaison de qualité.
10
Loading...