Rotel RC-971 User Manual

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RC-971

 

 

 

 

 

 

STEREO CONTROL AMPLIFIER

 

 

 

 

 

 

PRÉAMPLIFICATEUR STÉRÉO

 

 

 

 

 

 

STEREO-VORVERSTÄRKER

 

 

 

 

 

 

PREAMPLIFICATORE STEREO

 

 

 

 

 

 

PREAMPLIFICADOR ESTEREOFONICO

 

 

 

 

 

 

STEREO VOORVERSTERKER

 

 

 

 

 

STEREO CONTROL AMPLIFIER RC-971

VOLUME L R

 

 

 

 

 

 

 

 

 

 

 

 

 

RECORDING

LISTENING

 

 

TONE

 

OFF

 

 

CD

POWER

PHONES

BASS TREBLE OFF

TUNER

 

CD

TUNER

AUX

 

 

ON

 

 

AUX

 

TAPE 1

 

 

 

 

 

 

 

 

 

 

 

TAPE 1

 

TAPE 2

 

 

Owner’s Manual

 

 

 

 

 

 

Manuel de l’utilisateur

 

 

 

 

Bedienungsanleitung

 

 

 

 

 

Manuale di Istruzioni

 

 

 

 

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.

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.

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.

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.

Rotel RC-971 User Manual

STEREO CONTROL AMPLIFIER RC-971

Figure 1: Controls and Connections Commandes et branchements Bedienelemente und Anschlüsse Controlli e Collegamenti Controles y Conexiones

De bedieningsorganen en de ingangen voor de bronnen

1

 

STEREO CONTROL AMPLIFIER RC-971

VOLUME L R

 

 

 

 

TONE

 

POWER

PHONES

BASS

TREBLE

OFF

 

 

 

 

 

ON

 

RECORDING

LISTENING

 

OFF

 

CD

TUNER

CD

TUNER

AUX

 

AUX

 

TAPE 1

 

TAPE 1

 

TAPE 2

2

3

4

5

 

 

6

 

7

8

 

 

 

 

 

 

 

 

SWITCHED

 

 

CD

TUNER AUX

TAPE 1

 

TAPE 2

OUTPUTS

CONTROL AMPLIFIER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEFT

 

 

 

 

LEFT

 

MODEL NO. RC-971

 

 

 

 

 

 

 

POWER CONSUMPTION: 10W

 

 

 

 

 

 

 

 

 

 

 

RIGHT

 

 

 

 

RIGHT

 

 

 

SERIAL NO.

 

IN

OUT

IN

OUT

1

2

AC 3.3A 400W MAX

 

9

10

11

12

13

Figure 2:

Output Connections

 

 

 

 

 

 

 

 

 

 

Prises de sortie

 

 

 

 

 

 

 

 

 

 

Anschluß einer Endstufe

 

 

 

 

 

 

 

 

 

 

Collegamenti d’uscita

 

 

 

 

 

 

 

 

ROTEL RC-971

 

Conexiones de Salida

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

De verbindingen met de eindversterker

 

 

 

 

 

 

 

 

SWITCHED

 

CD

TUNER

AUX

TAPE 1

 

TAPE 2

OUTPUTS

CONTROL AMPLIFIER

 

 

LEFT

 

 

 

 

 

LEFT

 

MODEL NO. RC-971

 

 

 

 

 

 

 

 

POWER CONSUMPTION: 10W

 

 

 

 

 

 

 

 

 

 

 

 

RIGHT

 

 

 

 

 

RIGHT

 

 

 

SERIAL NO.

 

 

IN

OUT

IN

OUT

1

2

AC 3.3A 400W MAX

 

 

 

 

ROTEL RB-981

WARNING:TO REDUCE THE RISK OF FIRE

SPEAKER IMPEDANCE

CAUTION

 

OR ELECTRICAL SHOCK, DO NOT EXPOSE

STEREO 4 OHMS MINIMUM

RISK OF ELECTRIC SHOCK

POWER AMPLIFIER

THIS EQUIPMENT TO RAIN OR MOISTURE.

BRIDGED 8 OHMS MINIMUM

DO NOT OPEN

MODEL NO. RB-981

 

 

 

AVIS: RISQUE DE CHOC ELECTRIQUE–NE PAS OUVRIR

POWER CONSUMPTION: 400W

 

 

SPEAKERS

 

 

RIGHT INPUT

RIGHT

LEFT

LEFT INPUT

 

 

 

 

 

 

 

 

SERIAL NO.

3

STEREO CONTROL AMPLIFIER RC-971

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

CD PLAYER

OUTPUT

L R

ROTEL RC-971

 

 

 

 

 

 

 

 

SWITCHED

CD

TUNER AUX

 

TAPE 1

 

TAPE 2

OUTPUTS

CONTROL AMPLIFIER

 

 

 

 

 

 

 

 

LEFT

 

 

 

 

 

LEFT

 

MODEL NO. RC-971

 

 

 

 

 

 

POWER CONSUMPTION: 10W

 

 

 

 

 

 

 

 

RIGHT

 

 

 

 

 

RIGHT

 

 

SERIAL NO.

 

IN

OUT

IN

OUT

1

2

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

OUTPUT

L

INPUT

L

R

R

ROTEL RC-971

 

 

 

 

 

 

 

 

SWITCHED

CD

TUNER AUX

 

TAPE 1

 

TAPE 2

OUTPUTS

CONTROL AMPLIFIER

 

 

 

 

 

 

 

 

LEFT

 

 

 

 

 

LEFT

 

MODEL NO. RC-971

 

 

 

 

 

 

POWER CONSUMPTION: 10W

 

 

 

 

 

 

 

 

RIGHT

 

 

 

 

 

RIGHT

 

 

SERIAL NO.

 

IN

OUT

IN

OUT

1

2

AC 3.3A 400W MAX

4

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 13

 

 

6

Power Switch 2 and Power Indicator 1

6

Auxiliary Power Outputs

12

6

Input Signal Connections

9

_________________________ 7

Recorder Connections 10

____________________________ 7

Output Connections 11 ______________________________ 7 Front Panel Controls __________________________________ 7

Volume Control 6

 

7

Tone On/Off Switch

5

7

Bass and Treble Controls 4

7

Listening Selector

8

8

Recording Selector

7

8

Phones Output 3

 

8

Troubleshooting ______________________________________ 8

Power Indicator Is Not Lit

8

Fuse Replacement

8

No Sound

8

Specifications _______________________________________ 30

English

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-de- signed 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.

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

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.

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 1

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.

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 13

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

English

Input Signal Connections 9

[See Figure 3 for input connection illustration.]

The RC-971 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.

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.

Recorder Connections 10

[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 outputs of the recorder must be connected to the tape inputs of the RC-971. Similarly the tape outputs of the RC-971 must be connected to the inputs of the recorder. As with other sources be 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.

Output Connections 11

[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.

Front Panel Controls

Volume Control 6

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 clockwise to increase the volume, or counterclockwise to decrease the volume.

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.

Tone On/Off Switch 5

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 4

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 clockwise to increase the bass or treble output. Turn the controls counterclockwise to decrease the bass or treble output.

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.

7

STEREO CONTROL AMPLIFIER RC-971

Listening Selector 8

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 7

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 3

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.

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

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.

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.

Français

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 13

 

11

Interrupteur de mise sous tension

2

et indicateur

Power 1

 

11

Prises de renvoi secteur 12

 

11

Branchements des sources en entrée

9

_____________ 11

Branchements d’un magnétophone 10 _______________ 11 Branchements en sortie 11 __________________________ 11 Face avant : les commandes principales _______________ 12

Commande de volume 6

12

Mise hors service des correcteurs de timbre 5

12

Correcteurs de timbre 4

12

Sélecteur de la source en lecture 8

12

Sélecteur de la source en enregistrement 7

12

Prise casque 3

12

Problèmes de fonctionnement _______________________ 12

La diode Power ne s’allume pas

12

Remplacement du fusible

12

Pas de son

12

Spécifications _______________________________________ 30

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.

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