RB-985 MKII
FIVE CHANNEL POWER AMPLIFIER
AMPLIFICATEUR DE PUISSANCE À CINQ CANAUX
FÜNFKANAL-ENDSTUFE
AMPLIFICATORE DI POTENZA A CINQUE CANALI ETAPA DE POTENCIA DE CINCO CANALES
MULTI CHANNEL
POWER AMPLIFIER
RB-985 MKII
PROTECTION
F/L CTR F/R
R/L |
R/R |
POWER
Owner’s Manual
Guide d’utilisation
Bedienungsanleitung
Manuale di Istruzioni
Manual de Instrucciones
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.
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.
FIVE CHANNEL POWER AMPLIFIER RB-985 MKII
Figure 1: Controls and Connections
Commandes et prises
Bedienelemente und Anschlüsse
Controlli e collegamenti
Controles y Conexiones
MULTI CHANNEL
POWER AMPLIFIER
RB-985 MKII
PROTECTION
F/L CTR F/R
R/L |
R/R |
POWER
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INPUT |
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SURROUND |
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DB25 INPUT |
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SURROUND |
POWER AMPLIFIER
MODEL NO. RB-985MKII
POWER CONSUMPTION: 800W
Manufactured under license from |
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SPEAKER IMPEDANCE |
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WARNING:TO REDUCE THE RISK OF FIRE |
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Lucasfilm Ltd. Lucasfilm and THX are |
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OR ELECTRICAL SHOCK, DO NOT EXPOSE |
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registered trademarks of Lucasfilm Ltd. |
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SPEAKERS |
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CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE–NE PAS OUVRIR
SERIAL NO.
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Figure 2: Preamp Input and Speaker Output Connections
Prises d’entrée du préamplificateur et prises de sortie des enceintes
Anschlußdiagramm (Cinch-Eingänge und Lautsprecher)
Collegamenti di ingresso dal preamplificatore e delle uscite dei diffusori.
Conexiones de la Señal de Entrada y Salidas a las Cajas Acústicas
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PREAMPLIFIER OR SIGNAL PROCESSOR |
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OUTPUTS |
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SURROUND |
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ROTEL RB-985 MKII |
RIGHT SURROUND |
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LEFT SURROUND |
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INPUT |
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CENTER |
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SURROUND |
FRONT |
DB25 INPUT |
FRONT |
SURROUND |
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POWER AMPLIFIER |
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MODEL NO. RB-985MKII |
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POWER CONSUMPTION: 800W |
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Manufactured under license from Lucasfilm Ltd. Lucasfilm and THX are registered trademarks of Lucasfilm Ltd.
SPEAKER IMPEDANCE |
WARNING:TO REDUCE THE RISK OF FIRE |
OR ELECTRICAL SHOCK, DO NOT EXPOSE |
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4 OHMS MINIMUM |
THIS EQUIPMENT TO RAIN OR MOISTURE. |
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE–NE PAS OUVRIR
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RIGHT |
SPEAKERS |
SURROUND |
FRONT |
CENTER |
RIGHT FRONT |
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LEFT |
FRONT |
SURROUND |
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SERIAL NO. |
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LEFT FRONT |
Contents (circled numbers refer to illustration)
About Rotel __________________________________________ 1
About the THX Ultra™ System ________________________ 1
Getting Started ______________________________________ 2
A Few Precautions |
2 |
Placement |
2 |
Power and Control ___________________________________ 2
Power Input |
4 |
2 |
Power Switch |
1 and Power Indicator 2 |
2 |
Protection Circuitry 3 |
2 |
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Input Signal Connection ______________________________ 3
Input Signal Connection 5 |
3 |
DB25 Connector Input 6
Speaker Connection __________________________________ 3
Speaker Selection |
3 |
Speaker Wire Selection |
3 |
Polarity and Phasing |
3 |
Speaker Connection 7 |
3 |
Troubleshooting ______________________________________ 4
Front Panel Power Indicator Is Not Lit |
4 |
Fuse Replacement |
4 |
No Sound |
4 |
Protection Indicator Is Lit |
4 |
Specifications _______________________________________ 25
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.
About the THX Ultra™ System
THX is an exclusive set of standards and technologies established by the world-renowned film production company, Lucasfilms Ltd. THX grew from George Lucas' personal desire to make your experience of the film soundtrack, in both movie theaters and in your home theater, as faithful as possible to what the director intended.
Movie sound tracks are mixed in special movie theaters called dubbing stages and are designed to be played back in movie theaters with similar equipment and conditions. The soundtrack created for movie theaters is then transferred directly onto Laserdisc, VHS tape, DVD, etc., and is not changed for playback in a small home theater environment. THX engineers developed patented technologies to accurately translate the sound from the movie theater environment into the home, correcting the tonal and spatial errors that occur.
Before any home theater component can be THX Ultra certified, it must incorporate the THX technologies and also pass a rigorous series of quality and performance tests. Only then can a product feature the THX Ultra logo, which is your guarantee that the Home Theater products you purchase will give you superb performance for many years to come.
Lucasfilm and THX are trademarks of Lucasfilm Ltd.
All rights reserved
1
Getting Started
Thank you for purchasing the Rotel RB-985 MKII Power Amplifier. When used in a high-quality music or home theater system, it will provide years of musical enjoyment.
The RB-985 MKII is a high-power, five-channel power amplifier, providing the highest level of audio performance. Discrete output devices, a massive power supply, premium components, and Rotel’s Balanced Design ensure superb sound quality. High current capability allows the RB-985 MKII to drive the most demanding loudspeakers.
Be aware that the RB-985 MKII is capable of high power levels, in excess of 100 watts per channel. Make sure that your speakers can handle the power of the RB-985 MKII. If in doubt about your speakers, ask your authorized Rotel dealer for advice.
Most likely, you will never see this protection circuitry in action. However, should a faulty condition arise, the amplifier will stop playing and an LED indicator on the front panel will light up.
If this happens, turn the amplifier off, let it cool down for several minutes, and attempt to identify and correct the problem that caused the protection circuitry to engage. When you turn the amplifier back on, the protection circuit will automatically reset and the indicator LED should go out.
In most cases, the protection circuitry activates because of a fault condition such as shorted speaker wires, or inadequate ventilation leading to an overheating condition. In very rare cases, highly reactive or extremely low impedance speaker loads could cause the protection circuit to engage.
If the protection circuitry triggers repeatedly and you are unable to isolate and correct the faulty condition, contact your Rotel audio retailer for assistance in troubleshooting.
Input Signal Connection 5
[See Figure 2 for wiring illustration.]
The RB-985 MKII has conventional RCA type input connectors, the type found on nearly all audio equipment.
Note: Do not connect inputs to both the RCA and DB25 inputs. (See the following section.) Use one or the other.
Note: To prevent loud noises that neither you nor your speakers will appreciate, make sure the amplifier is turned off when you make any signal connections.
Use high quality audio interconnect cables. Connect the various outputs of your preamplifier or signal processor to the corresponding inputs of the RB-985 MKII . Check these connections carefully to be sure there are no incorrect connections.
DB25 Connector Input 6
The RB-985 MKII is also equiped with a DB25 type input. This input is typically only used in professionally-installed custom systems. The DB25 input duplicates the function of the five RCA inputs. For information regarding how to use this input, contact your nearest authorized Rotel service center.
English
Speaker Connection
Speaker Selection
We recommend using loudspeakers with a nominal impedance of 4 ohms or higher with the RB-985 MKII. You should exercise some caution in driving multiple pairs of speakers in parallel configuration, because the effective impedance the amplifier sees is cut in half. For example, when driving two pair of 8 ohm speakers, the amplifier sees a 4 ohm load. When driving multiple speakers in parallel, it is recommended that you select speakers with a nominal impedance of 8 ohms or higher. Speaker impedance ratings are less than precise. In practice, very few loudspeakers will present any problems for the RB-985 MKII. See your authorized Rotel dealer if you have any questions.
Speaker Wire Selection
Use insulated two-conductor stranded wire to connect the RB-985 MKII 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 appropriate 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 mistakenly 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.
Speaker Connection 7
The RB-985 MKII has five pairs of color coded binding posts on the back panel. These connectors accept bare wire, connector lugs, or dual banana type connectors (except in the European Community countries where their use is not permitted).
The negative connectors for all the channels are black. The positive connectors for the right front and surround speakers are red. The positive connectors for the left front and surround speakers are blue. The positive connector for the center speaker is green.
3
FIVE CHANNEL POWER AMPLIFIER RB-985 MKII
Route the wire from the RB-985 MKII to the speakers. Give yourself enough slack so you can move the components enough 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 hexagonal 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 back the insulation from the end of each conductor. Be careful not to cut into the wire strands. Unscrew (turn counterclockwise) the binding post hexagonal thumbscrews. Place the connector lug or wire around the binding post shaft. Turn the hexagonal thumbscrews clockwise to clamp the connector lug or wire firmly in place.
Troubleshooting
Most difficulties in audio systems are the result of poor or wrong 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 RB-985 MKII, refer to the suggestions for the following conditions:
Front Panel Power Indicator Is Not Lit
No main power to the RB-985 MKII. Check the front panel power switch. Make sure that it is set to the on position. Check power connections at the amplifier and the outlet.
Note: Be sure there are no loose wire strands that could touch adjacent wires or connectors.
Fuse Replacement
If everything checks out correctly and you still cannot get the amplifier to turn on, the internal power fuse may have blown. If you believe this has happened, contact your authorized Rotel dealer for information on where to take your amplifier to get the fuse replaced.
No Sound
If the amp is getting power, but is producing no sound, check the Protection indicator on the front panel. If it is lit, see below. If not, check all of your connections and control settings on associated components.
Protection Indicator Is Lit
The front panel indicator lights when the RB-985 MKII protection circuits have shut off the amplifier. Typically, this occurs only when the ventilation openings are blocked, when there is faulty speaker wiring, or after a period of extreme use. Turn off the system and wait for the amp to cool. Then push the front panel power switch in and out to reset the protection devices. If the problem is not corrected or reoccurs, there is a problem with the system or the amplifier itself.
4
AVERTISSEMENT
Il n’y a à l’intérieur de cet appareil aucune pièce utilisable par l’usager. Confier les réparations à un technicien qualifié.
AVERTISSEMENT
Pour réduire les risques d’incendie et de décharge électrique, on ne doit pas exposer l’amplificateur à l’humidité ou à l’eau. On ne doit pas permettre à des objets de pénétrer à l’intérieur de l’appareil.
S’il a été exposé à l’humidité ou si un objet y a pénétré, débrancher immédiatement l’appareil et le faire inspecter ou réparer par un technicien qualifié.
Lire attentivement toutes les consignes avant de brancher l’amplificateur. Conserver ce guide de façon à pouvoir consulter les consignes de sécurité qui y sont données.
Lire attentivement toutes les mises en garde et les consignes de sécurité que l’on retrouve dans ce guide d’utilisation et à l’arrière de l’appareil. On doit respecter les consignes d’utilisation de l’appareil.
Pour nettoyer l’appareil, n’utiliser qu’un chiffon sec ou un aspirateur.
Vous devez laisser libre tout autour de l’appareil un espace d’au moins 10 cm. Ne posez pas l’appareil sur un lit, un canapé, une moquette épaisse, ou toute autre surface non plane et rigide susceptible d’obstruer les ouïes d’aération. Si l’appareil est placé dans une bibliothèque ou un meuble, il doit y avoir un espace suffisant autour de lui et le meuble doit être ventilé s’il est clos.
Ne pas placer l’amplificateur près d’un radiateur, d’une bouche de chaleur, d’un poêle ou d’un autre appareil qui produit de la chaleur.
L’amplificateur RB-985MKII ne doit être branché que dans une prise de courant dont la tension correspond à celle qui est indiquée à l’arrière de l’appareil.
N’utiliser que le cordon d’alimentation doté de fiches à 2 broches polarisées fourni avec l’appareil ou un câble identique. On ne doit jamais modifier le cordon d’alimentation fourni avec l’appareil, rendre inopérante la prise de terre ou inverser la polarité des broches sur la prise. Le câble d’alimentation devrait être branché dans une prise murale polarisée à deux broches. La broche la plus large doit pénétrer dans l’orifice le plus large de la prise murale. Ne pas utiliser de cordon de prolongation.
On ne doit pas passer le cordon d’alimentation de l’appareil dans un endroit où il pourrait être écrasé, pincé, replié sur lui-même, exposé à la chaleur ou endommagé. On doit porter une attention particulière aux deux extrémités du cordon, là où l’on retrouve les deux prises.
L’appareil devrait être débranché de la prise murale s’il n’est pas utilisé pendant de longues périodes.
On doit immédiatement fermer l’appareil et le faire inspecter ou réparer par un technicien qualifié si :
•Le cordon d’alimentation ou ses prises sont endommagés.
•Des objets ont pénétré dans l’appareil ou du liquide s’y est répandu.
•L’appareil a été exposé à la pluie.
•L’appareil montre des signes de mauvais fonctionnement.
•L’appareil a été échappé ou endommagé.
Placer l’amplificateur RB-985MKII sur une surface de niveau et suffisamment solide pour supporter le poids de l’appareil. Ne pas placer l’appareil sur un chariot mobile qui pourrait basculer.
Français
Table des matières
(les chiffres encerclés sont des renvois aux illustrations)
Un mot sur Rotel _____________________________________ 6
Un mot sur le système THX UltraMC ___________________________________ 6
Préliminaire __________________________________________ 6
Quelques précautions à prendre |
6 |
Positionnement |
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Alimentation et commutateur général _________________ 7
Prise pour cordon d’alimentation 4 |
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Commutateur général |
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témoin d’alimentation |
2 |
7 |
Circuit de protection |
3 |
7 |
Prises d’entrée _______________________________________ 8
Prises d’entrée 5 |
8 |
Branchement de la prise d’entrée DB25 6 |
8 |
Branchement des enceintes ___________________________ 8
Choix des enceintes |
8 |
Choix des câbles d’enceintes |
8 |
Polarité et mise en phase |
8 |
Branchement des enceintes 7 |
9 |
Dépannage __________________________________________ 9
Le témoin d’alimentation ne s’allume pas |
9 |
Remplacement du fusible |
9 |
Absence de son |
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Le témoin de protection est allumé |
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Fiche technique _____________________________________ 25
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