RB03 - Receiver ROTEL - Free user manual and instructions

USER MANUAL RB03 ROTEL

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DONOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDEREFER SERVICING TO QUALIFIED SERVICE PERSONNEL. Important Safety Instructions WARNING: There are no user serviceable parts inside. Re-fer all servicing to qualified service personnel.WARNING: To reduce the risk of fire or electric shock, donot expose the unit to moisture or water. Do not allow for-eign objects to get into the enclosure. If the unit is exposedto moisture, or a foreign object gets into the enclosure, im-mediately disconnect the power cord from the wall. Takethe unit to a qualified service person for inspection and nec-essary repairs.Read all the instructions before connecting or operating the component.Keep this manual so you can refer to these safety instructions.Heed all warnings and safety information in these instructions and on theproduct itself. Follow all operating instructions.Clean the enclosure only with a dry cloth or a vacuum cleaner.You must allow 10 cm or 4 inches of unobstructed clearance around theunit. Do not place the unit on a bed, sofa, rug, or similar surface that couldblock the ventilation slots. If the component is placed in a bookcase orcabinet, there must be ventilation of the cabinet to allow proper cooling.Keep the component away from radiators, heat registers, stoves, or anyother appliance that produces heat.The unit must be connected to a power supply only of the type and volt-age specified on the rear panel of the unit.Connect the component to the power outlet only with the supplied powersupply cable or an exact equivalent. Do not modify the supplied cable inany way. Do not attempt to defeat grounding and/or polarization provi-sions. Do not use extension cords.Do not route the power cord where it will be crushed, pinched, bent atsevere angles, exposed to heat, or damaged in any way. Pay particularattention to the power cord at the plug and where it exits the back of theunit.The power cord should be unplugged from the wall outlet if the unit is tobe left unused for a long period of time.Immediately stop using the component and have it inspected and/or ser-viced 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 wayPlace the unit on a fixed, level surface strong enoughto support its weight. Do not place it on a moveablecart that could tip over.3 English Figure 1: Controls and Connections Commandes et branchements Bedienelemente und Anschlüsse Controlli e collegamenti Controles y Conexiones De bedieningsorganen en de aansluitingen Funktioner och anslutningar BRIDGED MONO POWERRB-03

TO RAIN OR MOISTURE. AVI

Figure 3: Bridged Mono Connections – Inputs and Speakers Branchements des entrées et des enceintes en ponté mode mono Anschlussdiagramm bei Brückenschaltung - Eingang und Lautsprecher Collegamenti mono configurazione “a ponte - Ingressi e diffusori Conexiones para Funcionamiento en Modo Monofónico Puenteado -Terminales de Entrada y de Conexión a las Cajas Acústicas Gebrugde mono aansluitingen/voorversterker/plaats van de doorverbindingen/ Bryggkopplad monoanslutning för signalingång och högtalarutgång Jumper Locations Emplacement des Cavaliers Jumperpositionen Le posizioni dei ponticelli Ubicaciones de los Puentes Locatie van de doorverbindingen Byglarnas placering RB-03 Stereo Power Amplifier5 About Rotel A family whose passionate interest in music led them to manufacture high fidelity compo- nents of uncompromising quality founded Rotel over 40 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, listen- ing 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 ca- pacitors from the United Kingdom and Ger- many, semiconductors 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 musi- cal, 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 RB-03 Ste- reo Power Amplifier. When used in a high- quality music audio system, it will provide years of musical enjoyment. The RB-03 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 RB-03 has a highly regulated power supply incorporat- ing a Rotel custom-designed toroidal power transformer. This low impedance power sup- ply has ample power reserves, which enables the RB-03 to easily reproduce the most de- manding audio signals. This type of design is more expensive to manufacture, but it is better for the music. English The printed circuit boards (PCB) are designed with Symmetrical Circuit Traces. This insures that the precise timing of the music is main- tained and faithfully recreated. The RB-03 cir- cuitry uses metal film resistors and polystyrene or polypropylene capacitors in important signal paths. All aspects of this design have been ex- amined to ensure the most faithful music re- production. The main functions of the RB-03 are easy to install and use. If you have experience with other stereo systems, you shouldn’t find any- thing perplexing. Simply plug in the associ- ated components and enjoy. A Few Precautions

WARNING: To avoid potential damage to

• your system, turn off ALL the components in the system when connecting or disconnect- ing the loudspeakers or any associated components. Do not turn the system compo- nents back on until you are sure all the con- nections 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 RB-03 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 RB-03 shipping carton and all en- closed packing material for future use. Ship- ping or moving the RB-03 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 RB-03. 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. Contents Important Safety Instructions p. 2
• Figure 1: Controls and Connections 3 Figure 2: Stereo Connections 4 Figure 3: Bridged Mono Connections – Inputs and Speakers 4 About Rotel p. 5
• Getting Started p. 5
• A Few Precautions 5 Placement 6 Cables 6 AC Power and Control p. 6
• AC Power Input 6 Power Switch and Indicator 6 Trigger ON/OFF Mode Selector 6 12V Trigger Input and Output 6 Input Signal Connection p. 6
• Speaker Connection p. 7
• Speaker Selection 7 Speaker Wire Selection 7 Polarity and Phasing 7 Stereo Speaker Connection 7 Bridged Mono Operation p. 7
• Resetting Jumpers 7 Input Connection 7 Bridged Speaker Connection 7 Troubleshooting p. 8
• Front Panel Power Indicator Is Not Lit 8 Fuse Replacement 8 No Sound 8 Specifications Placement Like all audio components that handle low- level signals, the RB-03 can be affected by its environment. Avoid placing the RB-03 on top of other components. Also avoid routing au- dio signal cables near power cords. This will minimize the chance it will pick up hum or in- terference. The RB-03 generates heat as part of its nor- mal operation. The heat sinks and ventilation openings in the amplifier are designed to dis- sipate 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 lo- cation, 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 RB-03 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 sig- nal cables and regular audio signal cables in your installation away from each other. This will minimize the chance of the regular au- dio signal cables picking up noise or inter- ference 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. RB-03 Stereo Power Amplifier AC Power and Control AC Power Input The RB-03 is supplied with the proper AC power cord. Use only this cord or an exact equivalent. Do not use an extension cord. A heavy duty multi-tap power outlet strip may be used, but only if it is rated to handle the current demand of the RB-03. Be sure the Power Switch on the front panel of the RB-03 is turned off. Then, plug one end of the cord into the AC power connector on the back panel of the amplifier. Plug the other end into an appropriate AC outlet. Your RB-03 is configured at the factory for the proper AC line voltage in the country where you purchased it (USA: 115 volts/60 Hz , Europe: 230 volts/50 Hz). The AC line con- figuration is noted on a label on the back panel. NOTE: Should you move your RB-03 to another country, it is possible to configure your amplifier for use on a different line voltage. Do not attempt to perform this con- version yourself. Opening the enclosure of the RB-03 exposes you to dangerous volt- ages. Consult a qualified technician or the Rotel factory service department for infor- mation. If you are going to be away from home for an extended period of time, it is a sensible precaution to unplug your amplifier. Power Switch and Indicator The Power Switch is located on the front panel. To turn the amplifier on (or to activate either of the optional automatic power-on modes), push the switch in. The LED indicator above the switch will light, indicating that the am- plifier is turned on. To turn the amplifier off, push the button again and return it to the out position. Trigger ON/OFF Mode Selector The Amplifier provides the option for manual or automatic power on/off operation. These modes are selectable using a toggle switch on the back panel. With the switch in the 12V TRIGGER ON position, the amplifier is turned on automati- cally when a 12V trigger signal is present at the 3.5 mm Jack of TRIGGER IN on the rear panel. The amplifier will go into standby mode if the 12V signal is not present. The front panel POWER SWITCH overrides this function. It must be ON for the 12V trigger to work. Turning the switch OFF cuts power to the amplifier, regardless of whether or not a trigger signal is present. 12V Trigger Input and Output The jack labeled IN is for connecting the 3.5mm Plug/Cable carrying a 12 V trigger signal to turn the amplifier on and off. To use this fea- ture the toggle switch must be set to the ON position. This input accepts any control sig- nal (AC or DC) ranging from 3 volts to 30 volts. The jack labeled OUT is for connecting an- other 3.5mm plug/cable to provide a 12V trigger signal to other components. The 12V output signal is available whenever a 12 V trigger signal is applied to the IN connector. Input Signal Connection [See Figure 2 for normal stereo wir- ing illustration.] The RB-03 has conventional RCA type input connectors, the type found on nearly all au- dio equipment. 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. Select a high quality pair of audio intercon- nect cables. Connect the left channel output of your preamp to the left channel input on the RB-03. Connect the right channel output of your preamp to the right channel input.7 English Speaker Connection Speaker Selection We recommend using loudspeakers with a nominal impedance of 4 ohms or higher with the RB-03. You should exercise some caution in driving multiple pairs of speakers in par- allel configuration, because the effective im- pedance 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 pre- cise. In practice, very few loudspeakers will present any problems for the RB-03. See your authorized Rotel dealer if you have any ques- tions. Speaker Wire Selection Use insulated two-conductor stranded wire to connect the RB-03 to the speakers. The size and quality of the wire can have an audible effect on the performance of the system. Stan- dard 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 ap- propriate cables for your system. Polarity and Phasing The polarity — the positive/negative orien- tation of the connections — for every speaker and amplifier connection must be consistent so all the speakers will be in phase. If the po- larity of one connection is mistakenly reversed, bass output will be very weak and stereo im- aging degraded. All wire is marked so you can identify the two conductors. There may be ribs or a stripe on the insulation of one con- ductor. 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. Stereo Speaker Connection The RB-03 has two pairs of color coded binding posts on the back panel. These connectors ac- cept bare wire, connector lugs, or dual ba- nana type connectors (except in the European Community countries where their use is not permitted). Route the wire from the RB-03 to the speak- ers. 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 thumb- screws 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 coun- terclockwise) the binding post hexagonal thumbscrews. Place the connector lug or wire around the binding post shaft. Turn the hex- agonal 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. Bridged Mono Operation [See Figure 3 for bridged operation jumper setting and connection illus- tration.] The two channels of the RB-03 can be “bridged”. In this configuration the single channel produces a massive 180 watts! This feature allows you to increase the overall power output of your system by bridging the RB-03 and adding a second bridged RB-03. Or the RB-03 is bridged to drive a monophonic sub- woofer. Note however that when the RB-03 is bridged the speaker connected to it must have an impedance of 8 ohms or more. In order to use the RB-03 in bridged mode, three “jumper” connectors inside the ampli- fier must be moved from one set of pins to an- other. This task should be done by a quali- fied technician. See your authorized Rotel dealer. In addition the RB-03 is connected to the other components in a different way. When the RB-03 is setup for bridged operation the Bridged Mono indicator light on the front panel will light. Resetting Jumpers Before opening the RB-03 cabinet to reset the jumpers, the power cord must be un- plugged from the wall. DO NOT OPEN THE CABINET OF THE RB-03 BEFORE THE p. 86

VOLTAGES. After the power cord has been unplugged, remove the screws that hold the cabinet cover in place and slide the cover off the amplifier. Locate the three jumper pin blocks labeled S 601, S 602 and S 603. The factory stan- dard (stereo) position of the jumpers is on pins 1 and 2 of each block. There is a * mark on the circuit board next to this position. To con- vert the RB-03 to bridged mono move all three jumpers so they are on pins 2 and 3 of each jumper pin block. Replace the cover of the cabinet. Do not plug the RB-03 power cord back into the wall outlet until the cabinet cover has been replaced. Input Connection When using the RB-03 in bridged mono mode, connect the cable from the preamplifier out- put to the left input. No connection is made to the right input. Bridged Speaker Connection When using the RB-03 in bridged mono mode, the wire to the speakers is connected to the positive terminals of the left and right chan- nels. Connect the wire that goes to the posi- tive terminal of the speaker to the positive ter- minal of the left channel of the RB-03. Con- nect the wire that goes to the negative termi- nal of the speaker to the positive terminal of the right channel of the RB-03. No connec- tions are made to the negative terminals of the RB-03.8 RB-03 Stereo Power Amplifier Troubleshooting Most difficulties in audio systems are the re- sult of poor or wrong connections, or improper control settings. If you encounter problems, isolate the area of the difficulty, check the con- trol settings, determine the cause of the fault and make the necessary changes. If you are unable to get sound from the RB-03, refer to the suggestions for the following conditions: Front Panel Power Indicator Is Not Lit No main power to the RB-03. Check the front panel power switch. Make sure that it is set to the on position. Check AC power connec- tions at the amplifier and the AC outlet. Fuse Replacement If everything checks out correctly and you still cannot get the amplifier to turn on, the inter- nal power fuse may have blown. If you be- lieve this has happened, contact your autho- rized Rotel dealer for information on where to take your amplifier to get the fuse replaced. No Sound If the amp is getting AC power, but is producing no sound, check all of your connections and control settings on associated components. Specifications Continuous Power Output 70 watts/ch (20-20 kHz, < 0.03%, 8 ohms) Bridged Mono Power Output 180 watts (20-20 kHz, < 0.1%, 4 ohms) (200 watts at 1kHz) Total Harmonic Distortion (20Hz-20kHz, 8 ohms) < 0.03% Intermodulation Distortion (60 Hz : 7 kHz, 4:1) < 0.03% Frequency Response ( ± 1dB) 10Hz-100kHz Damping Factor (20-20,000 Hz, 8 ohms) 500 Speaker Impedance (Normal mode) 4 ohms minimum Signal to Noise Ratio (IHF A network) 116 dB Input Impedance/Sensitivity 33 k Ohms/1.0 volt Power Requirements USA Version 115 Volts, 60 Hz European Version 230 Volts, 50 Hz Power Consumption 250 Watts Dimensions (W x H x D) 435 x 92 x 334 mm

/32" Weight (net) 7.5 kg, 16.54 lb. All specifications are accurate at the time of printing. Rotel reserves the right to make improvements without notice.9 Français

KABINETTET PÅ RB-03 INNAN