RB03 - Receiver ROTEL - Free user manual and instructions
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| Product type | Receiver / Stereo Power Amplifier |
| Brand | Rotel |
| Model | RB03 |
| Continuous power output (stereo) | 70 W per channel into 8 ohms (20 Hz - 20 kHz, 0.03% THD) |
| Bridge mono output power | 180 W into 4 ohms (20 Hz - 20 kHz, < 0.1% THD) |
| Total harmonic distortion | 0.03% |
| Frequency response | 10 Hz - 100 kHz (±1 dB) |
| Damping factor | 500 (20 Hz - 20 kHz, 8 ohms) |
| Input impedance | 33 kohms |
| Input sensitivity | 1.0 V |
| Signal-to-noise ratio | 116 dB (IHF A weighted) |
| Recommended speaker impedance | 4 ohms minimum (normal mode), 8 ohms minimum (bridge mode) |
| Mains power | 115 V / 60 Hz or 230 V / 50 Hz (depending on version) |
| Power consumption | 250 W |
| Front panel height | 80 mm (for rack mounting) |
| Net weight | 7.5 kg |
| Audio inputs | 2 pairs RCA (L/R) |
| Speaker outputs | 2 pairs of binding posts (color coded) |
| Special features | Bridge mono mode, 12 V trigger input/output, automatic power on |
| Maintenance | Clean with a dry cloth or a small vacuum cleaner |
| Safety instructions | Disconnect power before any internal manipulation; do not expose to moisture; do not obstruct ventilation slots |
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USER MANUAL RB03 ROTEL
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Close-up of a printed circuit board with various electronic components and connectors (no readable text or symbols)
Owner's Manual Manuel d'utilisation Bedienungsanleitung Manuale di Istruzioni Manual de Instrucciones Gebruiksaanwijzing Bruksanvisning
RB-03
Stereo Power Amplifier Amplificateur De Puissance Stéréo Stereo-Endstufe Finale di Potenza Stereo Etapa de Potencia Estereofónica Stereo Eindversterker Stereo-slutsteg
| No. | ROTSL | |
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.
Important Safety Instructions
WARNING: There are no user serviceable parts inside. Refer all servicing to qualified service personnel.
WARNING: To reduce the risk of fire or electric 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 component. 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 enclosure only with a dry cloth or a vacuum cleaner.
You must allow 10 cm 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 component is placed in a bookcase or cabinet, there must be ventilation of the cabinet to allow proper cooling.
Keep the component 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 component to the power outlet only with the supplied 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. 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 component 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 it on a moveable cart that could tip over.
Figure 1: Controls and Connections
Figure 2: Stereo Connections
Branchement des entrées et des enceintes en stéréo Anschlussdiagramm bei Stereobetrieb Collegamenti stereo - Ingressi e diffusori Conexión de la señal de entrada y las cajas acústicas De cinch- en luidsprekerverbindingen Anslutningar för ingångssignalerna och högtalarutgångarna
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PREAMPLIFIES PREAMP OUTPUT R ROTTEL RB-03 WARNING: OUTLEAL TEL 155 LED, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter, Litter RUT OUTPUT SEAKER IMPERENCE TETE LEAM & NAPAN BEET & COOL CAUTION Lift output: 200V LED: 80V RUT OUTPUT POWER AMPLIERS WIREL BY: 1940 POWER CONSUMPTION: 250VFigure 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
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PREAMPLIFIES PREAMP OUTPUTS R ROTEL RB-03 114 128 MATERIAL COLDLE PETER 15 THE BONE OF ELECTRIC POWER 1627 VOLTAGE THERM SWITCH TO ROLL ON CHAPET RAGE SEAKEN IMPEDANCE STOCK 1.4MPA METER DR DNER 1.4MPA METER CAUTION POWER AMPLIFS WD 501 @ RB-03 POWER CONSUMPTION 250W + - + - + - + - + - + - + -
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S603 1.1 S601 1.1 S602 1.1Jumper Locations
Important Safety Instructions ...... 2
Figure 1: Controls and Connections 3
Figure 2: Stereo Connections 4
Figure 3: Bridged Mono Connections — Inputs and Speakers 4
About Rotel 5
Getting Started 5
A Few Precautions 5
Placement 6
Cables 6
AC Power and Control 6
AC Power Input 6
Power Switch and
Indicator 16 2
Trigger ON/OFF Mode Selector 6
12V Trigger Input and Output 6 6
Input Signal Connection 7 6
Speaker Connection....7
Speaker Selection 7
Speaker Wire Selection 7
Polarity and Phasing 7
Stereo Speaker Connection 8 7
Bridged Mono Operation 3 7
Resetting Jumpers 7
Input Connection 7
Bridged Speaker Connection 7
Troubleshooting 8
Front Panel Power Indicator Is Not Lit 8
Fuse Replacement 8
No Sound 8
Specifications 8
About Rotel
A family whose passionate interest in music led them to manufacture high fidelity components 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, 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, 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 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 RB-03 Stereo 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 incorporating a Rotel custom-designed toroidal power transformer. This low impedance power supply has ample power reserves, which enables the RB-03 to easily reproduce the most demanding audio signals. This type of design is more expensive to manufacture, but it is better for the music.
The printed circuit boards (PCB) are designed with Symmetrical Circuit Traces. This insures that the precise timing of the music is maintained and faithfully recreated. The RB-03 circuitry uses metal film resistors and polystyrene or polypropylene capacitors in important signal paths. All aspects of this design have been examined to ensure the most faithful music reproduction.
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 anything perplexing. Simply plug in the associated 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 disconnecting the loudspeakers or any associated components. Do not turn the system components back on until you are sure all the connections are correct and secure. Pay particular attention to the speaker wires. There must be no loose strands that could contact the other speaker wires, or the chassis of the amplifier.
Please read this manual carefully. It provides information on how to incorporate the 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 enclosed packing material for future use. Shipping 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.
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 audio signal cables near power cords. This will minimize the chance it will pick up hum or interference.
The RB-03 generates heat as part of its normal operation. The heat sinks and ventilation openings in the amplifier are designed to dissipate this heat. The ventilation slots in the top cover must be open. There should be 10 cm (4 inches) of clearance around the chassis, and reasonable airflow through the installation location, to prevent the amplifier from overheating.
Remember the weight of the amplifier when you select an installation location. Make sure that the shelf or cabinet can support it. We recommend installing the 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 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.
AC Power and Control
AC Power Input 9
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 9 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 configuration 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 conversion yourself. Opening the enclosure of the RB-03 exposes you to dangerous voltages. Consult a qualified technician or the Rotel factory service department for information.
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 1 2
The Power Switch is located on the front panel. Toturn 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 amplifier is turned on. To turn the amplifier off, push the button again and return it to the out position.
Trigger ON/OFF Mode Selector 4
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 automatically 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 5 and Output 6
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 feature the toggle switch must be set to the ON position. This input accepts any control signal (AC or DC) ranging from 3 volts to 30 volts.
The jack labeled OUT is for connecting another 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 7
[See Figure 2 for normal stereo wiring illustration.]
The RB-03 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 amplifier is turned off when you make any signal connections.
Select a high quality pair of audio interconnect 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.
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 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-03. See your authorized Rotel dealer if you have any questions.
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. 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.
Stereo Speaker Connection 8
The RB-03 has two 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).
Route the wire from the RB-03 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 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 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.
Note: Be sure there are no loose wire strands that could touch adjacent wires or connectors.
Bridged Mono Operation 3
[See Figure 3 for bridged operation jumper setting and connection illustration.]
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 subwoofer. 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 amplifier must be moved from one set of pins to another. This task should be done by a qualified 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 3 on the front panel will light.
Resetting Jumpers
Before opening the RB-03 cabinet to reset the jumpers, the power cord must be unplugged from the wall. DO NOT OPEN THE CABINET OF THE RB-03 BEFORE THE POWER CORD HAS BEEN UNPLUGGED FROM THE WALL. FAILURE TO DO SO WILL EXPOSE YOU TO HAZARDOUS 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 standard (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 convert 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 output 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 channels. Connect the wire that goes to the positive terminal of the speaker to the positive terminal of the left channel of the RB-03. Connect the wire that goes to the negative terminal of the speaker to the positive terminal of the right channel of the RB-03. No connections are made to the negative terminals of the RB-03.
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-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 connections 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 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 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 1 kHz)
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
17^1/8 × 3^5/8 × 13^3/16 ins.
Panel Height 80 mm / 2 ^5 /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.
ATTENTION : POUR RÉDUIRE LE RISQUE D'ÉLECTROCUTION, NE PAS RETIRER LE CAPOT. IL N'Y A À L'INTÉRIEUR AUCUNE PIÈCE SUSCEPTIBLE D'ÊTRE MODIFIÉE PAR L'UTILISATEUR. EN CAS DE PROBLÈME, ADRESSEZ-VOUS À UN RÉPARATEUR AGREÉ.
Dimensions (L x H x P) 435 x 92 x 334 mm
Important Safety Instructions .... 2
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Close-up of a printed circuit board with various electronic components and connectors (no readable text or symbols)
The Rotel Co. Ltd.
10-10 Shinsen-Cho
Shibuya-Ku
Tokyo 150-0045
Japan
Phone: +81 3-5458-5325
Fax: +81 3-5458-5310
Rotel of America
54 Concord Street
North Reading, MA 01864-2699
USA
Phone:+1 978-664-3820
Fax: +1 978-664-4109
Rotel Europe
Dale Road
Worthing, West Sussex BN11 2BH
England
Phone: +44 (0)1903 221 600
Fax: +44 (0)1903 221 525
Rotel Deutschland
Kleine Heide 12