Rotel RB-1091 Stereo Amplifier User Manual
Contents
1. Owner s Manual Manvel d utilisation Bedienungsanleitung Manuale di Istruzioni Manual de Instrucciones Gebruiksaanwijzing Instruktionsbok 1091 Mono Power Amplifier Amplificateur de Puissance Monophonique Mono Endstufe Finale di Potenza Mono de Potencia Monofonica Mono Eindversterker Monoslutsteg RB 1091 Mono Power Amplifier Important Safety Information 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 be sure that the apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids such as vases shall be placed on the apparatus 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 op erating instructions Clean the enclosure only with a dry cloth or a vacuum cleaner You must allow 10 cm or 4 inches of unobst2. The unit has been dropped or damaged in any way Please use Class 2 Wiring when connecting the speaker terminals of the unit to ensure proper insulation and minimize the risk of electrical shock 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 This symbol means that this unit is double insulated An earth connection is not required 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 gt 10cm gt 10cm gt 4in gt 10 cm lt gt gt 4in gt 4in __ al gt 10 cm A
3. let it cool down for several minutes and attempt to identify and correct the problem When you turn the amplifier back on the protection circuit will automatically reset and the PROTECTION LED should go out In most cases the protection circuitry activates because of a fault condition such as shorted speaker wires or inadequate ventilation lead ing to an overheating condition In very rare cases highly reactive or extremely low imped ance speaker loads could cause the protection circuit to engage Input Signal Connection See Figure 2 The RB 1091 has a standard unbalanced RCA type input connector the type used on nearly all audio equipment This RCA input accept audio signals from preamplifiers or surround sound processors Use high quality audio interconnect cables for best performance Speaker Connection See Figure 2 The RB 1091 has two sets of dual binding post speaker connection terminals In addition there is a four contact Speakon connector Some speakers also have Speakon connectors which make it easy to connect the speakers by simply plugging in wires that are terminated with Speakon plugs Even if your speakers do not have Speakon connectors you can still use speaker wires that have Speakon plugs on one end Speaker Selection The nominal impedance of the loudspeaker s connected to the RB 1091 should be no lower than 4 ohms Speaker Wire Selection Use insulated two conductor stranded w
4. Input and Output Connections Preamp or Sound Processor Important Notes When making connections be sure to v Turn off all the components in the system before hook ing up any components including loudspeakers v Turn off all components in the system before changing any of the connections to the system It is also recommended that you V Turn the volume control of the amplifier all the way down before the amplifier is turned on or off ROTEL MONO POWER AMPLIFIER MODEL NO RB 1091 POWER CONSUMPTION 300W 12V TRIGGER N 2 320e CAUTION A DO NOT WARNING SHOCK HAZARD DO NOT OPEN AMIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR WARNING To REDUCE THE RISK OF PRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAN OR MOISTURE Single Wire Connection See page 7 for information on using the Speakon speaker output connectors Biwire Connection Contents Important Safety Information Figure 1 Controls and Connections Figure 2 Input and Output Connections About Rotel Getting Started Operating Features A Few Precautions Placement AC Power and Control AC Power Input El Power Switch and Indicator Turn On Off Mode Selector 121 Trigger Input and Output E Protection Indi
5. Speakon connector cables are available You may also wire your own cables using wire you choose Wiring Speakon Connectors This information describes how to wire the NLAFC four contact Speakon connector The NL2FC two contact connector is connected in a similar way See the instruction sheet that comes with the connector for more in formation or go the manufacturer s web site www neutrik com Place the bushing and chuck on the cable as shown before attaching I Bushing the wires to the terminals AEN on the insert Remove the outer jacket of the wire and strip the insulation from the wires as shown Twist the wire strands together and insert it into the terminal Tighten the terminal screw with a screw driver or a 1 16 allen wrench to clamp the i cable wire in place The insert terminals are labeled 1 1 2 and 2 Connect the wires to the terminals of the con nector insert for the other end of the cable before you assemble the connectors so you can be sure that each wire is connected to the corresponding terminal on bam 4 each insert Housing Push insert oll the woy into the housing Slide the chuck down the wire into place behind the insert Thread the bushing onto the housing and tighten it so the chuck clamps the cable in place RB 1091 Mono Power Amplifier 8 Troubleshooting Most difficulties in audio systems are the result of poor or wrong connections
6. 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 1091 Mono Power Amplifier When used in a high quality music or home theater system your Rotel amplifier will provide years of musical enjoyment The RB 1091 is a sophisticated single channel power amplifier It s digital amplifier circuitry switching power supply premium components and Rotel s Balanced Design ensure superb sound quality High current capability allows the RB 1091 to drive difficult speaker loads with ease Operating Features Single channel amplifier User selectable power on off configuration manual or controlled by remote 12 volt trigger signal e Protection circuitry with front panel indica tor Dual binding post and Speakon speaker output A Few Precautions Please read this manual carefully In addition to installation and operating instructions it pro vides information on various RB 1091 system configurations Please contact your authorized Rotel dealer for answers to any questions you might have In addition all of us at Rotel wel come your questions and comments Save the RB 1091 shipping carton and packing material for future use Shipping or moving the RB 1091 in anything other th
7. 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 1091 refer to the sugges tions for the following conditions Front Panel Power Indicator Is Not Lit No main power to the RB 1091 Check AC power connections at the amplifier and the AC outlet Check the front panel power switch Make sure that it is set to the ON position If using 12V trigger power on make sure that a trigger signal is present at rear panel 12V TRIG IN jack No Sound If the amp is getting AC power but is producing no sound check the PROTECTION INDICATOR on the front panel If lit see below If not check all of your connections and control settings on associated components Make sure that your input connections and speaker connections match your system configuration Protection Indicator Is Lit The front panel PROTECTION INDICATOR will light when the RB 1091 protection circuits have shut off the amplifier Typically this oc curs only when the amplifier has overheated 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 Specifi
8. ANA AA gt 4in Rotel products are designed to comply with international directives on the Restriction of Hazardous Substances RoHS in electrical and electronic equipment and the disposal of Waste Electrical and Electronic Equipment WEEE The crossed wheelie bin symbol indicates compliance and that the products must be appropriately recycled or processed in accordance with these directives GW w 5 l l i Figure 1 Controls and ConnectionsN Commandes et branchements Bedienelemente und Anschl sse Pannello frontale e posteriore Controles y Conexiones De bedieningsorganen en aansluitingen Kontroller och anslutningar ROTEL MONO POWER AMPLIFIER RB 1091 PROTECTION POWER 12V TRIGGER N CAUTION a A RISK OF ELECTRIC SHOCK A DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN AMIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR m m WARNING TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK 00 NOT EXPOSE THS EQUIPMENT TO RAN OR MOISTURE ROTEL SPEAKER MONO POWER AMPLIFIER MODEL NO RB 1091 POWER CONSUMPTION 300W 2 INPUT LOAD 40 MINIMUM _ CLASS 2 WIRING RB 1091 Mono Power Amplifier 4 Figure 2
9. H overrides this function It must be ON for the 1 2V 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 El The jack labeled IN is for connecting the 3 5mm Plug Cable carrying a 12 volt trigger signal to turn the amplifier on and off To use this feature the adjacent switch must be set in the 12V TRIG position see previous section 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 volt trigger signal is applied to the IN connector Protection Indicators El Thermal and protection circuits protect the am plifier against potential damage in the event of extreme or faulty operating conditions Unlike many designs the RB 1091 s protection circuit is independent of the audio signal and has no impact on sonic performance Instead the protection circuit monitors the temperature of the output devices and shuts down the amplifier if safe limits are exceeded In addition the RB 1091 includes overcurrent protection which operates only when load impedances drop too low Should a faulty condition arise the amplifier will stop playing and the PROTECTION LED on the front panel will light If this happens turn the amplifier off
10. a speaker The speaker terminals accept bare wire connector lugs or banana type connectors except in the European Community countries where their use is not permitted Route the wire s from the RB 1091 to the speakers Give yourself enough slack so you can move the components to allow access to the speaker connectors If you are using banana plugs connect them to the wires and then plug into the backs of the speaker connectors When using banana plugs the collars of the binding post terminals 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 speaker connectors separate the wire conductors and strip back the insulation from the end of each conductor Be careful not fo cut into the wire strands Unscrew turn counterclockwise the binding post collar Place the connector lug around the shaft or insert the bundled wire into the hole in the shaft Turn the collars 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 Speakon Speaker Connection J The RB 1091 has a four contact Speakon speaker connector The four contact connectors make it easy to make biwire speaker connec tions The connector on the RB 1091 also ac cepts two contact Speakon connectors if you do not plan to biwire the speakers Pre wired
11. an the original packing material may result in severe damage to your amplifier 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 The RB 1091 generates heat as part of its normal operation The heat sinks and ventila tion openings in the amplifier are designed to dissipate this heat The ventilation slots in the top cover must be unobstructed 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 Likewise remember the weight of the amplifier when you select an installation location Make sure that the shelf or cabinet can support its weight RB 1091 Mono Power Amplifier 6 AC Power and Control AC Power Input El The RB 1091 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 1091 Be sure the Power Switch on the front panel of the RB 1091 is turned off Then plug one end of the cord into the AC power connector Ef on the back panel of the amplifier Plug the other end into an appropriate AC outlet Your RB 1091 is configured at the factory for the proper AC line voltage in the country where you purchased it USA 120
12. cations Power Configurations Watts Channel Total Harmonic Distortion 20Hz 20kHz 8 ohms Continuous Rated Power One Half Rated Power One Watt per Channel Power Output 4 Ohms 0 09 THD Output Peak Current Intermodulation Distortion 60 Hz 7 kHz 4 1 Damping Factor 8 ohms Amp Gain Input Sensitivity Impedance Frequency Response Signal to Noise Ratio IHF A Power Requirements USA Europe Power Consumption Dimensions W x H x D Panel Height for rack mounting Weight net All specifications are accurate at the time of printing 1 x 500 Watts 500 watts with 20KHz filter 8 ohm load 20 20 kHz 0 03 THD lt 0 03 lt 0 03 lt 0 03 1000 watts 40 lt 0 03 400 27 2dB 2 2 V 11 1 k ohms 40 KHz 3 118 dB 120 Volts 60 Hz 230 Volts 50 Hz 300 Watts 34 Watts Idling 3 Watts Standby 432 x 92 x 407 mm 17 x 3 x 16 in 80 mm 3 in 7 8 kg 17 2 Ib Rotel reserves the right to make improvements without notice 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 221 761 Fax 44 0 1903 221 525 Rotel Deutschland Vertrieb B amp W Group Germany GmbH Kleine Heide 12 D 33790 Halle Westf Deuts
13. cators El Input Signal Connection EJ Speaker Speaker Selection Speaker Wire Selection Polarity and Phasing Conventional Speaker Wire Connections E Speakon Speaker Connection EJ Troubleshooting Front Panel Power Indicator Is Not Lit No Sound Protection Indicator Is Lit Spedifications SN NNN co co 60 English About Rotel A family whose passionate interest in music led them to manufacture high fidelity components of uncompromising quality founded Rotel over AO years ago Over the years that passion has remained undiminished and the 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 semicon ductors from Japan or the United States and toroidal power transformers 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
14. chland Tel 05201 87170 Fax 05201 73370 E Mail info bwgroup de www rotel hifi de www rotel com 082 OMRB1091 021206 English French Deutsch Italiano Espa ol e Nederlands Svenska
15. ire to connect the RB 1091 to the speakers The size and quality of the wire can have an audible ef fect 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 alll 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 dif ferent color conductors copper and silver There may be polarity indications printed on the insulation Identify the positive and nega tive conductors and be consistent with every speaker and amplifier connection If you are using Speakon plugs be sure the wires are connected to the proper terminals on the plug English Conventional Speaker Wire Connections El The RB 1091 has two sets of color coded terminals Having two sets of terminals makes it easy to biwire
16. ructed 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 Main plug is used as the mains disconnect device and shall remain ready accessible 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
17. 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 1091 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 1091 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 BB 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 amplifier is turned on To turn the amplifier off push the button again and return it to the out position Turn On Off Mode Selector The RB 1091 can be turned on and off auto matically by using its 12V Trigger system The Turn On Off Mode Selector switch is used to select which method is used With the switch in the OFF position the amplifier is turned on or off manually using the front panel power switch With the switch in the 12V TRIG position the amplifier is turned on automatically when a 12 volt trigger signal is applied to the 3 5mm Jack labeled IN The front panel POWER SWITC
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