Rotel RB-1080 User's Manual
Contents
1. N Mo N N N Z N c c c oc co co co co English 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 employ ees 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 semi conductors from Japan or the United States while toroidal power transform ers 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 1080 Stereo Power Amplifier When used in a high quality music or home theater system your Rotel amplifie2. TION RIGHT SPEAKER A a RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR ae IMPEDANCE LEFT eg OHMS MINIMUM AUTION DISCONNECT 6 I eee Deshancren SERIAL NO OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE WARNING TO REDUCE THE RISK Manufactued under license from Lucasfilm Ltd Lucasfilm and THX are registered trademarks of Lucasfilm Ltd FUSIBLE DE RECHANGE DE MEME TYPE CG RB 1080 Stereo Power Amplifier 4 Figure 2 Stereo Connections Branchement des entr es et des enceintes en st r o Anschlufidiagramm bei Stereobetrieb Collegamenti stereo Ingressi e diffusori Conexi n de la se al de entrada y las cajas ac sticas De cinch en luidsprekerverbindingen PREAMPLIFIER e ROTEL RB 1080 Figure 3 Balanced Inputs Connection Branchement des entr es sym triques Anschluf amp idiagramm Symmetrische Eing nge Collegamento ingressi bilanc Entradas Balanceadas De gebalanceerde ingangen WARNING TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK Do NOT
3. Owner s Manual Manuel d utilisation Bedienungsanleitung Manuale di Istruzioni Manual de Instrucciones Gebruiksaanwijzing RB 1080 Stereo Power Amplifier Amplificateur De Puissance St r o Stereo Endstufe Finale di Potenza Stereo Etapa de Potencia Estereof nica Stereo Eindversterker ROTEL RB 1070 Stereo Power Amplifier CAUTION 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 in side Refer all servicing to qualified service person nel WARNING To reduce the
4. Do not use an extension cord A heavy duty multi tap power outlet strip may be used if it and the wall outlet is rated to handle the current demanded by the RB 1080 and all the other components con nected to it Be sure the Power Switch on the front panel of the RMB 1095 is turned off in the out po sition Then connect the supplied power cord to the Power Connector on the back panel of the amplifier and to the AC power outlet Your RB 1080 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 RB 1080 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 RB 1080 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 au dio and video components while you are away Power Switch H and Power Indicator EJ The power switch is located on the front panel of your amplifier To turn the amplifier on push the switch in The LED
5. 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 ser vice 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 instruc tions and on the product itself Follow all operating instruc tions 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 fo the power outlet only with the sup plied power supply cable or an exact equivalent Do not modify the supplied cable in any way Do not attempt to defeat ground ing and or polarization provisions Do not use extension cords Do not
6. route the power cord where it will he 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 sup port its weight Do not place it on a moveable cart that could tip over 3 EOS Figure 1 Controls and Connections Commandes et branchements Bedienelemente und Anschl sse Controlli e collegamenti Controles y Conexiones De bedieningsorganen en aansluitingen T POWER AMPLIFIER RB 1080 BRIDGED MONO PROTECTION POWER O Es RIGHT INPUT ROTEL AA POWER AMPLIFIER UNBALANCED MODEL NO RB 1080 POWER CONSUMPTION 550W LEFT INPUT BALANCED UNBALANCED 9e
7. EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE eis unr ceres rom Ticastim i Lucro and THX are repatared raderar of adim a RIGHT INPUT ea e s E 9090 T POWER CONSUMPTION SSOW an ncen 12v TRIGGER oF mE e e p iati PREAMPLIFIER VEH GH PREAMP OUTPUTS 2 R e ROTEL RB 1080 e e RIGHT INPUT BA E 9009 UNBALANCED MODEL NO RB 1080 Ki oF N om E 8 Partes RIGHT SPEAKER LEFT SPEAKER Drs ID Ee EE 7 Contents Figure 1 Controls and Connections Figure 2 Stereo Connections Figure 4 Balanced Input Connection CONTENTS isd csstsscescceccccuscessecessacdcecsssecscsas About Rotel cccccccccssssscscsssssceseseees Getting Started ccccscsssssssssseeseeseees A Few Precautions Placement AC Power and Control AC Power Input EE Power Switch BB and Power Indicator EZ Trigger ON OFF Mode Selector KI 12V Trigger Input EL and Output ELI Protection Circuitry EJ Input Signal Connections Input Selector Switch EM RCA Inputs unbalanced E XLR Inputs balanced EM Speaker Connection Speaker Selection Speaker Wire Selection Polarity and Phasing Speaker Connection EA Troubleshooting Front Panel Power Indicator Is Not Lit Fuse Replacement EE No Sound Protection Indicator Is Lit Specifications
8. f 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 conductor The wire may have clear insula tion 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 EA The RB 1080 has two pairs of color coded binding posts on the back panel These con nectors 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 1080 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 c
9. he front panel If it is lit see below If not check all of your connections and control settings on associated components Check the input selector switch on the RB 1080 back panel to be sure that its setting matches the type of input you are using Protection Indicator Is Lit The front panel indicator lights when the RB 1080 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 protec tion devices If the problem is not corrected or reoccurs there is a problem with the sys tem or the amplifier itself Specifications Continuous Power Output 20 20 kHz lt 0 03 Total Harmonic Distortion 20Hz 20kHz 8 ohms Intermodulation Distortion 60 Hz 7 kHz 4 1 Frequency Response 40 5 dB 3 dB Damping Factor 20 20 000 Hz 8 ohms Speaker Impedance Signal to Noise Ratio IHF A network Input Impedance Sensitivity Power Requirements Power Consumption Dimensions W x H x D Weight net All specifications are accurate at the time of printing Rotel reserves the right to make improvements without notice 200 watts ch into 8 ohms 0 03 0 03 15Hz 100kHz 1000 4 ohms minimum 116 dB 32 k Ohms 1 5volt 115 Volts 60 Hz U S version 230 Volts 50 Hz Eur
10. 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 po sition Trigger ON OFF Mode Selector El 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 1 2V signal is not present The front panel POWER SWITCH 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 m 10 and Output The jack labeled IN is for connecting the 3 5mm Plug Cable carrying a 12 volt trig ger 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 an other 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 Circuitry El The RB 1080 features a thermal protection cir cuit that protects the a
11. lection We recommend using loudspeakers with a nominal impedance of 4 ohms or higher with the RB 1080 You should exercise some cau tion 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 1080 See your authorized Rotel dealer if you have any questions Speaker Wire Selection Use insulated two conductor stranded wire to connect the RB 1080 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 spe cial high quality speaker cables Your autho rized Rotel dealer can help in the selection of appropriate 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 o
12. mplifier against potential damage in the event of extreme or faulty operating conditions Unlike many designs the RB 108 0 s protection circuit is indepen dent 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 tem peratures exceed safe limits Most likely you will never see this protection circuitry in action However should a faulty condition arise the amplifier will stop play ing and the 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 iden tify 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 lead ing to an overheating condition In very rare cases highly reactive or extremely low im pedance speaker loads could cause the pro tection circuit to engage If the protection circuitry triggers repeatedly and you are unable to isolate and correct the faulty condition contact your authorized Rotel dealer for assistance in troubleshooting Input Signal Connections The RB 1080 gives you a choice of two dif ferent kinds of input connection
13. onnector 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 RB 1080 Stereo Power Amplifier 8 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 1080 refer to the suggestions for the following conditions Front Panel Power Indicator Is Not Lit No main power to the RB 1080 Check the front panel power switch Make sure that it is set to the on position Check AC power con nections at the amplifier and the AC outlet Fuse Replacement E If everything checks out correctly and yov still cannot get the amplifier to turn on check for a blown fuse Disconnect the AC from the wall and remove the fuse holder El on the back panel If the fuse is blown replace with a new fuse and try again Note Make sure that the power cord is disconnected from the wall before checking or replacing the fuse Replace only with the identical size and type fuse 10 amp AGC No Sound If the amp is getting AC power but is pro ducing no sound check the Protection indi cator on t
14. opean version 5500 Watts 430 x 121 x 385 mm 173 8 x 43 4 x 153 16 in 15 5 kg 34 1 lb
15. r will provide years of musical enjoyment The RB 1080 is a high power two 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 capobility allows the RB 991 to drive the most demanding loud speakers Be aware that the RB 1080 is capable of high power levels in excess of 200 watts per chan nel Make sure that your speakers can handle the power of the RB 1080 If in doubt about your speakers ask your local Rotel audio retailer for advice The RB 1080 is straightforward in its instal lation and operation If you have experience with other stereo power amplifiers you shouldn t find anything perplexing Plug in a pair of high quality RCA cables from your preamp into the amplifier inputs wire up your speakers and enjoy Alternatively the RB 1080 provides an optional pair of balanced inputs for use with preamps or processors that of fer these low noise XLR connections If you choose this option you will need to reset a back panel switch selecting the balanced in puts Again nothing very confusing A Few Precautions Please read this manual carefully In addition to basic installation and operating instructions it provides valuable information on various RB 1080 system configurations as well as gen eral information that will help you get opti mum performance from yo
16. s conven tional unbalanced RCA type connections such as found on nearly all audio equipment or balanced XLR type connections for use with some high end preamps or digital processors featuring this lower noise connection NOTE To prevent loud potentially damag ing noises make sure the amplifier is turned off when you make any changes to the input signal configuration Input Selector Switch E Set the switch select the inputs that are being used Set it to Unbalanced if the RCA inputs are used Set it to Balanced if the XLR inputs are used RCA Inputs unbalanced El See Figure 2 When a component with RCA connectors such as a preamplifier or surround sound pro cessor supplies signals to the RB 1080 the RCA type phono plug inputs should be used Select high quality audio interconnect cables Connect each of the outputs from the pream plifier or signal processor to the correspond ing Unbalanced Input of the RB 1080 XLR Inputs balanced Ei See Figure 3 If you are using one of the high end pream plifiers or processors with low noise balanced signal outputs to drive your RB 1080 you may choose to use these low noise XLR type con nections See your authorized Rotel dealer for the appropriate cables Connect XLR audio interconnect cables from each of the outputs from the preamplifier or signal processor to the corresponding Bal anced Input of the RB 1080 7 EE Speaker Connection Speaker Se
17. ur system Please contact your authorized Rotel audio retailer for answers to any questions you might have In addition all of us at Rotel welcome your questions and comments Save the RB 1080 shipping carton and all en closed packing material for future use Ship ping or moving the RB 1080 in anything other than the original packing material may re sult in severe damage to your amplifier Fill out and send in the owner s registration card packed with the RB 1080 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 RB 1080 Stereo Power Amplifier 6 Placement The RB 1080 generates heat as part of its nor mal 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 chas sis and reasonable airflow through the in stallation location to prevent the amplifier from overheating Likewise remember the weight of the ampli fier when you select an installation location Make sure that the shelf or cabinet can sup port its considerable bulk Again use com mon sense AC Power and Control AC Power Input IE Because of its high power rating the RB 1080 can draw considerable current Therefore it should be plugged directly into a 2 pin po larized wall outlet
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