Rotel-RB-1091-OM 电路图 维修手册.pdf

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1、Owners Manual Manuel dutilisation Bedienungsanleitung Manuale di Istruzioni Manual de Instrucciones Gebruiksaanwijzing Instruktionsbok RB-1091 Mono Power Amplifi er Amplifi cateur de Puissance Monophonique Mono-Endstufe Finale di Potenza Mono Etapa de Potencia Monofnica Mono Eindversterker Monosluts

2、teg RadioFans.CN 收音机爱 好者资料库 2 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

3、 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

4、 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 eratin

5、g 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

6、 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. Co

7、nnect 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,

8、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

9、 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

10、been exposed to rain. The unit shows signs of improper operation 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

11、 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. Rotel products are designed to comply with international directives on the Restriction of Hazardous Substances (RoH

12、S) 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. RB-1091 Mono Power Amplifi er Rad

13、ioFans.CN 收音机爱 好者资料库 3English Figure 1: Controls and Connections Commandes et branchements Bedienelemente und Anschlsse Pannello frontale e posteriore Controles y Conexiones De bedieningsorganen en aansluitingen Kontroller och anslutningar RadioFans.CN 收音机爱 好者资料库 4 Figure 2: Input and Output Connect

14、ions Anschlussdiagramm Prises dentres et de sorties Schema di collegamento Conexiones de Entrada y de Salida De in- en uitgangsaansluitingen In- och utgngar See page 7 for information on using the Speakon speaker output connectors. Important Notes When making connections be sure to: Turn off all the

15、 components in the system before hook- ing up any components, including loudspeakers. Turn off all components in the system before changing any of the connections to the system. It is also recommended that you: Turn the volume control of the amplifi er all the way down before the amplifi er is turne

16、d on or off. Single Wire ConnectionBiwire Connection RB-1091 Mono Power Amplifi er 5 About Rotel A family whose passionate interest in music led them to manufacture high fi delity components of uncompromising quality founded Rotel over 40 years ago. Over the years that passion has remained undiminis

17、hed 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 fi ne tuning each new product until it reaches their exacting musical standards. They are free to choos

18、e components from around the world in order to make that product the best they can. You are likely to fi nd capacitors from the United Kingdom and Germany, semicon- ductors from Japan or the United States, and toroidal power transformers manufactured in Rotels own factory. Rotels reputation for exce

19、llence 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 bu

20、ying this product and hope it will bring you many hours of enjoyment. Getting Started Thank you for purchasing the Rotel RB-1091 Mono Power Amplifi er. When used in a high- quality music or home theater system, your Rotel amplifi er will provide years of musical enjoyment. The RB-1091 is a sophistic

21、ated single-channel power amplifi er. Its digital amplifi er circuitry, switching power supply, premium components, and Rotels Balanced Design ensure superb sound quality. High current capability allows the RB-1091 to drive diffi cult speaker loads with ease. Operating Features Single channel amplif

22、ier. User selectable power on/off configuration: manual or controlled by remote 12 volt trigger signal. 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 inst

23、ructions, it pro- vides information on various RB-1091 system confi gurations. 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 fut

24、ure use. Shipping or moving the RB-1091 in anything other than the original packing material may result in severe damage to your amplifi er. 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.

25、 Placement The RB-1091 generates heat as part of its normal operation. The heat sinks and ventila- tion openings in the amplifi er 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 r

26、easonable airfl ow through the installation location, to prevent the amplifi er from overheating. Likewise, remember the weight of the amplifi er when you select an installation location. Make sure that the shelf or cabinet can support its weight. English Contents Important Safety Information .2 Fig

27、ure 1: Controls and Connections 3 Figure 2: Input and Output Connections 4 About Rotel .5 Getting Started .5 Operating Features 5 A Few Precautions 5 Placement 5 AC Power and Control .6 AC Power Input 9 6 Power Switch and Indicator 12 6 Turn On/Off Mode Selector 7 6 +12V Trigger Input and Output 8 6

28、 Protection Indicators 3 .6 Input Signal Connection 4 .6 Speaker Connection .7 Speaker Selection 7 Speaker Wire Selection 7 Polarity and Phasing 7 Conventional Speaker Wire Connections 5 7 Speakon Speaker Connection 6 7 Troubleshooting .8 Front Panel Power Indicator Is Not Lit 8 No Sound 8 Protectio

29、n Indicator Is Lit 8 Specifi cations .8 6 RB-1091 Mono Power Amplifi er AC Power and Control AC Power Input 9 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 onl

30、y 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 9 on the back panel of the amplifi er. Plug the other end into an appropriate AC outlet. Your RB-1091 is

31、confi gured at the factory for the proper AC line voltage in the country where you purchased it (USA: 120 volts/60 Hz, Europe: 230 volts/50 Hz). The AC line confi guration 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 a

32、mplifier 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 hom

33、e for an extended period of time, it is a sensible precaution to unplug your amplifi er. Power Switch and Indicator 12 The Power Switch is located on the front panel. To turn the amplifi er on (or to activate either of the optional automatic power-on modes), push the switch in. The LED indicator abo

34、ve the switch will light, indicating that the amplifi er is turned on. To turn the amplifi er off, push the button again and return it to the out position. Turn On/Off Mode Selector 7 The RB-1091 can be turned on and off auto- matically by using its “12V Trigger” system. The Turn On/Off Mode Selecto

35、r 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 3.5

36、mm Jack labeled IN. 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 8 The jack labeled IN is for connecting th

37、e 3.5mm Plug/Cable carrying a +12 volt trigger signal to turn the amplifi er on and off. To use this feature the adjacent switch 7 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 f

38、or 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 3 Thermal and protection circuits protect the am- plifi er against potential damage

39、in the event of extreme or faulty operating conditions. Unlike many designs, the RB-1091s 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 amplifi er if safe

40、 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 amplifi er will stop playing and the PROTECTION LED on the front panel will light. If this happens, turn the amplifi er off, let

41、it cool down for several minutes, and attempt to identify and correct the problem. When you turn the amplifi er 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 shorte

42、d 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 4 See Figure 2 The RB-1091 has a standard unbalanced RCA- type input

43、connector, the type used on nearly all audio equipment. This RCA input accept audio signals from preamplifi ers or surround sound processors. Use high quality audio interconnect cables for best performance. 7English Speaker Connection See Figure 2 The RB-1091 has two sets of dual binding post speake

44、r 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

45、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 wire to connect the RB-1091 to the speakers. The size and quality o

46、f 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 s

47、pecial 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 amplifi er connection must be consistent so all the speakers

48、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 amplifi er connection. If you ar