Rotel RA970BX User's Manual
Contents
1. C 50 60 Hz 230 volts AC 50 60 Hz 300 watts 6 2 kgs 13 6 Ibs 440 w x 92 h x 347 d mm 17 3 8 w x 3 5 8 h x 13 11 16 d Alt specifications are accurate at the time of printing Rotel reserves the right to improvement without notice Measured pursuant to the Federal Trade Commission s Trade Regulation Rule or Power 52. LICABLE FOR U S A CANADA OR WHERE APPROVED TO THE USAGE CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT 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 A WORD FROM All OF US AT ROTEL We thank you for purchasing our RA 970BX Stereo Integrated Amplifier We have been designing and manufacturing high quality high performance audio electronics for more than 30 years This integrated amp was designed to offer lifelike sound and is a natural extension of our love for music Our passion for good sound and our love of music is well known We believe that the music played through the RA 970BX will be a source of enjoyment to you for many years to come Rotel is committed to making quality products to enhance your life We have designed this amp to be durable easy to use and to have high fidelity to the original sound Please read the owners manual to ensure that the amp is property installed and able to offer optimum performance We appreciate being a part of your life INSTALLATION OF THE RA 970BX Please place the unit on a DRY level surface away from direct sunlight Avoid placing objects on top of the RA 970BxX that will block the cooling vents as they may cause the amplifier to overheat If the amplifier is mounted inside a cabinet then please be certain that there is adequate air f
3. OFF when using headphones then we suggest they be connected as the REMOTE pair of speakers The Speaker Remote switch will NOT turn the DIRECT labeled Speaker Terminals OFF See note below in the Connections section The HEADPHONE jack will provide a convenient connection for your headphones If you have headphones with a 3 5 mm mini plug you should ask your ROTEL hi fi Authorized Dealer for an adapter plug to convert them for use with the headphone jack on the RA 970BX The VOLUME control will allow you to tum the Left L and Right R channels of music up or down in level at the same time This is a dual concentric design and is adjustable for individual Volume levels as well Merely hold the volume control still for the front OR rear section and rotate the other section to raise or lower the volume in the channel you wish to adjust Once the relative volume level between the two channels has been adjusted you will be able to raise or lower the volume in both channels simultaneously Rotation Clockwise will increase the volume rotation Counterclockwise will decrease the volume The RECORDING Selector Switch will send the signal FROM the Input of your choice TO the TAPE OUT connections on the back panel of the RA 970BX The Recording selector may be set to the same Input as the music you are listening to OR it may be set to a different Input while you listen to music As an example you might wish to listen to your CD player while making a recording
4. ROTEL RA 970BX Stereo Integrated Amplifier Owners Manual English French German section included Please write the serial number purchase date and ROTELhi fi AUTHORIZED DEALER for your records in the space provided Serial Number Purchase date ROTELhi fi AUTHORIZED DEALER SAFETY INSTRUCTIONS WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE CAUTION DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Explanation of Graphical Symbols The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the appliance 1 Read Instructions All the safety and operating instructions should be read before the appliance is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the appliance and in the operating instructions should be
5. adhered to 4 Follow Instructions All operating and use instructions should be followed 5 Water and Moisture The appliance should not be used near water for example near a bathtub kitchen sink laundry tub in a wet basement or near a swimming pool etc 6 Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer 6A An appliance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the appliance and cart combination to overturn 7 Wall or Ceiling Mounting The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer 8 Ventilation The appliance should be situated so that its location or position does not interfere with its proper ventilation For example the appliance should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet that may that may impede the flow of air through the ventilation openings 9 Heat The appliance should be situated away from heat sources such as radiators heat registers stoves or other appliances including amplifiers that produce heat PORTABLE CART WARNING 10 Power Sources The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance 41 Groun
6. d then Return to the RA 970BX Check all connections and read the owners manual for your recorder if you are in doubt about the labels The Speaker Terminals will accept two pairs of speakers The DIRECT connection has the shortest signal path for the clearest possible sound If you listen to headphones we suggest the use of the REMOTE speaker terminals for your convenience CONNECTION NOTE The DIRECT speaker terminals are ALWAYS ON and will NOT be turned OFF by the SPEAKER REMOTE SWITCH OR the HEADPHONE jack on the Front panel You may connect the speakers with bare wire Banana plugs or 4 mm speaker plugs Please be certain to observe the correct Polarity of the wires as well as the Channel Left and Right connections The RED Speaker Terminals are to be connected to the RED or Positive terminals on your speakers The BLACK Speaker Terminals are to be connected to the BLACK or Negative terminals on your speakers If you incorrectly make these connections you will have a vague image and very little bass response from your system If you are in doubt about the sound when listening then you should reverse the Positive and Negative connections on the back of ONE SPEAKER ONLY If the image becomes more specific and the bass improves then the speaker connections should be rechecked to ensure correct connection of both speakers You may ajso confirm this by placing the speakers face to face 75 mm apart 3 and playing music with strong bass conten
7. damage the power cord and create a hazardous condition We strongly recommend that the amplifier be connected to the mains wall socket not an extension cord If you wish to clean the cabinet on the RA 970BX we suggest that you clean it with a soft DRY cloth Never use cleaning compounds or solvents to clean the cabinet as they may damage the finish or remove the labels They could aiso damage the circuitry if any residue falls inside the amplifier There are NO user serviceable parts inside the RA 970BX Please do not open the cabinet as this will expose you to the risk of potentially dangerous high voltage and the risk of shock This could also damage the circuits and possibly void your warranty ROTEL STEREO INTEGRATED AMPUFIER RA 9708x RECOROING USTENING BASS TREBLE TONE 7 N ma 2 o OER POWER mons ewen or eso m tata Please refer to this drawing of the Front Panel when reading the section about Controls on the RA 970BX CONTROLS ON THIS INTEGRATED AMPLIFIER We have designed this integrated amplifier to be a no compromise design The controls are simple but comprehensive well labeled and easy to use For example the amplifier is able to send music to a tape recorder 2 that is independent of the music being heard This is possible because we have incorporated separate Recording and Listening controls on the Front panel The POWER button will turn the amplifier ON and OFF Push it in and the amplifier will turn ON The Power In
8. dicator Light will illuminate at the same time If you push the Power button again the power will go OFF and the power indicator light will extinguish To adjust the bass and treble content of the music set the Tone switch to the ON position This will allow the Bass and Treble controls to function When the Tone switch is set to the OFF position the tone controls are bypassed inside the amplifier We have incorporated this switch to allow for adjustment of the music s tonal balance OR to allow for the shortest circuit path for those people who choose not to use the Bass and Treble controls Our Bass and Treble controls also work over a less extreme range than many other designs We design our tone controls to adjust only the low bass or the high treble range of the music We do not allow our tone controls to color the all important middle ranges Vocal range of the music That is why we rate them for only 6 dB of boost or cut at 100 Hz or 10 kHz not the 10 or 12 dB common in many other designs Turning the Bass or Treble controls Clockwise will increase the amount of Bass or Treble Turning the controls Counterclockwise will decrease the amount of Bass or Treble We have included Speaker Switching on this amplifier and the label Speaker Remote refers to the way this switch operates The Speaker Remote switch will turn the REMOTE labeled Speaker Terminals ON or OFF If you listen with Headphones and would like to be able to turn your speakers
9. ding or Polarization The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated 12 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords and plugs convenience receptacles and the point where they exit from the appliance 13 Cleaning The appliance should be cleaned only as recommended by the manufacturer 14 Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time 15 Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through the openings 16 Damage Requiring Service The appliance should be serviced by qualified factory authorized service personnel when The power supply cord or the plug has been damaged or Objects have fallen or liquid has been spilled into the appliance or The appliance has been exposed to rain or The appliance does not appear to operate normally or exhibits a marked change in performance or e The appliance has been dropped or the enclosure damaged 17 Servicing The user should not attempt to service the appliance beyond that described in the operating instructions All other servicing should be referred to qualified factory authorized service personnel APP
10. low to ensure proper cooling Do not allow water or objects to fall into the RA 970BX as these will damage the circuitry Avoid installing the amplifier in a location where excessive humidity vibration or moisture will be a problem We recommend installing the RA 970BxX in furniture designed to house Hi Fi components This will allow the amp to be on its own shelf with nothing stacked on top of it This will minimize heat and potential interference from other components in your system Component furniture will also reduce or suppress vibration and all audio components will provide improved sound when free from vibration Ask your ROTEL hi fi Authorized Dealer for advice about component furniture and proper installation of audio components ELECTRICAL REQUIREMENTS This amplifier is designed to work on AC voltage and the correct voltage is displayed on the Back Panel Do not attempt to operate the amplifier on incorrect voltage as this will damage the circuitry and will void your warranty If you are in doubt about the correct voltage for this amplifier we suggest that you please read the label on the back panel or consult your ROTEL hi fi Authorized Dealer for confirmation of the correct voltage Connect the Power Cord to your wall socket for AC power When you wish to disconnect the power cord from the wall always hold the plug firmly and then pull it out of the wall socket Do not unplug the power cord from the wall by pulling the cord only This may
11. of a radio program To do this choose the source Input TUNER on the RECORDING selector and the CD Input on the LISTENING selector We suggest the RECORDING control be set to the OFF position if you are not recording This setting ensures maximum fidelity and freedom from interference for the RA 970BX When you are DUBBING copying Recorder to Recorder from one recorder to another the signal will be able to come FROM Tape 1 and may be RECORDED by Tape 2 NOTE The Tape 2 Tape OUT CANNOT be recorded by the Tape Deck connected to Tape1 The Tone Controls have NO effect on a recording while it is being made They will of course adjust the tonal balance during playback The LISTENING Selector Switch will select the source that you wish to hear We have provided Inputs for Aux 1 Aux 2 Tuner CD Tape 1 and Tape 2 If you wish to use a Turntable and an external phono stage we suggest the RQ 970BX Phono Equalizer This may be connected to Aux 1 or Aux 2 The Tuner CD Tape 1 and Tape 2 positions are all labeled for your convenience The Tape 2 position should be used for the Recorder you intend to record with the most as it is capable of Dubbing Tape 1 playback as well The Tape 1 position may be used for the audio outputs L and R of a Hi Fi VCR if you wish to play movies or TV shows through your stereo This is an increasingly popular way to view TV and movies at home If your VCR is monophonic then you will need to have a Y connector to adapt i
12. on or repair Connect the components one by one until the problem reappears If you are unable to locate the source of the problem then you should consult your ROTEL hi fi AUTHORIZED DEALER for advice or service A FINAL WORD FROM ROTEL ABOUT THIS INTEGRATED AMPLIFIER We have designed this amplifier for high performance using test equipment and the human ear We believe that both methods are useful in the design of audio electronics This is time consuming but we feel that the music benefits from this care and attention to detail We realize that there are many choices available in the market today and we thank you again for choosing our RA 970BX Stereo Integrated Amplifier to amplify your music Enjoy the music SPECIFICATIONS RA 970BX STEREO INTEGRATED AMPLIFIER Rated power RMS FTC specs 60 watts 8 ohms Both channels driven 20 20 000 Hz 0 03 THD DIN Output 1 kHz 1 THD Total Harmonic Distortion rated power intermodulation Distortion rated power Damping factor Input sensitivity Impedance all inputs Signal to Noise ratio all inputs Frequency response Tone control response Bass Treble Input overload level all inputs Power requirement Power consumption Weight Dimensions 90 watts 4 ohms 80 watts 8 ohms 100 watts 4 ohms 0 03 0 03 150 20 20 000 Hz 8 ohms 160 mV 8 kohms gt 95 dB IHF A network 10 100 000 Hz 1 dB 3 dB 6dB 100 Hz 6dB 10 kHz 5 volts 115 volts A
13. powerful ROTEL Designed Toroidal Power Transformer and ROTEL Custom Designed Slit Foil Capacitors to improve the speed and damping factor of the amplifier We believe in Highly Regulated Power Supplies and build these into all of our products Some companies design their amplifiers to have high peak power ratings and poor continuous power ratings This does allow them to build in low cost parts BUT it doesn t give the amplifier the control and power it needs for a large tympani drum bass note while having the ability to recreate the delicate sounds of a triangle being played at the same time We feel the extra expense of building in an excellent power supply is worthwhile because IT IS GOOD FOR THE MUSIC HUM AND NOISE IN A STEREO SYSTEM In any high fidelity stereo installation it is possible for noise to be created by the physical location of some of the components If your system has hum or excessive noise it is possible to diagnose this before trying to have repairs made to a properly functioning component If the system only hums with one source component then it should be unplugged from the system Turn the Volume Down or turn the Power OFF before you unplug the suspected component If the system still hums after the suspected component has been removed you may require service First though you should disconnect all of the other components EXCEPT the speakers If there is no hum after this then something in the system is either in need of relocati
14. t as a source The connection that has the most bass output is the correct connection The incorrect connection will have very little sound output as each of the two speakers will attempt to cancel the sound the other is making due to the opposite polarity of the drivers If you connect your speakers to the RA 970BX with bare wire strip approximately 1 1 2 mm 1 2 of the insulation from the end of the wire and connect to the terminal of the amplifier by turning it around the center post of the speaker terminal The RED or BLACK terminal knob should be turned Counterclockwise to extend the terminal for connecting When you have wrapped the wire around the post tighten the terminal by turning the Red or Black knob Clockwise to grasp the wire FIRMLY Ensure that NO LOOSE WIRE is outside the terminal housing Repeat this operation for all of the terminals If you use Banana plugs or 4 mm plugs they may be connected to the end of the Speaker Terminals by pushing them into the holes provided FEATURES OF THE RA 970BX STEREO INTEGRATED AMPLIFIER This stereo integrated amplifier has been designed for high performance It has Symmetrical Circuit Paths something we have been doing for a over a decade These are utilized to ensure absolutely identical timing 4 between the two channels of the amplifier If the music is swirling around in the room it is because the artist has chosen this effect not the RA 970BX The Power Supply derives from a large
15. t to play through both channels of your amplifier AKER IMPEDANCE sINIMUM ECT CR REMOTE 4 OHMS PER SPEAKER DIRECT AND REMOTE OHMS PER SPEAKER t 4 9999 9909 DIRECT SPEAKERS REMOTE SPEAKERS Please refer to this drawing of the Rear panel of the RA 970BX when connecting components or speakers CONNECTING COMPONENTS TO THIS INTEGRATED AMPLIFIER The back panel has the RCA Input connections and the Speaker Terminals for connection to the other components and speakers in your stereo system The Inputs are clearly labeled and the Channels are aiso designated Please be certain that the Left channel and Right channel connections are not reversed This will not harm anything but it will make the orchestra sound backwards for classical music fans Auxiliary 1 and 2 will be ideal for the connection of an external phono stage a stereo monitor TV with audio output Jacks a video game your personal computer audio output jacks or a Laser Disc player The CD and TUNER connections are clearly labeled for your convenience The TAPE 1 and 2 connections have IN and OUT connections These are to send a signal to OUT the recorder and then to receive a signal back from IN the recorder The labels of various brands of recorders are different but the usual labels are Tape In REC IN or Input and Tape Out REC OUT or Output The labeling can be confusing sometimes but the idea is to go From the RA 970BX to the recorder an
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