Rotel RA 921 OM

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SAFETY INSTRUCTIONS ¥ Explanation of Graphical Symbols The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert you 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 you to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. 1 CAUTION RISK OF ELECTRIC SHOCK 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. APPLICABLE FOR USA, CANADA OR WHERE APPROVED TO THE USAGE CAUTION : TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE 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. 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 four for future reference. 3. Head Warnings- All warnings on the appliance and in the operating instructions should be adhered to. 4. Follow Instructions- All operating and other instructions should be followed. 5. Water and Moisture- The appliance should not be used near water - for example, near a bathtub, washbowl, kitchen sink, Iaundry tub, in a wet basement, or near a swimmingpool, etc. 6. Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer. PORTABLE CART WARNING S3125A 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 impede the flow of air through the ventilation openings. 9. Heat- The appliance should be situated away from heat sources such as radiators, stoves, or other appliances that produce heat. 10. Power Source- The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance. 11. 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 at plugs, convenience receptacles, and the point where they exit from the appliance. 12. Cleaning- The appliance should be cleaned only as recommended by the manufacturer. 13. Nonuse Periods- The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. 14. Object and Liquid Entry- Care should be taken so that objects do not fall into and liquids not spilled into the inside of the appliance. 15. Damage Requiring Service - The appliance should be serviced by qualified service personnel when: A. The power-supply cord or the plug has been damaged; or B. Objects have fallen, or liquid has been spilled into the appliance; or C. The appliance has been exposed to rain; or D. The appliance does not appear to operate normally or exhibits a marked change in performance; or E. The appliance has been dropped, or the cabinet damaged. 16. Servicing- The user should not attempt to service the appliance beyond those means described in the operating instructions. All other servicing should be referred to qualified service personnel. - The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated. POOR, DULL SOUND ARE THE HEADS DIRTY? HEADS MAGNETIZED FROM LONG WOW & FLUTTER USAGE WITHOUT DEMAGNETIZING? ARE THE PINCH (TAPE DECK) ROLLER AND THE CAPSTAN DIRTY? CLEAN WITH PURE ALCOHOL, Q TIP COTTON BUDS OR A TAPE DECK CLEANING KIT. DEMAGNETIZE THE HEADS WITH A HAND HELD DEMAGNETIZER. DO NOT USE ABRASIVE DRY CLEANERS! DISTORTED BASS OVERLOADING SMALL SPEAKERS? TOO LOUD VOLUME CLIPPING YOUR AMPLIFIER? HUM IN SYSTEM AC CORD, VIDEO, DIGITAL AND AUDIO CABLES TOUCHING? THE AC CORD SHOULD BE SEPARATE FROM SIGNAL CABLES SIGNAL CABLES LAYING NEAR A LARGE POWER TRANSFORMER, SUCH AS IN A POWER AMPLIFIER? DEFECTIVE OR UNSHIELDED SIGNAL CABLES? OVERHEATING IS A COMPONENT STACKED ON THE AMPLIFIER? IS THE AMPLIFIER ENCLOSED IN A SMALL SPACE? A MINIMUM OF 3 TO 4 (~8-10 CM) CLEARANCE IS NEEDED ABOVE THE AMPLIFIERIN A SYSTEM. DO NOT STACK COMPONENTS ON THE AMPLIFIER. AN AMPLIFIER NEEDS TO BREATHE FREELY TO STAY COOL. POOR RECEPTION IS THE ANTENNA CONNECTED PROPERLY? IS THE (FM RADIO) ANTENNA MOUNTED AS HIGH AS POSSIBLE? IS THE ANTENNA ORIENTED FOR BEST RECEPTION? IS THE FM STATION DISTANT? AN OUTDOORS ANTENNA MAY BE NECESSARY. ADJUST THE ANTENNA FOR BEST RECEPTION. NOISY RECEPTION IS THE ANTENNA CONNECTED PROPERLY? IS THERE A (AM RADIO) LARGE ELECTRICAL MOTOR OR COMPRESSOR NEAR THE TUNER OR ANTENNA? NOISE IS EASILY RECEIVED IN THE AM BAND. ADJUST THE ANTENNA FOR BEST RECEPTION AND MINIMUM INTERFERENCE. CONTINUED PROBLEMS? ASK YOUR ROTELhi fi AUTHORIZED DEALERFOR HELP. 6

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one until the problem reappears. If you are unable to locate the source of the problem then you should consult your ROTELhi fi AUTHORIZED DEALERfor advice or service. A FINAL WORD FROM ROTEL Even though some people consider 25 watts per channel a modest power output we feel that this is a superb amplifier for smaller rooms or very efficient speakers. We have designed this amplifier for high performance using test equipment and the human ear. We believe that extensive listening and test equipment is both 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 and we thank you again for choosing our RA 921 stereo integrated amplifier to amplify your music. Enjoy the music! SPECIFICATIONS: Rated Power (20-20 kHz < 0.03%, 8 ohms) 25 Watts DIN Output (1 kHz, 1% THD, 4 ohms) 35 Watts Total Harmonic Distortion (20-20 kHz, 8 ohms) < 0.03% Intermodulation Distortion (60 Hz: 7 kHz, 4:1) < 0.03% Signal to Noise ratio, all inputs, IHF A > 98 dB, phono 78 dB Phono Sensitivity, Input Impedance 2.5 mV, 47 kOhms Phono Frequency Response 20-20,000 + 1.5 dB Amplifier Frequency Response 10-100,000 Hz +1 dB, -3 dB Tone Control Bass + 6 dB @ 100 Hz Treble + 6 dB @ 10 kHz Power requirement 115 volts 60 Hz or 230 volts 50 Hz Power consumption 180 watts Dimensions, W x H x D mm 440 x 92 x 304 inches 17.38 x 3.63 x 11.96 Weight (net) 4.8 kg, 10.56 Lb. All specifications are accurate at the time of printing. Rotel reserves the right to make improvements without notice. SYSTEM TROUBLESHOOTING HINTS NO POWER IS THE AC CORD CONNECTED TO A SWITCHED AC OUTLET? IS THE SWITCHED AC OUTLET TURNED ON? CHECK THE POWER FUSE FOR THE AC OUTLET. NO SOUND CORRECT INPUT SELECTED? IS THE AMPLIFIER TURNED ON? IS THE SOURCE COMPONENT TURNED ON? IS THE SOURCE COMPONENT CONNECTED PROPERLY? ARE THE SPEAKER WIRES CONNECTED PROPERLY? NO BASS IS THE SUBWOOFER AMPLIFIER TURNED ON? IS THE POWERED SUBWOOFER TURNED ON? ARE THE WOOFERS IN YOUR SPEAKERS DAMAGED? ARE THE SPEAKERS WIRED CORRECTLY? POOR TRACKING IS THE DISC DIRTY OR SCRATCHED? IS THE DISC (CD PLAYER) SEVERELY WARPED? IS THE DISC SEMI-TRANSPARENT OR POORLY MADE WITH VISIBLE PIN HOLES? 5 A WORD FROM All OF US AT ROTEL We thank you for purchasing one of our RA 921 stereo integrated amplifiers. We have been designing and manufacturing high quality, high performance audio electronics for more than 35 years. Rotel s passion for good sound and our love of music are well known worldwide. This integrated amplifier was designed to offer lifelike sound and is a natural extension of our love for music. We believe that the music played through this integrated amplifier will be a source of enjoyment to you for many years to come. We have designed this amp to be durable; easy to use and to have high fidelity to the original sound. Please read this owners manual to ensure that your amplifier is properly installed and able to offer optimum performance. We appreciate being a part of your life. FEATURES This stereo integrated amplifier has been designed for high performance. It has symmetrical circuit path, utilized to ensure absolutely identical timing integrity between the two channels of the amplifier. The power supply derives from a ROTEL designed power transformer. We also utilize ROTEL custom designed 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. We feel the extra expense of building in an excellent power supply is worthwhile because it is good for the music. INSTALLATION Please place the unit on a DRY, level surface away from direct sunlight.Avoid placing objects on top of the RA 921 that will block the cooling vents, as they may cause the amplifier to overheat.If the amplifier is mounted inside a cabinet, please be certain that there is adequate airflow to ensure proper cooling. Do not allow water or objects to fall into the amplifier, 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 amplifier in furniture designed to house Hi Fi components. This will allow the amplifier to be on a separate 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 ROTELhi fi Authorized Dealer for advice about component furniture and proper installation of audio components. ELECTRICAL REQUIREMENTS AND CLEANING 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, the label on the packing carton or consult with your ROTELhi fi Authorized Dealerfor confirmation of the correct voltage. Connect the Power Cord to your wall socket for AC power. We strongly recommend that the amplifier be connected to the mains wall socket, not an extension cord, for best sound quality. When you wish to disconnect the power cord from the wall always grasp 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 damage the power cord and create a hazardous condition.If you wish to clean the cabinet, 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.This could also damage the circuitry if any liquid or residue falls inside the amplifier. 2