Rotel RA-921 Bedienungsanleitung

Rotel Empfänger RA-921

Lesen Sie kostenlos die 📖 deutsche Bedienungsanleitung für Rotel RA-921 (5 Seiten) in der Kategorie Empfänger. Dieser Bedienungsanleitung war für 11 Personen hilfreich und wurde von 2 Benutzern mit durchschnittlich 4.5 Sternen bewertet

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RA921
Stereo Integrated Amplifier
OWNERS MANUAL
Please write the serial number, date of purchase and the name of Rotelhi fi Authorized
Dealer in the spaces provided for your future reference.
Serial number . Purchase date .
Rotel hi fi Authorized Dealer .
THE ROTEL CO., LTD.
SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150, JAPAN
Y-298A-E-9710F/S-RG
082 OMRA-921
PRINTED IN JAPAN
SAFETY INSTRUCTIONS
Â¥ 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. Cl eaning - 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 AMPLIFIER IN 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 DEALER FOR HELP.
6
one until the problem reappears. If you are unable to locate the source of the problem then you should
consult your for advice or service. ROTEL AUTHORIZED DEALERhi fi
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 , level surface away from direct sunlight.DRY 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 Dealer for 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

Produktspezifikationen

Marke: Rotel
Kategorie: Empfänger
Modell: RA-921

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