Rotel RA-921 Manual de Usario

Rotel receptor RA-921

Lee a continuación 📖 el manual en español para Rotel RA-921 (5 páginas) en la categoría receptor. Esta guía fue útil para 8 personas y fue valorada con 4.5 estrellas en promedio por 2 usuarios

Descargar PDF

Página 1/5

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

¥ 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.

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.

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?

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.

Especificaciones del producto

Marca:	Rotel
Categoría:	receptor
Modelo:	RA-921
Color del producto:	Wit
Activos:	400 W
Pies antideslizantes:	Ja
Material-del-cuchillo:	Roestvrijstaal
Diámetro del vultrechter:	50.8 mm