Denon DRA-685 User Manual

AM-FM STEREO RECEIVER

98

B

CD DVD/VDP

VCR

V.AUX

TUNER

SHIFT

REMOTE CONTROL UNIT RC-872

VOLUME

CHANNEL

DISPLAY

MUTING

VOLUME

TITLE

DISC SKIP+

MULTI

MULTI
VOL.

TAPE

MONITOR

CD·MD/CDR·DVD/VDP

TV

SET UP

SELECT

MENU

CHANNEL

ON

OFF

RECEIVER

DVD/VDP

TV VCR

PHONO

0

0

2

2

3

AUDIO

CD

MD/CD-R

VIDEO

POWER

DECK·VCR

6

7

6

7

VIDEO SELECT

SP-A SP-B

STATUS

RETURN

VOLUME

MODEBAND SHIFTMEMORY 12345678

ON / STANDBY

REMOTE
SENSOR

B

PHONES

ON / STANDBY

BALANCE

MULTI SOURCE

LOUDNESS

MODE

SELECT

VIDEO
SELECT

A

B

TONE

DEFEAT

SPEAKER

BASS TREBLE

LR

DRA-685

PRECISION AUDIO COMPONENT / AM-FM STEREO RECEIVER

TUNING

UPDOWN

PHONO

TUNER

VCR

CD

DVD / VDP

V. AUX

TAPE

MONITOR

AUTO

TUNER

.

B

MULTI SOURCE REMOTE CONTROL UNIT

RC-873

POWER

PHONO CD

DVD/VDP

OFF

ON

VCR V.AUX

TUNER

PRESET VOLUME

TAPE

MONITOR

DRA-685

OPERATING INSTRUCTIONS
MODE D’EMPLOI

FOR ENGLISH READERS PAGE 02 ~ PAGE 29 POUR LES LECTEURS FRANCAIS PAGE 2, 30 ~ PAGE 55

2 We greatly appreciate your purchase of this unit.
2 To be sure you take maximum advantage of all the

features this unit has to offer, read these instructions
carefully and use the set properly. Be sure to keep this
manual for future reference should any questions or
problems arise.

“SERIAL NO.

PLEASE RECORD UNIT SERIAL NUMBER ATTACHED TO
THE REAR OF THE CABINET FOR FUTURE REFERENCE”

2 Nous vous remercions pour l’achat de cet appareil.
2 Pour être sûr de profiter au maximum de toutes les

caractéristiques qu’offre cet appareil, lire avec soin ces
instructions et bien utiliser l’appareil. Toujours
conserver ce mode d’emploi pour s’y référer
ultérieurement en cas de question ou de problème.

“NO. DE SERIE

PRIERE DE NOTER LE NUMERO DE SERIE DE L’APPAREIL
INSCRIT A L’ARRIERE DU COFFRET DE FAÇON A POUVOIR LE
CONSULTER EN CAS DE PROBLEME.”

ENGLISH FRANCAIS

SAFETY PRECAUTIONS

2

RISK OF ELECTRIC SHOCK

CAUTION:

REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR
BACK). NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.

CAUTION

DO NOT OPEN

CAUTION

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT, FULLY INSERT.

ATTENTION

POUR ÉVITER LES CHOCS ÉLECTRIQUES, INTERODUIRE LA
LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU’ AU
FOND.

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 (servicing) instructions in the

This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.

This Class B digital apparatus meets all requirements of the
Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe B respecte toutes les
exigences du Règlement sur le matériel brouilleur du Canada.

literature accompanying the appliance.

WARNING: TO REDUCE THE RISK OF FIRE OR

ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR
MOISTURE.

NOTE ON USE / OBSERVATIONS RELATIVES A L’UTILISATION

2

• Avoid high temperatures.
Allow for sufficient heat dispersion when
installed on a rack.

• Eviter des températures élevées
Tenir compte d’une dispersion de chaleur
suffisante lors de l’installation sur une étagère.

• Handle the power cord carefully.
Hold the plug when unplugging the cord.

• Manipuler le cordon d’alimentation avec
précaution.
Tenir la prise lors du débranchement du
cordon.

• Keep the set free from moisture, water, and
dust.

• Protéger l’appareil contre l’humidité, l’eau et la
poussière.

• Unplug the power cord when not using the set
for long periods of time.

• Débrancher le cordon d’alimentation lorsque
l’appareil n’est pas utilisé pendant de longues
périodes.

* (For sets with ventilation holes)

• Do not obstruct the ventilation holes.

• Ne pas obstruer les trous d’aération.

• Do not let foreign objects in the set.

• Ne pas laisser des objets étrangers dans
l’appareil.

• Do not let insecticides, benzene, and thinner
come in contact with the set.

• Ne pas mettre en contact des insecticides, du
benzène et un diluant avec l’appareil.

• Never disassemble or modify the set in any
way.

• Ne jamais démonter ou modifier l’appareil
d’une manière ou d’une autre.

2

SAFETY INSTRUCTIONS

FIGURE A

EXAMPLE OF ANTENNA GROUNDING

AS PER NATIONAL
ELECTRICAL CODE

ANTENNA
LEAD IN
WIRE

GROUND
CLAMP

ELECTRIC
SERVICE
EQUIPMENT

ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)

GROUNDING CONDUCTORS
(NEC SECTION 810-21)

GROUND CLAMPS

POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)

NEC - NATIONAL ELECTRICAL CODE

1. Read Instructions – All the safety and operating instructions
should be read before the product is operated.

2. Retain Instructions – The safety and operating instructions
should be retained for future reference.

3. Heed Warnings – All warnings on the product and in the
operating instructions should be adhered to.

4. Follow Instructions – All operating and use instructions should
be followed.

5. Cleaning – Unplug this product from the wall outlet before
cleaning. Do not use liquid cleaners or aerosol cleaners.

6. Attachments – Do not use attachments not recommended by
the product manufacturer as they may cause hazards.

7. Water and Moisture – Do not use this product near water – for
example, near a bath tub, wash bowl, kitchen sink, or laundry
tub; in a wet basement; or near a swimming pool; and the like.

8. Accessories – Do not place this product on an unstable cart,
stand, tripod, bracket, or table. The product may fall, causing
serious injury to a child or adult, and serious damage to the
product. Use only with a cart, stand, tripod, bracket, or table
recommended by the manufacturer, or sold with the product.
Any mounting of the product should follow the manufacturer’s
instructions, and should use a
mounting accessory
recommended by the
manufacturer.

9. A product and cart
combination should be
moved with care. Quick
stops, excessive force,
and uneven surfaces may
cause the product and cart
combination to overturn.

10. Ventilation – Slots and openings in the cabinet are provided for
ventilation and to ensure reliable operation of the product and
to protect it from overheating, and these openings must not be
blocked or covered. The openings should never be blocked by
placing the product on a bed, sofa, rug, or other similar
surface. This product should not be placed in a built-in
installation such as a bookcase or rack unless proper
ventilation is provided or the manufacturer’s instructions have
been adhered to.

11. Power Sources – This product should be operated only from
the type of power source indicated on the marking label. If
you are not sure of the type of power supply to your home,
consult your product dealer or local power company. For
products intended to operate from battery power, or other
sources, refer to the operating instructions.

12. Grounding or Polarization – This product may be equipped with
a polarized alternating-current line plug (a plug having one
blade wider than the other). This plug will fit into the power
outlet only one way. This is a safety feature. If you are unable
to insert the plug fully into the outlet, try reversing the plug. If
the plug should still fail to fit, contact your electrician to replace
your obsolete outlet. Do not defeat the safety purpose of the
polarized plug.

13. 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 product.

15. Outdoor Antenna Grounding – If an outside antenna or cable
system is connected to the product, be sure the antenna or
cable system is grounded so as to provide some protection
against voltage surges and built-up static charges. Article 810
of the National Electrical Code, ANSI/NFPA 70, provides
information with regard to proper grounding of the mast and
supporting structure, grounding of the lead-in wire to an
antenna discharge unit, size of grounding conductors, location
of antenna-discharge unit, connection to grounding electrodes,
and requirements for the grounding electrode. See Figure A.

16. Lightning – For added protection for this product during a
lightning storm, or when it is left unattended and unused for
long periods of time, unplug it from the wall outlet and
disconnect the antenna or cable system. This will prevent
damage to the product due to lightning and power-line surges.

17. Power Lines – An outside antenna system should not be
located in the vicinity of overhead power lines or other electric
light or power circuits, or where it can fall into such power
lines or circuits. When installing an outside antenna system,
extreme care should be taken to keep from touching such
power lines or circuits as contact with them might be fatal.

18. Overloading – Do not overload wall outlets, extension cords, or
integral convenience receptacles as this can result in a risk of
fire or electric shock.

19. Object and Liquid Entry – Never push objects of any kind into
this product through openings as they may touch dangerous
voltage points or short-out parts that could result in a fire or
electric shock. Never spill liquid of any kind on the product.

Servicing – Do not attempt to service this product yourself

20.
as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to
qualified service personnel.

21.

Damage Requiring Service – Unplug this product from the
wall outlet and refer servicing to qualified service

personnel
under the following conditions:
a) When the power-supply cord or plug is damaged,
b) If liquid has been spilled, or objects have fallen into the

product,
c) If the product has been exposed to rain or water,
d) If the product does not operate normally by following the

operating instructions. Adjust only those controls that are

covered by the operating instructions as an improper

adjustment of other controls may result in damage and will

often require extensive work by a qualified technician to

restore the product to its normal operation,
e) If the product has been dropped or damaged in any way,

and
f) When the product exhibits a distinct change in performance

– this indicates a need for service.

22. Replacement Parts – When replacement parts are required, be
sure the service technician has used replacement parts
specified by the manufacturer or have the same characteristics
as the original part. Unauthorized substitutions may result in
fire, electric shock, or other hazards.

23. Safety Check – Upon completion of any service or repairs to
this product, ask the service technician to perform safety
checks to determine that the product is in proper operating
condition.

24. Wall or Ceiling Mounting – The product should be mounted to
a wall or ceiling only as recommended by the manufacturer.

25. Heat – The product should be situated away from heat sources
such as radiators, heat registers, stoves, or other products
(including amplifiers) that produce heat.

3

ENGLISH

r

9

8

B

0

0

2

2

3

6

7

6

7

t yu

B

2

Thank you for choosing the DENON AM-FM Stereo receiver. This remarkable component has been engineered to provide outstanding high
fidelity reproduction of your favorite music sources.
As this product is provided with an immense array of features, we recommend that before you begin hookup and operation that you review the
contents of this manual before proceeding.

INTRODUCTION

TABLE OF CONTENTS

Before Using …………………………………………………………4

z

Cautions on Installation ………………………………………………5

x

Cautions on Handling…………………………………………………5

c

Features ………………………………………………………………5

v

Connections ………………………………………………………6~10

b

Part Names and Functions ……………………………………10, 11

n

Remote Control Unit……………………………………………12~17

m

2 ACCESSORIES

Check that the following parts are included in addition to the main unit:

Operating instructions

q

Warranty

w

Service station list

e

Remote control unit (RC-872)

r

……………………………………………………………1

……………………………………………1

…………………………………………………1

……………………………………1

(RC-873)……………………………………1

(RC-872) (RC-873)

Operations ………………………………………………………17~23

,

Listening to the Radio …………………………………………24~26

.

Initialization of the Microprocessor ………………………………27

⁄0

Last function memory ………………………………………………27

⁄1

Troubleshooting ……………………………………………………28

⁄2

Specifications ………………………………………………………29

⁄3

Batteries (R6P/AA) …………………………………………………2

t

(R03/AAA) ………………………………………………2

AM loop antenna …………………………………………………1

y

FM indoor antenna…………………………………………………1

u

1

BEFORE USING

Pay attention to the following before using this unit:

• Moving the set
To prevent short circuits or damaged wires in the connection

cords, always unplug the power cord and disconnect the
connection cords between all other audio components when
moving the set.

• Before turning the power operation switch on
Check once again that all connections are proper and that there are

not problems with the connection cords. Always set the power
operation switch to the standby position before connecting and
disconnecting connection cords.

4

• Store this instructions in a safe place.
After reading, store this instructions along with the warranty in a

safe place.

• Note that the illustrations in this instructions may differ from

the actual set for explanation purposes.

2

B

CAUTIONS ON INSTALLATION

Noise or disturbance of the picture may be generated if this unit or
any other electronic equipment using microprocessors is used near a
tuner or TV.
If this happens, take the following steps:

• Install this unit as far as possible from the tuner or TV.

• Set the antenna wires from the tuner or TV away from this unit’s
power cord and input/output connection cords.

• Noise or disturbance tends to occur particularly when using indoor
antennas or 300 Ω/ohms feeder wires. We recommend using

outdoor antennas and 75 Ω/ohms coaxial cables.

For heat dispersal, leave at least 10 cm of space between the
top, back and sides of this unit and the wall or other compo­nents.

3

CAUTIONS ON HANDLING

ENGLISH

10 cm or more

10 cm or more

Wall

• Switching the input function when input jacks are not

connected

A clicking noise may be produced if the input function is switched
when nothing is connected to the input jacks. If this happens,
either turn down the VOLUME control or connect components to
the input jacks.

• Muting of PRE OUT jacks
The PRE OUT jacks include a muting circuit. Because of this, the

output signals are greatly reduced for several seconds after the
power operation switch is turned on.
If the volume is turned up during this time, the output will be very
high after the muting circuit stops functioning. Always wait until
the muting circuit turns off before adjusting the volume.

4

FEATURES

1. Multi Room Music Entertainment System

Multi Source Function:

This unit’s Multi Source function lets you select different audio
or video sources for viewing or listening Different sources can
thus be enjoyed in the main room and the subroom
simultaneously. This novel feature gives you considerable
flexibility when setting up and enjoying your system with the
this unit. The output level, adjustable by the remote
commander, is as much as 1V, enough to operate the optional
power amplifier placed in a subroom.

2. Powerful, Versatile Amplifier

High-Quality Power Amplifier:

High-speed, high-power transistors employed in a rational
circuit configuration reflect DENON’S advanced amplifier
technology and ensure a very hefty, clean power output.

3. Signal Level Divided Construction (SLDC)

The circuits handling low-level and high-level signals have been
divided into separate blocks to ensure that influences from these
signals on each other are held to an absolute minimum. This
chassis design in the this unit is called the Signal Level Divided
Construction (SLDC). Signals for output are cleaner than before,
allowing them to be reproduced with even greater fidelity and
clarity.

• Whenever the power operation switch is in the STANDBY

state, the apparatus is still connected on some AC line
voltages.
Please be sure to unplug the cord when you leave home for,
say, a vacation.

4. Remote Control Functions

• Remote Control unit with pre-memory function (RC-872):
This unit comes with a remote control unit equipped with a
pre-memory function. The remote control command codes for
DENON remote controllable AV components as well as for DVD
players, video decks, TVs, etc., of other major manufacturers
are prestored in the memory.

• Multi Source Remote Control Unit (RC-873):
This unit comes with the Multi Source Remote Control Unit,
which operates the Multi Source Output and commands the
receiver to select the function, recalling preset stations, and
adjust the volume level from a subroom.

5

ENGLISH

L

R

L

R

R LR L

R L

R L

R L

R L

+

-

+

-

SPEAKER SYSTEMS

IMPEDANCE A or B : 4 16 A + B : 8 16

VIDEO

PRE OUT

MAIN IN

B A

SWITCHED

TOTAL 120W(1A.)MAX.

120V 60Hz

AC OUTLETS

AUDIO

AUDIO

OUT

IN

OUT

OUT

IN

OUT

IN

DVD

/

VDP

VCR

MULTI
SOURCE

MULTI

SOURCE

ANTENNA

V.AUX

MONITOR

PHONO

CD

V.AUX

VCR

DVD

/

VDP

TAPE

VCRVCR

TAPE

ROOM TO ROOM

(

REMOTE CONTROL

)

SIGNAL
GND

LOOP
ANT.

AM

FM
COAX.
75

LINE IN

LINE OUT

LINE OUT

R

INPUTOUTPUT

LRL

L

R

L

R

L

R

L

R

R

OUTPUT

L

R

L

++

R

L

INPUT

OUTPUT

AUX OUT

LINE IN

DIGITAL AUDIODIGITAL AUDIO

5

CONNECTIONS

• Do not plug in the power cord until all connections have been
completed.

• Be sure to connect the left and right channels properly (left
with left, right with right).

• Insert the plugs securely. Incomplete connections will result in
the generation of noise.

• Use the AC OUTLETS for audio equipment only. Do not use

them for hair driers, etc.

Connecting the audio components

Turntable (MM cartridge)

NOTE:

This unit cannot be used
with MC cartridges
directly. Use a separate
head amplifier or step­up transformer.

Ground wire

CD player

• Note that binding pin plug cords together with power cords or
placing them near a power transformer will result in generating
hum or other noise.

• If hum or other noise is produced when the ground wire is
connected, disconnect it.

• Noise or humming may be generated if a connected
component is used independently without turning the power of
this unit on. If this happens, turn on the power of the this unit.

Connecting a CD player

Connect the CD player’s analog output jacks (ANALOG
OUTPUT) to this unit’s CD jacks using pin plug cords.

PRE OUT jacks
MAIN IN jacks

Use these jacks when using
another separate amplifier or a
pre-main amplifier.

AC CORD

AC 120 V, 60 Hz

Tape deck

Connecting a tape deck

Connections for recording:

Connect the tape deck’s recording input jacks
(LINE IN or REC) to this unit’s tape recording
(OUT) jacks using pin plug cords.

Connections for playback:

Connect the tape deck’s playback output jacks
(LINE OUT or PB) to this unit’s tape playback
(IN) jacks using pin plug cords.

Sub room

RC-617 (Sold Separately)

Infrared sensor

Power amplifier

RC-616 (Sold Separately)

Infrared retransmitter

Connecting the AC OUTLETS

AC OUTLETS

• SWITCHED
(total capacity – 120 W (1 A.)

The power to this outlet is turned on and off in conjunction with the POWER
operation switch on the main unit, and when the power is switched between
on and standby from the remote control unit.
No power is supplied from these outlets when this unit’s power is at standby.
Never connect equipment whose total capacity is above 120 W (1 A.)

NOTE:

Use the AC OUTLETS for audio equipment only. Do not use them for hair
driers, etc.

6

ENGLISH

R LR L

R L

R L

R L

R L

+

-

+

-

SPEAKER SYSTEMS

IMPEDANCE A or B : 4 16 A + B : 8 16

VIDEO

PRE OUT

MAIN IN

B A

SWITCHED

TOTAL 120W(1A.)MAX.

120V 60Hz

AC OUTLETS

AUDIO

AUDIO

OUT

IN

OUT

OUT

IN

OUT

IN

DVD

/

VDP

VCR

MULTI
SOURCE

MULTI

SOURCE

ANTENNA

V.AUX

MONITOR

PHONO

CD

V.AUX

VCR

DVD

/

VDP

TAPE

VCRVCR

TAPE

ROOM TO ROOM

(

REMOTE CONTROL

)

SIGNAL
GND

LOOP
ANT.

AM

FM
COAX.
75

AUDIO OUT

VIDEO OUT

AUDIO IN

AUDIO OUT

VIDEO OUT

VIDEO IN

VIDEO OUT

VIDEO IN

AUDIO OUT

IN

VIDEO

ROUT

VIDEO

OUT

L

AUDIO

L

R

R OUT

VIDEO

OUT

L

AUDIO

R

L

R

L

R

L

L

R

R OUT IN

AUDIO

VIDEO

OUT IN

LRL

R

L

R

L

VIDEO IN

L

R

Connecting the video equipments

• To connect the video signal, connect using a 75 Ω/ohms video signal cable cord. Using an improper cable can result in a drop in sound quality.

• When making connections, also refer to the operating instructions of the other components.

TV or DBS tuner

Connecting a TV/DBS tuner

TV/DBS

• Connect the TV’s or DBS tuner’s video output jack
(VIDEO OUTPUT) to the (yellow) V.AUX IN jack

VIDEO

using a 75 Ω/ohms video coaxial pin plug cord.

MONITOR OUT

• Connect the TV’s video input jack (VIDEO
INPUT) to the MONITOR OUT jack
using a 75 Ω/ohms video coaxial pin plug
cord.

• Connect the TV’s or DBS tuner’s audio output jacks
(AUDIO OUTPUT) to the V.AUX IN jacks using

AUDIO

pin plug cords.

LD player (VDP) or DVD player

Connecting a video disc player VDP or a DVD player

• Connect the video disc player’s (DVD player’s) video output jack (VIDEO OUTPUT) to

VIDEO

the (yellow) DVD/VDP IN jack using a 75 Ω/ohms video coaxial pin plug cord.

• Connect the video disc player’s (DVD player’s) analog audio output jacks (ANALOG
AUDIO OUTPUT) to the DVD/VDP IN jacks using pin plug cords.

AUDIO

VIDEO

Monitor TV

Connecting a video decks

Video input/output connections:

• Connect the video deck’s video output jack (VIDEO OUT) to the

VIDEO

(VIDEO IN) to the (yellow) VCR OUT jack using 75 Ω/ohms
video coaxial pin plug cords.

Connecting the audio output jacks

• Connect the video deck audio output jacks (AUDIO OUT) to the

AUDIO

IN) to the VCR OUT jacks using pin plug cords.

Video deck

(yellow) VCR IN jack, and the video deck’s video input jack

VCR IN jacks, and the video deck’s audio input jacks (AUDIO

AUDIO

VIDEO

Sub room

Monitor TV

7

ENGLISH

R L

R L

R L

VIDEO

AUDIO

OUT

IN

OUT

OUT

IN

OUT

IN

DVD

/

VDP

VCR

MULTI
SOURCE

MULTI

SOURCE

ANTENNA

V.AUX

MONITOR

PHONO

CD

V.AUX

VCR

DVD

/

VDP

TAPE

VCRVCR

TAPE

ROOM TO ROOM

(

REMOTE CONTROL

)

SIGNAL
GND

LOOP
ANT.

AM

FM
COAX.
75

1

4

2

3

Connecting the antenna terminals

DIRECTION OF
BROADCASTING
STATION

FM ANTENNA

75 Ω/ohms
COAXIAL
CABLE

AM LOOP
ANTENNA
(An Accessory)

AM OUTDOOR
ANTENNA

GROUND

FM INDOOR ANTENNA

(An Accessory)

AM loop antenna assembly

Connect to the AM
antenna terminals.

1.

Loosen by turning
counterclockwise.

Connection of AM antennas

2. Insert the cord. 3. Tighten by turning
clockwise.

Remove the vinyl
tie and take out the
connection line.

a. With the antenna

on top any stable
surface

Mount

Bend in the reverse
direction.

Note to CATV system installer:

This reminder is provided to call the CATV system installer’s attention to
Article 820-40 of the NEC which provides guidelines for proper
grounding and, in particular, specifies that the cable ground shall be
connected to the grounding system of the building, as close to the point
of cable entry as practical.

b. With the antenna

attach to a wall.

Instllation hole
Mount on wall, etc.

NOTES:

• Do not connect two FM antennas simultaneously.

• Even if an external AM antenna is used, do not disconnect AM loop
antenna.

• Make sure AM loop antenna lead terminals do not touch metal parts of
the panel.

8

(L) (R)(L) (R)

R LR L

R L

R L

R L

R L

+

-

+

-

SPEAKER SYSTEMS

IMPEDANCE A or B : 4 16 A + B : 8 16

VIDEO

PRE OUT

MAIN IN

B A

SWITCHED

TOTAL 120W(1A.)MAX.

120V 60Hz

AC OUTLETS

AUDIO

AUDIO

OUT

IN

OUT

IN

OUT

IN

DVD

/

VDP

VCR

MULTI
SOURCE

MULTI

SOURCE

ANTENNA

V.AUX

MONITOR

PHONO

CD

V.AUX

VCR

DVD

/

VDP

TAPE

VCRVCR

TAPE

ROOM TO ROOM

(

REMOTE CONTROL

)

SIGNAL
GND

LOOP
ANT.

AM

FM
COAX.
75

Speaker system connections

ENGLISH

• Connect the speaker terminals with the speakers making sure that
like polarities are matched (<with<,>with>). Mismatching of
polarities will result in weak central sound, unclear orientation of
the various instruments, and the sense of direction of the stereo
being impaired.

• When making connections, take care that none of the individual
conductors of the speaker cord come in contact with adjacent
terminals, with other speaker cord conductors, or with the rear
panel.

NOTE:
NEVER touch the speaker terminals when the power is on.
Doing so could result in electric shocks.

Connecting the speaker terminals

1. Loosen by turning
counterclockwise.

2. Insert the cord. 3. Tighten by turning
clockwise.

Speaker Impedance

• When speaker systems A and B are use separately, speakers with
an impedance of 4 to 16 Ω/ohms can be connected for use as
speakers.

• Be careful when using two pairs of speakers (A + B) at the same
time, since use of speakers with an impedance of 8 to 16 Ω/ohms.

• The protector circuit may be activated if the set is played for long
periods of time at high volumes when speakers with an
impedance lower than the specified impedance are connected.

Connecting banana plugs

banana plug

Turn clockwise to tighten, then insert the banana plug.

• Precautions when connecting speakers
If a speaker is placed near a TV or video
monitor, the colors on the screen may be
disturbed by the speaker’s magnetism. If
this should happen, move the speaker
away to a position where it does not have
this effect.

SPEAKER SYSTEMS

System B

SPEAKER SYSTEMS

System A

9

ENGLISH

VOLUME

MODEBAND SHIFTMEMORY 12345678

STANDBY

REMOTE
SENSOR

B

PHONES

ON / STANDBY

BALANCE

MULTI SOURCE

LOUDNESS

MODE

SELECT

VIDEO

SELECT

A

B

TONE

DEFEAT

SPEAKER

BASS TREBLE

LR

DRA-685

PRECISION AUDIO COMPONENT / AM-FM STEREO RECEIVER

TUNING

UPDOWN

PHONO

TUNER

VCR

CD

DVD / VDP

V. AUX

TAPE

MONITOR

!7 !6 !5

!4

!3

!1!2

!0oiuytrewq

AUTO CH

TONE SP-A TUNER

6

Protector circuit

This unit is equipped with a high-speed protection circuit. This circuit protects the internal circuitry from damage due to

•
large currents flowing if the speaker jacks are not completely connected or if an output is generated by a short circuit.
In such a case, the protection circuit will operate to cut off the output to the speakers. Should this happen, turn the
power off and check the speaker connections. Then turn the power on again. After muting for several seconds, the
receiver should be operating normally.
If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around
the unit, switch off the power and contact a DENON service center.

Note on speaker impedance

The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with

•
an impedance lower than the specified impedance (for example speakers with an impedance of lower than 4 Ω/ohms)
are connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set’s power, wait for the set
to cool down, improve the ventilation around the set, then turn the power back on.

PART NAMES AND FUNCTIONS

Front Panel

• For details on the functions of these parts, refer to the pages given in parentheses ( ).

Power operation switch …………………………………………(17)

q
w
e
r
t
y
u
i
o

Headphone jacks (PHONES) ……………………………………(22)
SPEAKER A/B buttons……………………………………………(17)
VIDEO SELECT button …………………………………………(22)
MULTI SOURCE buttons ……………………………………(19, 20)
TONE DEFECT button ……………………………………………(18)
LOUDNESS button ………………………………………………(18)
BASS adjustment control ………………………………………(18)
TREBLE adjustment control ……………………………………(18)

BALANCE control …………………………………………………(18)

!0

VOLUME control …………………………………………………(18)

!1

Preset memory selector buttons ………………………………(26)

!2

Display

!3

Power indicator……………………………………………………(17)

!4

Remote control sensor (REMOTE SENSOR) …………………(12)

!5

TUNING buttons ……………………………………………(25, 26)

!6

Input source selector buttons …………………………………(18)

!7

10