Kenwood KVR-A90R User manual

AM-FM STEREO RECEIVER
KVR-A9OR
KVR-A7OR
KR-A70O
INSTRUCTION MANUAL
KENWOOD
For your records
Record the serial number, found on the back of the unit, in the
spaces designated on the warranty card, and in the space
provided below. Refer to the mode! and serial numbers
whenever you call upon your dealer for information or service
on this product.
Model Ss Serial Number.
Unpacking
Unpack the unit carefully and make sure that all accessories
are put aside so they will not be lost.
Examine the unit for any possibility of shipping damage. If
your unit is damaged or fails to operate, notify your dealer im-
mediately. If your unit was shipped to you directly, notify the
shipping company without delay. Only the consignee (the
person or company receiving the unit) can file a claim against
the carrier for shipping damage.
We recommend that you retain the original carton and pack-
ing materials for use should you transport or ship the unit in
the future.
Before operation
Safety precautions
Never remove the case. If the internal parts are touched
accidentally, a serious electric shock might occur.
Never touch internal
parts.
If a metal object, such as a hair pin or a needle, comes
into contact with the power socket on the rear panel, a
dangerous electric shock may result. For families with
children, never permit children to put anything,
especially metal, inside this unit.
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vs <a)
Do not connect other audio equipment with a power
consumption larger than that specified to the AC outlet
on the rear panel. Never connect other electrical ap-
pliances, such as an iron or toaster.
~ Never connect other
electrical appliances.
Touching the power plug when your hands are wet
may result in a serious electric shock.
‘“ “7
LAS
S uy Never touch with wet
: hands.
66
Never pull, bend or extend the power cord. This could
damage the power cord, resulting in a broken cord or
short-circuit.
%
~
Never pull or stretch
the cord.
”
In case of abnormal smell
If an abnormal smell or smoke is detected, immediately
turn the power OFF and pull out the power cord. Con-
tact your dealer or nearest service station.
6%
(ee
Do not use volatile solvents such as alcohol, paint thin-
ner, gasoline, benzine, etc. to clean the cabinet. Use a
silicone cloth or a clean dry cloth.
—
Silicone cloth Thinner Benzine
Installation precautions
a) Avoid locations subject to direct sunlight.
b) Avoid high or low temperature extremes.
c) Keep the unit away from heat radiating sources.
d) Choose a location that is relatively free of vibration
or excessive dust.
e) Make sure power is off before making any system
connections.
PRINTED IN JAPAN B50-5704-00 (K,P,U,UE) (T)
§6789101112/85 123456789101112/86 \

Before applying power
Important!
U.S.A., Canada, and Europe
Units shipped to the U.S.A. and Canada are
designed for operation on 120 volts AC only.
Units shipped to European countries are designed
for operation on 220 volts AC only. These units
are not equipped with an AC voltage selector
switch and the discussion of such a switch that
follows should be disregarded.
All other countries
Units shipped to countries other than the U.S.A.,
Canada, and Europe are equipped with an AC
voltage selector switch on the bottom plate. Refer
to the following paragraph for the proper setting
of this switch.
AC voltage selection
This unit operates on 110 - 120 volts or 220 - 240
volts AC. The AC voltage selector switch on the bottom
plate is set to the voltage that prevails in the area to
which the unit is shipped. Before connecting the power
cord to your AC outlet, make sure that the setting posi-
tion of this switch matches your line voltage. If not, it
must be set to your voltage in accordance with the
following direction.
Note:
Our warranty does not cover damage caused by excessive line
voltage due to improper setting of the AC voltage selector switch.
Safety precaution for AC plug (For Canada)
CAUTION: TO PREVENT ELECTRIC SHOCK
DO NOT USE THIS (POLARIZED) PLUG WITH
AN EXTENSION CORD, RECEPTACLE OR
OTHER OUTLET UNLESS THE BLADES CAN
BE FULLY INSERTED TO PREVENT BLADE
EXPOSURE.
Rear panel safety precautions
“
AC
110-120V~<»
AC
220-240V~
AC
110-120V~<p
AC
220-240V~
Switch lever
oS
This shows switch
lever locked in the
110 — 120 V~ posi-
tion.
This shows switch
lever locked in the
220 — 240 V~ posi-
tion.
Move switch lever to match your line
voltage with a small screwdriver or other
pointed tool.
AC voltage selector switch
WARNING:
TO PREVENT FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE.
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.
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.
2 KVR-AQOR/KVB-A7ORIKR-A70 (K}
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
literature accompanying the appliance.

System connections
— KVR-AQOR system connections —
CD player
AM outdoor
antenna
FM indoor FM outdoor
antenna antenna
AM loop antenna
KVR-A9OR
>
TV moniter
Speaker system A
Right Left
BEE
Lswitcneo TOTAL 200w Max =|
AUDIO
OUT
AUDIO IN eal | Ve°
VIDEO IN QUPRRRLE out
L
— a a ae TV moniter
VTR (VCR)
AUN AUDIO OUT
VIDEO IN FLIPRRELE VIDEO OUT
—s
calle f= eee f=——s]
Tape deck 1 VTR (VCR)
Right Left
Speaker system B
)
KVR-AQOR/KVR-A7OR/KR-A70 (kK) 3

—
KVR-A7OR
system
connections
(USA
and
Canada
model)
—
CD player TV moniter
FM indoor FM outdoor AM outdoor
antenna antenna antenna
Speaker system A
Right Left
KVR-A70OR
Left
Speaker system B
TV moniter
VFR (VCR)
aus AUDIO OUT
VIDEO IN LIER REILE VIDEO OUT
ied | bal
ee ee ——
VTR (VCR)
4 KVR-AQOR/KVR-A7OR/KR-A70 {K)

— KVR-A7OR system connections (European model) —
CD player TV moniter
a ess
FM
indoor
FM
outdoor
AM
outdoor
antenna
—
antenna antenna
fe]
Speaker system A
Right Left
+lh- H+
connector
KVR-A70R
-]i+
Ea
. Etttt
Tape deck 2 Right Left
Speaker system B
vineo in FU PRRHLE our
Sj TV moniter
‘VTR (VCR)
R eerie al ok AUDIO OUT
LINE OUT
OT oe | SS! LS
2s F-
—
Tape deck 1 ~-VTR (VCR)
KVR-ASOR/KVR-AZOR/KR-A70 (K) 5

— KR-A70 system connections —
FM indoor FM outdoor AM outdoor
antenna antenna antenna
Speaker system A
Right Left
AM loop antenna
KR-A70
weg
cm Prdbsd pond
Right Left
L Speaker system B
AUDIO OUT
VTR (VCR)
6 kvr-Ag0R/KVR-A7OR/KR-A7O (K)

Speakers
This unit has two pairs of speaker terminals, SPEAKERS
A and SPEAKERS B.
Connecting one speaker system
Connect speakers rated at 4 ohms or more to the
SPEAKERS A terminals.
Connecting two speaker systems
To connect an additional pair of speakers, use the B ter-
minals. In this case, each speaker must be rated at
8 ohms or more.
Connection with speaker cords
1. Connect the left speaker to the [L] SPEAKERS ter-
minals and the right speaker to the [R] SPEAKERS
terminals.
2. Be careful that wires do not contact adjacent ter-
minals.
3. Be sure to connect the (+) terminal of the speaker to
the (+) terminal of the unit.
Never short the (+) and (—) terminals.
Erroneous connection of speakers may result in poor
imaging or unnatural sound.
10mm
Remove insulation
aw
from
lead
tip.
‘BB
Insert the wire and
return the lever.
Twist wire tightly,
and solder.
The wire is
now locked.
Press the lever.
Speaker lead connection
Turntable
The PHONO jacks of the unit can accept a turntable
with an MM type phono-cartridge (The KVR-AQOR can
be connected to either type of turntable; one using MM
cartridge or one using MC cartridge).
Your stereo turntable has a pair of audio cables that is
terminated with phono plugs. Plug the left channel plug
into the and the right channel plug into the [Rl
PHONO jacks.
if the turntable has a ground wire, connect it to the
unit’s GND terminal to avoid hum.
CD/AUX
To these jacks, high-level signal sources such as, CD
player, tuner, extra tape decks, TV, VTR sound out-
puts, etc. can be connected.
Ground
For maximum safety and minimum interference con-
nect the GND terminal to a good earth ground if prac-
ticable. A good earth ground is a cold water pipe or a
metal stake driven into moist earth. However, never
use a gas pipe for this purpose.
Tape decks
If only one tape deck is to be connected to the system it
is recommended that it be connected to the jacks mark-
ed TAPE 2. (If your tape deck is equippied with a 3
head system, the simultaneous monitoring can be
possible.)
Tape deck input and output cables are normally ter-
minated with phono plugs.
Playback
Plug the left and right output cables of the tape deck in-
to the [L] and [R] TAPE 2 PLAY jacks.
Record
Plug the left and right input cables of the tape deck into
the [0] and [R] TAPE 2 REC jacks.
Second tape deck
Plug the input and output cables from the second tape
deck into the REC and PLAY jacks marked TAPE 1.
VCR (VIDEO/AUDIO) jacks (except KR-A70)
Two video recorders can be connected to the VCR A
and VCR B jacks.
Connect the unit’s VIDEO PLAY jack to the video
recorder’s video output terminal, the VIDEO REC jack
to the video input terminal, the AUDIO PLAY IL] jack to
the left audio output terminal, AUDIO PLAY [RI jack to
the right audio output terminal, AUDIO REC [L] jack to
the left audio input terminal, and the AUDIO REC [F}
jack to the right audio input terminal. (Video recorder
with monaural audio should be connected to one of the
VCR A jacks. After connecting it to the [[] or [R] AUDIO
jack of the VCR A jacks, set the MONO/STEREO switch
to ‘‘MONO’’.)
MONO/STEREO switch (except KR-A70)
This switch affects only the VCR A jacks. Set the switch
according to the stereo or monaural audio output mode
of the video recorder connected to the VCR A jacks.
VCR AUDIO jacks (except KVR-A9OR and
KVR-A7OR)
Connect these jacks to the audio output terminals of a
video recorder. Connect the VCR AUDIO [E] jack to the
left audio output terminal and VCR AUDIO [RI jack to
the right audio output terminal. (Never connect these
jacks to the video output of the video recorder.)
To these jacks, high-level signal sources such as, CD
player, tuner, extra tape decks, TV, VTR sound out-
puts, etc. can be connected.
MONITOR OUT jacks (except KR-A70)
Two video monitors can be connected to the MONITOR
OUT A and MONITOR OUT 8B jacks. (The video
monitors or TVs should be equipped with video input
terminals.)
Connect the MONITOR OUT A or B jack to the video in-
put terminal of each video monitor.
KVR-AQOR/KVR-A7OR/KR-A70 (K) 7

SYNCHRO CONTROL terminal (except KR-A70)
When the KD-74F/KD-64F (turntable), KX-74R (tape
deck) or DP-840 (CD player) are used in connection
with the receiver, they can be operated from the
remote control unit of the receiver when their synchro
terminals are connected to the SYNCHRO CONTROL
terminals. (Ordinary audio cable connections are also
required.) For details, refer to the operating instructions
for the remote contro! unit on page 16.
AM antennas
AM loop antenna
Tune in your favorite AM station and position the loop
antenna for best reception. Try other stations and find
the position that gives best overall reception. When this
unit is mounted in a rack or placed on a shelf with insuf-
ficient space behind, remove the loop antenna and
hang it from a wall in the direction which gives best
reception.
If the length of the lead wire is too short, add a lead
wire of an appropriate length.
Note:
If beat noise occurs during AM reception, remove the AM loop anten-
na from the unit.
Remove from the unit
and hang it from a wall.
Detachable
Vary the direction of
the loop antenna.
AM loop antenna setting
AM outdoor antenna
In steel buildings or at a great distance from the
transmitter, it may be necessary to install an outside
long wire antenna. The end of this wire should be strip-
ped of insulation and connected to the AM terminal. At
this time, keep the loop antenna connected.
FM antennas
Your unit approaches the thereotical limit in FM sen-
Sitivity. However, the performance of your system is
determined to a very large extent upon the signal condi-
tions where the antenna is placed. The reason is that
FM broadcast signals travel in straight paths. Therefore
they can be blocked by natural or man-made obstruc-
tions such as mountains, hills, or buildings. At large
distances from the transmitter the curvature of the
earth acts as a screen between transmitter and
receiver.
Consider the signal conditions in planning your installa-
tion. If you live in or near an urban area the indoor
antenna (supplied) may serve your needs adequately.
B KVR-A9OR/KVR-A7OR/KR-A70 (K)
However, if favorite stations are weak due to natural
obstructions, or if you live in a building which is made
of steel-reinforced concrete (which acts as a shield) it
may be necessary to install a good outdoor antenna.
FM outdoor antenna
Consult with your dealer or service man about the best
method of selecting and erecting an outdoor FM anten-
na.
The choice of lead-in (feeder) wire is also important.
The flat ribbon-shaped twin lead performs well elec-
trically, is cheaper and is somewhat easier to handle in
routing through windows and around rooms. Coaxial
cable is more expensive, does a much better job of
minimizing interference, is less prone to the effects of
weather and close-by metal objects, and is nearly as
good a signal conductor as the ribbon type wire. The
latter is particularly true of foam-type coaxial cables.
Coaxial cable is somewhat more difficult to install at the
point where the cable enters the building. if coaxial
cable is selected, make sure the antenna is designed to
drive that type of cable.
Noise reduced if the
antenna is installed in a
higher position or on
the opposite side of the
building.
FM outdoor antenna setting
FM indoor antenna
Connect the T-shaped indoor antenna (supplied) to the
300 2 FM ANTENNA terminals as shown in the system
connections diagram. Spread the two arms that form
the top of the ‘‘T’’ horizontally and hold them against
convenient wall surfaces. Try several locations for best
results on your favorite stations. Tape the antenna in
place where the best compromise is found between
listening results and appearance.
FM DE-EMPHASIS switch (Except some areas)
This switch has been set to the correct position for a
given market area. However. check to see that this
switch is set correctly before operating your unit. An in-
correct setting will adversely affect high-frequency per-
formance.
Europe, Oceania and South Africa.................... 50 ps
Other countries ............ 0.2.0. ccee eee esecnee ee eeeen anes 75 ps

AM/FM CHANNEL SPACE switch (Except some
areas)
The CHANNEL SPACE switch on the rear panel is set to
the correct setting that prevails in the area to which the
unit is shipped. However, if the channel space setting is
not matched to the area where the unit is to be used;
for instance, when you moved from area 1 to area 2 or
vice versa, desired reception of AM/FM broadcasts is
not expected. In this case, change the CHANNEL
SPACE setting in accordance with the area correspon-
ding to the table shown below.
Channel Space Frq.
1. U.S.A., Canada FM: 100 kHz
Hawaii, and Guam AM: 10 kHz
2. European countries FM: 50 kHz
Far East countries AM: 9 kHz
Channel space table
Note:——_—$
When changing the setting of the AM/FM CHANNEL SPACE switch,
turn the POWER switch OFF and ON.
AC outlets
The AC outlets on the rear panel of the unit may be us-
ed to supply power to other components in the system,
such as turntables, tape decks, etc. Never connect
equipment whose power consumption exceeds the
maximum value shown at each outlet.
KVR-A9OR/KVR-A7OR (U.S.A., and
Canadian models)
SWITCHED outlets: This outlet supply power only
when the unit is turned on. The maximum total capaci-
ty is 200 watts.
KVR-A7OR (European model)
SWITCHED outlet: This outlet supply power only
when the unit is turned on. The maximum capacity is
200 watts.
KR-A70 —_-——_____
SWITCHED outlets: These outlets supply power only
when the unit is turned on. The maximum total capaci-
ty (both outlets) is 200 watts.
UNSWITCHED outlet: The outlet provides power
when the unit is plugged into an active AC wall outlet,
regardless of the setting of the POWER switch. The
maximum capacity is 200 watts.
KVR-ASOR/KVR-A7OR/KR-A70 (k) 9

Controls, indicators and connectors
KVR-AQOR
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10 kva-AgoR/KVR-A7OR/KR-A70 (K)