Kenwood KR-4070 User manual
FM
STEREO
RECEIVER
KR-4070
gy
INSTRUCTION
MANUAL
the
sound
approach
to
quality
|
KENWOOD
To
INTRODUCTION
The
purpose
of
this
manual
is
to
acquaint
you
with
the
operating
features
of
your
new
receiver.
You
will
notice
that
in
every
detail
of
planning,
engineering,
styling,
operating
con-
venience,
and
adaptability,
we
have
sought
to
an-
ticipate
your
needs
and
desires.
We
suggest
that
you
read
this
manual
carefully.
Knowing
how
to
set
up
your
receiver,
to
the
best
advantage,
will
enhance
your
listening
pleasure
right
from
the
start.
You
will
also
become
aware
of
the
ease
with
which
you
can
adjust
your
receiver
to
meet
your
special
re-
quirements.
SERIAL
NUMBER
Record
your
SERIAL
NUMBER
on
the
spaces
designated
on
the
warranty
card.
You
will
find
the
serial
number
on
the
back
of
the
unit.
AFTER
UNPACKING
After
unpacking,
we
recommend
you
inspect
and
examine
the
unit
for
any
possible
shipping
damage.
If
your
unit
is
damaged
or
fails
to
operate,
notify
your
dealer
immediately.
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
you
retain
the
original
carton
and
packing
materials
to
prevent
any
damage
should
you
transport
or
ship
your
unit
in
the
future.
PRECAUTIONS
ON
INSTALLATION
a)
Avoid
locations
subject
to
direct
sunlight.
b)
Avoid
high
or
low
temperature
extremes.
c)
Keep
the
unit
away
from
heat
radiating
source
and
magnetism
generating
source.
d)
Choose
locations
with
as
little
vibration
and
dust
as
possible.
WARNING:
TO
PREVENT
FIRE
OR
SHOCK
HAZARD,
DO
NOT
EXPOSE
THIS
APPLIANCE
TO
RAIN
OR
MOIS-
TURE.
2
KR-40701K}
IMPORTANT!
1.
Units
shipped
to
U.S.A.
and
Canada
are
designed
to
operate
on
120
volts
AC
only
and
are
not
equipped
with
an
AC
Voltage
*
Selector
Switch.
Therefore,
the
following
©
:
description
on
sucha
switch
should
be
:
disregarded.
..
: :
‘
2.
Units
shipped
to
all
other
countries
are
Q
equipped
with
an
AC
Voltage
Selector
~
Switch
on
the
rear
panel.
The
following
;
description
on
this
switch,
“AC
Voltage
<
Selection”,
should
be
carefully
read.
;
AC
VOLTAGE
SELECTION
This
unit
operates
on
120
volts,
220
volts
or
240
volts
AC.
The
AC
Voltage
Selector
Switch
is
set
to
the
voltage
generally
available
in
the
country
where
the
unit
is
shipped.
It
is
important
to
make
sure,
before
connecting
the
power
cord
to
your
AC
outlet,
whether
the
setting
position
of
this
switch
corresponds
to
your
voltage.
If
not,
it
must
be
changed
to
the
proper
setting
in
accordance
with
the
direction
below.
NOTE:
Our
warranty
does
not
cover
damage
caused
by
excessive
line
voltage
due
to
improper
setting
of
the
AC
Voltage
Selector
Switch.
Stopper
plate
Screw
@
|
Lever
i)
i)
AC
120V~
C}
C)
Position
AC
220V~
Position
AC
240V~
Position
)
@
©
1.
Remove
screw
and
stopper
plate
2.
Slide
lever
to
your
line
voltage.
3.
Lock
lever
with
stopper
plate
and
screw.
AC
VOLTAGE
SELECTOR
SWITCH
5
CONTENTS
CONNECTING
INSTRUCTIONS
000...
cece
eeteeeteeetteeneees
6
OPERATING
INSTRUCTIONS...
cece
cet
eter
ttetereaeeens
10
POINTS
TO
BE
CHECKED
PRIOR
TO
SERVICING
........
eee
12
SPECIFICATIONS
ooo...
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ect
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te
tttettteetenas
12
FEATURES
Low
noise
cascade
junction
type
FET
and
frequency
linear
type
precision
3-ganged
var-
iable
capacitor
are
empioyed
in
the
FM
front
end.
These
are
followed
by
high
selective
IF
section
and
phase
locked
loop
system
IC
in
the
MPX
circuits.
These
highly
retiable
elements
will
give
you
stable
FM
reception.
.
AM
section
is
equipped
with
high
selectivity
ceramic
filter
and
high
performance
dual-in-
line
type
IC.
This
will
promise
you
optimum
reception.
Employs
large
size
of
signal
and
tuning
meters.
,
Employs
large
size
of
dial
stroke
of
10-5/8”
{270
mm).
Equipped
with
convenient
muting
circuit
which
automatically
silences
interstation
noise.
40
watts
per
channel,
minimum
RMS
at
8
ohms,
from
20
Hz
to
20
kHz
with
no
more
than
0.1%
total
harmonic
distortion.
7.
10.
11.
12.
13.
Power
amplifier
section
employs
differential
amplifier
with
high
stability
and
low
distortion
in
first
and
second
stages,
and,
di-
rect
coupled
circuit,
in
all
stages.
Adoption
of
the
Kenwood
ASO
(area
of
safe
operation)
detection
limiter
system
for
the
protection
circuit
which
protects
power
tran-
sistor.
Pre-amplifier
is
equipped
with
operational
IC
amplifier
of
single-in-line
type,
and
this
will
assure
you
low
noise,
low
distortion
and
increase
of
dynamic
range.
Devised
to
improve
stability
in
power
source
and
sound
quality
by
employing
two
electro-
lytic
capacitors
of
7500uF.
Decreased
wires
thanks
to
a
large-sized
printed
circuit
board.
Two
pairs
of
speakers
can
be
used.
Equipped
with
a
massive
heat
sink.
kR-4070(K)
3.
OUTDOOR
FM
ANTENNA
When
a
75
ohm
antenna
is
used
for
connecting
to
the
antenna
terminals,
the
300
ohm
terminals
should
not
be
used,
and
conversely.
INTERCONNECTING
DIAGRAM
752
coaxial
cable
T-TYPE
FM
ANTENNA
AM
FERRITE
BAR
ANTENNA
See
page
9.
y
Prono
“us
INPUT
——TAPE——
PLAY
REC/PLAY
REC
aR)
obi
TO
AM
OUTDOOR
ANTENNA
TURNTABLE
4
—
KR-4070(k)
OIN
cord
as
=.
7
fieees
attOe'
58
TAPE
DECK
TO
AC
OUTLET
Leh
Rch
Lch
Rech
SPEAKER
SYSTEMS
A
SPEAKER
SYSTEMS
B
CONTROLS
AND
THEIR
FUNCTIONS
@KENWOCIO
am-em
evened!
necever
(aria
=
Power
SPEAKER
®
POWER/PHONES/SPEAKERS
switch
A
combined
switch
for
power,
headphones
and
speaker
selection.
POWER
OFF........
Receiver
off.
PHONES
..............
Speakers
cut
off
(headphones
can
be
used).
POETS
To
listen
to
speakers
connected
to
the
SPEAKERS
A
terminals.
Ee
To
listen
to
speakers
connected
to
the
SPEAKERS
B
terminals.
AB
ie
To
listen
simultaneously
to
speakers
connected
to
the
A
and
B
SPEAKERS
terminals.
@
PHONES
jack
Insert
a
stereo
headphone
plug
into
this
jack
for
private
listening.
The
speakers
are
silenced
when
the
SPEAKERS
switch
is
set
to
PHONES
position.
@
BASS
and
TREBLE
controls
BASS
control
.......
Turning
it
clockwise
increases
low
fre-
quencies
and
counterclockwise
decreases
it.
TREBLE
control....
Turning
it
clockwise
increases
high
frequencies
and
counterclockwise
decreases
it.
@
BALANCE
control
This
contro}
adjusts
unequal
volume
from
any
program
source
in
right
and
left
channels.
The
left
channel
is
accentuated
when
this
control
is
turned
from
center
toward
the
left
side,
and
conversely.
@
VOLUME
control
This
control
adjusts
simultaneously
volumes
in
both
chan-
nels
{right
and
teft).
Set
it
to
your
own
most
satisfactory
listening
tevel.
©
LOUDNESS
switch
This
switch
boosts
bass
and
treble
tones
at
low
listening
levels.
Our
ears
have
less
sensitivity
to
low
and
high
frequencies
at
tow
listening
levels
and
this
switch
compensates
for
this
deficiency.
This
switch
should
be
off
when
listening
at
normal
and
high
levels.
@)
TAPE
switch
Depress
this
switch
when
using
a
tape
deck
for
tape
playback,
or
when
monitoring
a
tape
during
recording.
NOTE:
Except
for
tape
playback,
make
sure
it
is
in
the
“SOURCE”
position.
SELECTOR
switch
Switch
positions
and
functions
are
as
follows:
AM...
ee
To
receive
AM
broadcast.
AUTO/MUTING
...
To
receive
both
FM
mono
and
stereo
broadcasts.
Automatic
switching
operates
between
FM
mono
and
stereo
broadcast.
This
position
also
silences
the
interstation
noise
on
the
FM
band.
.
To
receive
FM
mono
broadcast.
.
To
operate
a
turntable
connected
to
the
PHONO
jacks.
To
select
source
connected
to
the
AUX
jacks.
@
TUNING
knob
Select
the
desired
AM
or
FM
station
while
observing
the
SIGNAL
and/or
TUNING
meters
for
optimum
tuning.
FM
STEREO
indicator
With
the
SELECTOR
switch
set
to
AUTO/MUTING
position.
the
STEREO
indicator
lights
during
an
FM
stereo
broadcast
reception.
However,
it
does
not
light
during
an
FM
mono
broadcast
reception.
@@
TUNING
meter
This
meter
is
used
for
precise
tuning
to
the
center
of
an
FM
channel.
Turn
the
tuning
knob
until
the
meter
pointer
is
in
the
center
of
the
meter
scale.
This
provides
maximum
separation
and
minimum
distortion.
()
SIGNAL
meter
This
meter
indicates
signal
strength
for
AM
and FM.
Maximum
deflection
indicates
best
receiving
condition.
KR-4070(K)
5
CONNECTING
SPEAKER
CONNECTION
In
connecting
only
one
pair
of
speakers,
con-
nect
the
right
speaker
to
[R]
and
the
left
speaker
to
[L|
of
the
SPEAKERS
A
terminals.
Should
(+)
or
(—)
of
either
right
or
left
channel
be
reversely
connected,
sounds
at
the
center
section
will
be
adversely
affected
by
the
lack
of
separation.
To
connect
an
additional
pair
of
speakers,
connect
the
right
speaker
to
[R]
and
the
left
speaker
to
of
the
SPEAKERS
B
terminals.
Sound
cannot
be
heard
when
the
SPEAK-
ERS
switch
on
the
front
panel
is
set
to
the
A+B
position
and
only
one
pair
of
speakers
(connected
to
either
SPEAKERS
A
terminals
or
B
ones)
are
used.
This
is
because
A
and
B
speaker
circuits
are
in
series
and
is
not
an
indication
of
any
trouble.
When
connecting
the
speaker
leads
to
the
speaker
terminals,
make
sure
that
the
bare
wires
at
the
tips
of
the
speaker
leads
do
not
touch
the
adjacent
terminal.
{t
is
recommended
that
the
wires
of
individual
speaker
lead
tips
are
soldered
or
they
are
stranded
together
to
eliminate
any
possibility
of
short-circuits
forming
in
the
speaker
connecting
network.
INSTRUCTIONS
——
10
rom
————
a
@_
Remove
insulation
from
lead
tip.
@
Strand
wire.
SPEAKER
LEAD
TIP
Insert
the
Loosen
the
screw
wire
Tighten
the
screw
NOTE:
The
impedance
of
each
speaker
should
be
4
ohms
or
more
when
only
one
pair
of
speakers
are
used
or
when
two
pairs
of
speakers
are
simultaneously
used
(A+B).
RIGHT
PHASING
OF
THE
SPEAKERS
Speaker
phasing
can
be
determined
in
the
following
manner:
1.
Set
the
SELECTOR
switch
to
FM
(MONO).
2.
Adjust
the
VOLUME
control
to
the
desired
listening
level.
3.
if
the
sound
comes
directly
from
the
front.
the
speakers
are
in
phase.
If
the
sound
comes
from
both
sides
and
there
is
a
noticeable
loss
in
low
frequencies,
the
speakers
are
out
of
phase.
In
this
case
reverse
the
leads
on
one
speaker.
Ey]
(Leet)
6
—
KR-4070{K)
CONNECTING
TURNTABLE
CONNECTION
The
two
shielded
audio
cables
from
your
stereo
turntable
are
normally
terminated
with
phono
plugs.
Connect
the
left
channel
of
the
turntable
to[L]
of
the
INPUT
PHONO
jack
and
the
right
channel
to
[R!
of
the
INPUT
PHONO
jack.
If
the
turntable
has
a
grounding
wire,
con-
nect
it
to
this
unit's
GND
terminal
to
avoid
hum.
TAPE
DECK
CONNECTION
Recording
A
tape
deck
can
be
connected
for
recording
as
follows:
the
left
channel
input
of
the
tape
deck
to
of
the
TAPE
REC
jack,
the
right
channel
input
of
the
tape
deck
to
[R]
of
the
TAPE
REC
jack.
Playback
A
tape
deck
can
be
connected
for
playback
as
follows:
the
left
channel
output
of
the
tape
deck
to
of
the
TAPE
PLAY
jack,
the
right
channel
output
of
the
tape
deck
to
[R?
of
the
TAPE
PLAY
jack.
‘
DIN
CONNECTOR
(REC/PLAY
CONNECTOR)
if
your
tape
deck
is
equipped
with
a
DIN
connector,
connect
it
to
the
TAPE
REC/PLAY
connector
with
a
DIN
connecting
cord.
A
DIN
connector
enables
recording
and
playback
with
this
single
cord.
NOTES:
1)
Please
note
that
the
REC/PLAY
connector
corresponds
to
the
TAPE
REC
and
PLAY
—
the
signal
must
be
con-
trolled
with
TAPE
switch
on
the
front
panel.
,
2)
When
a
DIN
cord
is
used
for
connecting
to
the
tape
deck,
the
PLAY
and
REC
jacks
should
not
be
used.
AUX
(AUXILIARY
INPUTS)
High
level
AUX
input
jacks
are
for
mis-
cellaneous
sources,
such
as
extra
tape
decks,
TV
sound
outputs,
and
other
external
components.
INSTRUCTIONS
TURNTABLE
GND
(CINPUT
PHONO
=
AUX
Ground
wire
TAPE
DECK
AC
OUTLETS
The
AC
outlets
on
the
rear
panel
of
the
receiver
may
be
used
to
supply
power
to
other
components,
such
as
a
turntable,
tape
deck,
etc.
1.
SWITCHED
outlet
This
outlet
is
controlled
by
the
POWER
switch
on
the
front
panel.
(The
capacity
is
200
watts
maximum.)
2.
UNSWITCHED
outlet
This
outlet
delivers
power
at
all
times.
(The
capacity
is
200
watts
maximum.)
NOTES:
1}
Units
shipped
to
the
European
countries
are
not
equipped
with
the
AC
OUTLETS.
2)
Do
not
connect
any
equipment
whose
power
consump-
tion
exceeds
the
capacity
of
each
outlet.
KR-4070{K)
7
CONNECTING
FM
ANTENNA
CONNECTIONS
Since
FM
broadcast
signals
travel
along
a
straight
and
direct-line
path,
they
become
rather
weak
behind
hills
and
buildings
even
in
the
vicinity
of
a
transmitting
station.
FM
signals
also
become
weak
in
areas
distant
from
a
station
even
though
there
may
not
be
any
obstruction
to
the
direct-line
path
of
the
signal.
Therefore,
a
good
FM
antenna
should
be
installed
in
the
most
effective
manner
for
the
best
possible
FM
reception.
FM
Outdoor
Antenna
In
areas
at
a
greater
distance
from
the
transmitting
station,
the
use
of an
outdoor
antenna
is
highly
recommended.
It
is
available
in
various
types.
For
reception
of
stations
located
in
many
directions,
a
non-directional
type
antenna
will
offer
better
results.
When
using
a
directional
antenna,
always
orient
it
for
the
best
reception
of
the
desired
station.
The
correct
position
will
be
indicated
by
maximum
deflection
of
the
SIGNAL
meter
on
the
unit.
Connections
should
be
made
as
indicated
by
figures.
Keep
FM
antennas
away
from
roads
to
avoid
noises
made
by
the
ignition
of
car,
motorcycle,
etc.
NOTE;
Consult
audio
dealer
for
detailed
information
of
FM
outdoor
antenna
installation.
T-type
Antenna
In
areas
close
to
the
transmitting
station,
a
simple
T-type
antenna
may
suffice.
It
should
be
remembered,
however,
that
the
pickup
of
reflections
(similar
to
“ghosts”
on
TV)
will
result
in
poor
stereo
reception.
These
reflections
must
therefore
be
reduced
to
a
minimum,
either
by
careful
orientation
of
the
indoor
T-type
antenna
or,
if
this
will
not
eliminate
them,
by
using
a
more
directional
outdoor
type
antenna.
Spread
the
2
arms
of
the
antenna
horizontal-
ly
and
while
listening
to
an
FM
station,
position
them
for
the
best
reception.
The
antenna
can
then
be
taped
to
a
wall
or
ceiling.
8
—
kR-4070(K)
INSTRUCTIONS
752,
coaxial
cable
NTENNAY
ANTENNA
FM
seen
|
zg
t
----+-6
©
GND
AM
XN
-
CONNECTING
AM
ANTENNA
CONNECTION
Normally,
position
the
ferrite
bar
antenna
for
best
reception
while
listening
to
an
AM
station
as
described
on
page
10.
AM
Indoor
Antenna
The
ferrite
bar
antenna
employed
on
the
rear
panel
assures
optimum
AM
reception.
AM
Outdoor
Antenna
In
fringe
areas
or
in
locations
surrounded
by
steel
frame
buildings
where
satisfactory
reception
cannot
be
obtained
with
the
ferrite
bar
antenna,
an
AM
outdoor
antenna
should
be
connected
to
the
AM
terminal.
GROUND
It
is
advisable
to
connect
the
GND
terminal
on
the
rear
panei
to
the
ground
by
using
a
buried
grounding
rod
or
iron-made
water
pipe
to
reduce
the
noise
and
ensure
safety.
However,
never
use
a
gas
pipe
for
this
purpose.
DIN-TYPE
ANTENNA
JACKS
Units
shipped
to
European
countries
are
equipped
with
the
DIN-type
antenna
jacks
on
the
rear
panel.
NOTE:
Consult
audio
dealer
for
detailed
information
on
making
con-
nections.
INSTRUCTIONS
Keep
the
AM
ferrite
bar
antenna
away
from
the
rear
panel.
AM
ANTENNA
SETTING
ANTENNA
GND
Ground
wire
ROUND
TO
OUTDOOR
AM
ANTENNA
To
KR-4070
DIN-type
feeder
antenna
jacks
separator
coaxial
cable
To
DIN
antenna
outlet
DIN-TYPE
ANTENNA
CONNECTOR
PRECAUTIONS
FOR
SAFETY
@
Switch
off
the
unit
and
disconnect
the
power
plug
from
your
AC
outlet
immediately
if
the
abnormality
(smell,
smoke,
etc.)
should
take
place.
@
When
you
connect
or
disconnect
the
power
plug
from
your
AC
outlet,
never
do
it
with
wet
hands
to
avoid
unexpected
accident
from
electric
shock.
Besides.
do
it
by
holding
the
power
plug
itself.
@
Disconnect
the
power
plug
from
your
AC
outlet
when
it
begins
to
thunder
terrifically.
Aliso.
it
is
safe
to
disconnect
the
antenna
feeder
{or
coaxial
cable)
from
the
unit
if
an
outdoor
antenna
is
installed.
Do
not
touch
the
antenna
feeder
{or
coaxial
cable)
discon-
nected
then.
@
It
is
desirable
to
disconnect
the
power
plug
from
your
AC
outlet
when
you
leave
your
house
for
a
long
time.
@
The
power
cord
must
not
be
pulled
strongly.
nor
bent
@
Do
not
put
a
heavy
thing
on
the
power
cord.
@
Do
not
put
on
and
near
the
unit
what
contains
water
@
Do
not
put
in
the
unit
the
inflammable
(paper,
cellu-
@
Never
dismantte
the
case
from
the
unit
and
touch
the
*
*
*
forcibly,
nor
scratched,
nor
extended
by
connecting
an
extra
cord.
This
will
damage
the
cord
and
be
a
cause
of
electric
shock
and
a
fire.
* *
*
(vase.
etc.).
loid,
etc.)
and
the
metal
(needle.
hairpin,
coin,
etc.).
* * *
internal
part.
Never
modify
the
internal
part.
Otherwise,
the
danger
of
electric
shock
will
be
in-
curred.
KR-4070iK)
9
OPERATING
INSTRUCTIONS
Prior
to
turning
on
the
unit,
set
each
control
and
switch
as
below.
e
TAPE
“SOURCE”
e
LOUDNESS
“OFF”
e
VOLUME
“MIN”
e
BALANCE
Center
Position
e
TREBLE
Center
Position
e
BASS
Center
Position
accordance
with
the
item
to
be
operated.
Next,
turn
on
the
unit
and
set
the
SPEAKERS
switch
to
“PHONES”,
“A”,
“B”
or
“A+B”
in
FM
RECEPTION
1.
Set
the
SELECTOR
switch
to
FM
AUTO
MUTING.
2.
Turn
the
TUNING
knob
to
select
your
sta-
tion.
Best
reception
is
obtained
when
the
TUNING
meter
pointer
is
exactly
in
the
center
and
the
SIGNAL
meter
pointer
deflects
to
the
extreme
right.
TUNING
FM
Reception
3.
Adjust
volume
and
tone
quality.
°
NOTE:
It
may
be
impossible
to
eliminate
noise
from
an
FM
stereo
broadcast
if
the
signal
is
extremely
weak.
In
such
a
case
the
relative
signal
strength
can
be
improved
by
setting
the
SELECTOR
switch
to
FM
MONO.
While
the
stereo
effect
will
be
lost,
a
great
deal
of
the
noise
can
be
substantially
eliminated.
10
=
KR-40701K)
AM
RECEPTION
=
Set
the
SELECTOR
switch
to
AM.
2.
Turn
the
TUNING
knob
to
select
your
sta-
tion.
Best
reception
is
obtained
when
the
SIGNAL
meter
pointer
deflects
to
the
ex-
treme
right.
AM
Reception
3.
Adjust
volume
and
tone
quality.
TURNTABLE
OPERATION
1.
Set
the
SELECTOR
switch
to
PHONO.
2.
Operate
the
turntable.
3.
Adjust
volume
and
tone
quality.
AUX
JACKS
UTILIZATION
To
play
component
connected
to.
the
AUX
jacks,
proceed
as
follows:
1.
Set
the
SELECTOR
switch
to
AUX.
2.
Operate
the
component
connected.
3.
Adjust
volume
and
tone
quality.
OPERATING
TAPE
DECK
OPERATION
Playback
1.
Set
the
TAPE
switch
to
PLAY
(depressed
position).
The
SELECTOR
switch
can
be
in
any
position.
2.
Operate
the
tape
deck.
3.
Adjust
volume
and
tone
quality.
Monitoring
lf
you
use
the
unit
with
3-head
type tape
decks,
you
can
check
the
sound
quality
of
the
recording
by
momentarily
comparing
the
recorded
signal
with
the
source
signal
as
follows.
e
Set
the
TAPE
switch
to
PLAY
to
monitor
the
recorded
sound.
e
Set
the
TAPE
switch
to
SOURCE
to
monitor
the
source
signal
before
recorded.
Recording
1.
Set
the
SELECTOR
switch
to
the
source
to
be
recorded
as
shown
in
the
figure
(right
middie).
2.
Operate
the
selected
source
(component)
and
the
tape
deck.
3.
Adjust
recording
levels
with
the
tape
deck’s
control.
4.
To
check
recording
conditions,
set
the
TAPE
switch
to
PLAY
(depressed
position).
NOTE:
Recording
is
not
affected
by
the
unit's
controls
such
as
VOLUME,
BASS,
TREBLE,
LOUDNESS
and
BALANCE.
Tape-To-Tape
Dubbing
(Duplicating)
1.
Connect
two
tape
decks
as
shown
in
the
figure
{right
bottom).
2.
Set
the
SELECTOR
switch
to
AUX
and
operate
the
tape
deck
connected
to
the
AUX
jacks
as
the
program
source.
3.
Record
the
program
onto
the
tape
deck
con-
nected
to
the
TAPE
jacks,
controlling
the
recording
jevel
with
the
controls
on
that
deck.
4.
To
check
recording
conditions,
set
the
TAPE
switch
to
PLAY
(depressed
position).
INSTRUCTIONS
TAPE
DECK
SELECTOR
TAPE
SWITCH
iq
SWITCH
PLAYBACK
TAPE
DECK
AUX!
REC
|
a
PLAY
SELECTOR
TAPE
SWITCH
|
SWITCH
RECORDING
TAPE
DECK
(for
playback)
TAPE
DECK
(for
recording)
TAPE
SWITCH
iq
TAPE-TO-TAPE
DUBBING
PRECAUTIONS
ON
CLEANING
Do
not
use
volatile
liquid
such
as
alcohol,
thinner,
gas-
oline.
benzine.
etc.,
when
cleaning
the
unit
surface.
Use
silicon
cloth
or
soft
dry
cloth.
KR-4070(K)
11
POINTS
TO
BE
CHECKED
PRIOR
TO
SERVICING
Occurs
Only
During
AM
Reception
|
Correction
Continuous
low
frequency
buzz.
Most
noticeable
at
night
on
weak
signal
stations.
Continuous
high
frequency
whine
increases
at
night.
i
Erecting
a
10-meter
outdoor
antenna
and
securing
good
ground
conditions
should
reduce
|
interference
considerably.
Complete
elimination
is
difficult.
Turn
TV
off.
receiver
side
(Neighboring
TV
set
may
also
be
cause.)
Impossible
to
eliminate
from
Occurs
Only
During
FM
Reception
Correction
Continuous
hiss
or
buzzing
interference
with
broadcast.
Becomes
louder
during
stereo.
Erect
outdoor
FM
antenna
if
only
indoor
T-type
is
used.
An
antenna
with
more
than
5
elements
is
necessary
if
you
are
located
at
a
considerable
distance
from
the
transmitting
station.
During
AM,
FM
or
Turntable
Correction
No
sound
from
LEFT
and
RIGHT.
Sound
only
from
one
side.
Check
connections
from
receiver
output
to
speakers.
Set
to
appropriate
volume
level
Always
set
to
SOURCE
except
when
using
tape
decks.
Check
receiver
output
and
speakers
connections.
During
Record
Playback
Only
Correction
No
sound
from
LEFT
and
RIGHT,
or
sound
only
from
one
side.
Sound
audible
but
background
hum
occurs.
Howling
noise
occurs
when
volume
is
raised
or
bass
response
is
increased.
See
that
turntable
output
cord
is
firmly
plugged
into
receiver
input.
Keep
turntable
output
cord
away
from
AC
cords.
Choose
cord
paths
which
keep
hum
ata
minimum.
Twist
LEFT-RIGHT
turntable
output
cords
together.
Reverse
turntable
AC
plug
connections.
Connect
turntable
groundwire
to
GND
terminal.
Increase
distance
between
turntable
and
speakers.
Choose
speaker
locations
carefully.
Remember,
loose
flooring
induces
howling.
AMPLIFIER
SECTION
SPECIFICATIONS
Signal
to
Noise
Ratio
at
65
dBt:
Power
Output
{Mono}:
72
0B
.
(Stereo):
67
dB
40
watts*
per
channel,
minimum
RMS
at
8
T.H.
Distortion
at
65
dBf:
ohms,
from
20
Hz
to
20,000
Hz
with
no
more
mone)
Ooese
than
0.1%
total
harmonic
distortion
Frequency Response:
20
to
15.000
Hz
+
0.5 dB.
—2.0
dB
Capture
Ratio:
1.0dB
Both
Channels
Driven:
40
+
40
watts
8
ohms
at
1.000
Hz
Alternate
Channel
Selectivity:
60 d8
47
+
47
watts
4
ohms
at
1,000
Hz
Spurious
Response
Ratio:
75 dB
Dynamic
Power
Output:
190
watts
4
ohms
Image
Response
Ratio:
45dB
Total
Harmonic
Distortion::
0.1%
at
rated
power
into
8
ohms
IF
Response
Ratio
(Balanced):
95
dB
0.05%
at
1
watt
into
8
ohms
AM
Suppression
Ratio:
53
dB
43
GB
at
1.000
Hz
.
35
dB
at
50
to
10,000
Hz
40
dB
300
ohms
balanced
and
75
ohms
unbalanced
88
MHz
to
108
MHz
Intermodulation
Distortion:
(60
Hz:
7
kHz
=
4:1)
Power
Bandwidth:
Damping
Factor:
40
at
8
ohms
Speaker
Impedance:
Accept
4
ohms
to
16
ohms
vity/Impedance/Signal
to
Noise
Ratio
(IHF
A
Curve):
2.5
mV/50k
ohms/73
dB
0.1%
at
rated
power
into
8
ohms
0.05%
at
1
watt
into
8
ohms
10
Hz
to
40,000
Hz
Stereo
Separation:
Sub
Carrier
Product
Ratio:
Antenna
Impedance:
FM
Frequency
Range:
AM
TUNER
SECTION
150
mV/45k
ohms/95
dB
Usable
Sensitivity:
16
Vv
Tape:
150
mV/45k
ohms/95
dB
Signal
to
Noise
Ratio:
50
dB
Maximum
Input
Level
for
image
Rejection:
50
dB
Phono:
190
mV
(rms),
T.H.0.
0.1%
at
1.000
Hz
Selectivity:
34 oB
Output
Level/Impedance:
Tape
REC
(Pin):
150
mV/100
ohms
GENERAL
—
'
{DIN):
30
mV/80k
ohms
Power
Consumption:
300
watts
at
full
power
Frequency Response:
A.C,
Outlet:
Switched
1,
Unswitched
1
Phono:
RIAA
standard
curve
+0.3
4B.
-0.3d8
Dimensions:
Wo
Be
eg)
AUX
and
Tape:
15
Hz
to
70,000
Hz
+0
dB,
—
1.0
dB
D
14-3716"
(360
mm}
Tone
Control:
48dB
at
100
Hz
Weight
(Net):
20.7
Ib
(9.4-kg)
Treble:
+8
dB
at
10,000
Hz
Loudness
Control
(—30dB):
+9
d8
at
100
Hz
+5
dB
at
10,000
Hz
FM
TUNER
SECTION
(IHF)
Usable
Sensitivity:
10.8
dBt
(1.9
nV)
Note:
50
dB
Quieting
Sensitivity:
. .
(Mono):
15
dBf
(3.1
pV)
Kenwood
follows
a
policy
of
continuous
advancements
in
development.
(Stereo):
37.2
dBf
(40
pV)
For
this
reason,
specifications
may
be
changed
without
notice.
*Measured
pursuant
to
Federal
Trade
Commission's
Trade
Regulation
rule
on
Power
Output
Claims
for
Amplifier
in
U.S.A
PRINTED
IN
JAPAN’
B50-1630-00
(KUMXWL)
(G)
N/i49
D12946/847
67890N/848
D12345/949
6789ON/950
D12345/051
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