Kenwood KR-4070 Instruction Manual

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
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GND AM
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Kenwood KR-4070 Specifications

Amplifier Section

signal to noise ratio at 65 dBf	67 dB
power output (mono)	72 dB
power output (stereo)	40 watts per channel, minimum RMS at 8 ohms, from 20 Hz to 20, 000 Hz with no more than 0.1% total harmonic distortion
frequency response	20 to 15, 000 Hz +0.5 dB, -2.0 dB
capture ratio	1.0 dB
both channels driven	40 + 40 watts 8 ohms at 1, 000 Hz
dynamic power output	190 watts 4 ohms
total harmonic distortion	0.1% at rated power into 8 ohms
intermodulation distortion	0.1% at rated power into 8 ohms
power bandwidth	10 Hz to 40, 000 Hz
damping factor	40 at 8 ohms
stereo separation	43 dB at 1, 000 Hz

General

power consumption	300 watts at full power
dimensions	360 mm
weight	20.7 lb (9.4 kg)

FM Tuner Section

usable sensitivity	10.8 dBf (1.9 nV)
50 dB quieting sensitivity (mono)	15 dBf (3.1 µV)
50 dB quieting sensitivity (stereo)	37.2 dBf (40 µV)

AM Tuner Section

usable sensitivity	16 µV
signal to noise ratio	50 dB
selectivity	34 dB