Kenwood KR-4070 Instruction Manual

- 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

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