Kenwood KR-4070 Instruction Manual

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

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