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ensures simultaneous recording on tape and playback of the
sound recorded on the tape.
In this case recording on tape and playback of the recorded
sound are practised at the same time, and connection must
be made for both functions. Need to connect the Recording
Output Terminals(21)
to the Line Input Terminals (AUX
Input)
of tape-recorder,
and
the Tape
Monitor
Termi-
nals(22)
to the Output
Terminals
(LINE
OUT)
of the
tape-recorder. For connection the pin-jack lead is used.
Then if the Tape Monitor Switch(13) is set at the "source"
position, original sound is fed to the speakers and if at the
"monitor" position, recorded one is fed to the speakers. !t
makes possible to compare the original sound with recorded
one by changing position of the Tape Monitor Switch(13).
Thus possible recording error can be prevented in case of
3-head tape-recorder.
Incidentally note that reproduction
of recorded sound becomes a little bit delayed as compared
with that of original sound since there is a gap between
recording head and playback head. Simultaneous playback
monitoring can be made through the Tape Connector (23)
as well. A single piece of DIN cord ensures connection for
recording and playback, and simple operation of switching
"source"
and
"monitor"
of the
Monitor
Switch(13)
is
sufficient.
|
S About DIN Tape Connector
The Tape Connector(23) of this amplifier is of DIN norm.
As explained
in the paragraph
of 'Playback from Tape"
and ''Recording on Tape' if the tape-recorder is provided
with the DIN connector, connection for both playback and
recording is completed
by use' of single piece of DIN cord.
See to it that this connection is practised only by DIN cord
since the impedance at Recording Output Terminals (DIN)
is kept relatively high at 80kQ + 20ka.
OPERATION
OF TONE
CONTROLS
EZ Selection of Mode (Convertion of Playback Mode) |
This amplifier is for stereophonic playback and intergrates
independent
amplifiers
for 2 channels
(right and
left). —
Without
the Mode
Selector
the
signals fed to the left
channel terminal are reproduced at the left channel speaker.
The Mode Selector Switch (8) is placed between these 2
amplifiers to change the mode of reproduction.
connection
input output
selector
knob
performance
position
STEREO
NORMAL
STEREO
REVERSE
MONO L+R
for norma)
stereo
playback
left input to left output
and right input to right
output
when program
source is
reversely
connected
right and left
inputs are reversed
at outputs
for play-
back of
monaural
record with
stereo phono
pick-up
right and jeft inputs
are integrated
left input signai is
reproduced from both
right and left speakers
right input signal is
reproduced from both
_right
and left speakers _
for
monaurai
program
source
playback
PLAYBACK
OF AM/FM
BROADCASTING
PROGRAMME
Connection of the output terminals of AM/FM tuner to the
AUX terminal of this amplifier ensures playback of AM/FM
broadcasting programme. This amplifier is provided with 2
AUX
terminals (18) (19) and you may connect whichever
you like. The Input Selector Switch(1) must be set at the
corresponding position.
As shown in the block diagramme the input signals from
tuner are fed to the Tape Monitor Switch after selection at
the Input Selector Switch. Afterwards the signals trace the
same
blocks as explained
in the paragraph of ''Playback
from
Record
Disc', and are reproduced from the speaker
systems.
Both
for FM stereophonic and monaural
broad-
casting the Mode Selector Switch(8) of this amplifier can be
set at the "stereo" position, for such accommodation to the
input source can be made in the tuner.
In case
of AM
programme
there is possible trouble
of
modulation
hum, which
can be eliminated by varying the
distance and angle of these components.
OTHER
PLAYBACK
The signals of flat frequency response from such sources as
TV
receivers
do
not need
an
equalizer
stage,
and
for
playback
of such
audio equipments
any of these AUX
terminals
can be used. Connection
and
operation
is the
same with that of AM/FM broadcasting programme.
KEET
ap
a
aries
CHANNEL.
0s, 305M ieee
a
CHANNEL
Te
MODE
Teanono
L.
2.mono
R
3LIR
4.stereo
S.reverse
VQ
1
RIGHT
20
O2
RIGHT
Oo
30
am
O3
0
CHANNEL
'
CHANNEL.
4-0
Or4
50
O85
-® Control of Volume
Sound
volume
can be properly adjusted
by the Volume
Control(10). The variable resistor yields A type curve. In
the attenuation characteristics of A type turning angle is
proportionate
to attenuation
degree of dB, and the dB
value and the volume
audible to human
ears are in the
proportionate relation. That is to say, the rotation of knob
is in proportion to the sound volume felt by human ears.
The increasing degree of volume is felt quite natural as the
knob is turned on to the clockwise direction.
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