Dual C839RC - Advanced Features and Recording; Noise Reduction and Filtering; Recording Control Features; Counter and Memory Functions

Dolby Nr (00) + MPX-filter
The Dolby noise reduction system gives a lasting reduction of
inherent tape noise and thereby increases the dynamic range of
recording.
To play cassettes that have been recorded with Dolby systern
and which have the Dolby trademark DO, or Dolby zied recor-
dings
which
you
have
made
yourself
as
described
on
page
18,
press the switch marked OO -MPX (26). The built-in Dolby sy-
stem then works automatically and needs no special adjustment
when
used
in
conjunction
with
tapes
listed
on
the
page
3
or
their equivalents.
The level of the 400 Hz-Dolby-test cassette shows a level at the
LED BU-light bands (29) of approximately 0 dB.
The
Dolby
Nr
(00)
switch
is
coupled
with
the
MPX
filter;
this
means disturbing
high frequencies
during tape recording
of VHF
programs
is filtered
out.
Select the correct switch position in accordance with the follo-
wing table.
Switch | Dolby-Nr. | MPX-filter | Recording source
Top On On VHF radio
Center Off Off
Bottom On Off Records
On playing dolbyized recordings select the lower switch position.
Counter and memory device
The
index
counter
(18)
is
a
convenient
means
of
noting
and
quickly
locating
specific
spots
on
a
recorded
tape.
It
functions
during
recording,
playback
and
fast
winding
in
either
direction.
It
is
good
practice
to
set
the
index
counter
reset
(9)
at
the
be-
ginning
of
a
tape
and
then
you
can
note
the
counter
position
at
the
beginning
of
a
particular
section
and
subsequently
find
it
easily,
By
means
of
the
MEMORY
feature
(28),
which
works
in
combination
with
the
counter
(18),
you
can
find
a
predeter-
mined
position
on
the
tape
during
playback.
You
mark
this
position
in
that
you
press
the
reset
key
(9).
Should
you
now
want
to
find
the
position
at
any
other
position
on
the
tape
either
ahead
or
behind
the
desired
position,
press
one
of
the
keys
#4
(12)
or
»»
(15)
and
turn
the
MEMORY
switch
(28)
to
ON”.
This
will
cause
the
tape
to
stop
exactly
at
the
desired
position.
If
you
have
selected
the
position
PLAY,
the
device
will
start
to
playback
in
the
other
direction
once
the
desired
position
has
been
reached.
In
this
way,
a
particular
piece
can
be
played
over
and
over
again
without
having
to
press
the
start keys » (14) or 4 (11).
Fast forward and reverse
pp
(15)
fast
wind
from
left
—
right
<<
(12)
fast
wind
from
right
—
left
The functions “fast forward” pp and “fast reverse” «4 are used
to find particular points on the tape and for rewinding the tape.
These
two
keys
also
cancel
the
functions
start
and
REC.
In both directions the drive is turned off when the end of tape
has been reached.
Start
The record and playback are initiated in the respective tape
direction using the keys » (14) and « (11). The start key can be
pressed before inserting the cassette, a feeler will register the
inserted cassette and start the drive.
PAUSE
The PAUSE button (16) is used for preparing to record and to
stop for brief interruptions during recording or playback.
The function you have selected is maintained when the pause
button is pressed. Pressing the pause button a second time re-
turns the equipment to the pleceding mode of operation.
Auto-stop
The device is equipped with electronic tape monitoring, which
interrupts tape movement during functional disturbances (es-
pecially those which are caused by the cassette) and prevents
the notorious “tape salad’. Depending upon the position of
the MODE switch (2) the tape direction is first reversed, whereby
18
cassette take-up problems can often be cured. Should the dis-
turbance be also present in the other direction, tape play is
interrupted.
If
the
switch
is
in
EST
position,
the
tape
direction
will
be
con-
stantly
reversed
in the case of a malfunction.
Monitoring using headphones
The PHONES jack (31) may be used for stereo headphones
having an impedance of 4 — 2000 Ohm for monitoring re-
cording or playback.
The corresponding control (32) is used to adjust the volume
on both channels.
TIMER connection
Should the line cord be connected through a normal timer, the
start time for the device can be preset.
For this, press the POWER buten (1), place the timer switch
(25) to “PLAY”, insert the cassette with the take-up side on
the left and select the desired mode by means of the MODE-
switch (2). As soon asthe timer places the device on the power,
play will begin. Inthis way, a correspondingly prepared record-
ing can be started using a timer.
Prepare the recording as described below, and set the TIMER
switch (25) to the REC. position. A blocking feature prevents
selecting this function by mistake. The switch lever must there-
fore be pressed simultaneously right and to the upwards.
LIMITER
With the LIMITER key (23) pressed an automatic level limiting
device is switched on when recording. This is dependent on the
position of the level controls.
First of all set the recording level manually and then press the
LIMITERbutton (23). Use this function when there is a danger
that — despite careful level control setting — the level of loud
passages (e.g. in unknown pieces of music) could cause over-
modulation.
PITCH control
By means of the PITCH control (17) the tape speed and thus
the pitch can be varied by + 4 % during playback.
During recording, the correct speed is kept independent of the
setting of the PITCH control (17).
Making your own cassette recordings
Thanks
to
the
great
number
of
features
in
your
cassette
deck,
making your own cassette recordings should not cause you any
trouble. Privately made recordings (e.g. from records) are ge-
nerally of a better quality than the pre-recorded cassettes of the
same title.
In addition to the notes previously given for playback, the follo-
wing points should be observed when recording:
* Set the tape selection switch (22) according to the type of
tape being used.
* 00 (26) if necessary turn on the MPX filter
* Set the counter (18) to “000”.
Recording preparation and level setting
In the following sequence press the keys PAUSE (16), REC
(13)
and
one
of
the
start
keys
»
(14)
or
«(11).
The
REC
key
must be held down until the start key has been pressed. The
light
next
to
the
REC
key
(13)
shows
that
the
unit
is
ready
for
recording.
Using
the
input
selection
switch
(21)
choose
the
desired input source:
LINE/MIC Cynch and microphone input mixable
LINE Only Cynch input
MIC Microphone input only
DIN DIN input only
DIN/MIC DIN and microphone input mixable
The tape recording level is set using the control pairs INPUT
LIN/DIN (24) or INPUT MIC (27). Using the switch positions
LINE/MIC or DIN/MIC the microphone input can be mixed
with the other recording sources. The two stereo channels can
be controlled separately: using the friction coupling they can