Dual C 839 RC Notice D'emploi page 18

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.
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
Fast forward and reverse
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.
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
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