Publicidad
Connecting to AC power line
The device can be connected to either 110 — 125 V AC or
220 — 240 V AC sources. When shipped from the factory, it is
set for 230 V operation. No special adapter is needed for 50 or
60 Hz operation.
Before connecting the unit to the power line, check to see that
it is set for the correct voltage.
A special fuse for use with
110 — 125 V AC supplies is included
as an accessory. This fuse must not be used for 230 V operation.
Warning!
For safety reasons, only your Dual dealer or other Dual service
personnel should perform the conversion to a different line vol-
tage. The loudspeaker should be connected before turning the
receiver on for the first time.
Electronic overload protection
In order to protect the output stages, the unit is fitted with an
electronic circuit breaker and thermal overload protection. The
electronic circuit breaker comes into effect in the event of in-
correct matching at the speaker output, e.g. when
using un-
suitable speakers, The unit turns itself off. Once the cause of
failure
(e.g.
mismatch)
has been
removed
it turns itself on
again.
In order to protect the power stage transistors against thermal
overload
as well, e.g. in the event of insufficient cooling, the
device has a termal sensor.
If the stage overheats the equipment
is automatically switched off, and after a short cooling down
period switches itself back on. The thermal circuit breakers also
prevent any failure of the power stages caused by a sustained
short circuit.
Antenna connection
For optimum
reception, we recommend operating the receiver
with a high quality outside antenna.
This is especially the case
for the reception of stereo programs, whose quality of repro-
duction is very dependent upon the quality of the FM antenna
used.
In many cases high quality stereo reception is only pos-
sible using a multielement antenna directed to the desired trans-
mitter.
Your dealer can help you to chose the antenna most
suitable for your needs.
The receiver also has a fold-out ferrite antenna which, however,
cannot match the performance of an AM outdoor antenna. It
can, however,
provide adequate
AM
reception
in many
cases
In order to improve reception we recommend that you fold it
out.
In those cases where no good outdoor antenna is available, we
recommend
using the antenna set included with the device.
This set contains
a FM room dipole and an AM wire antenna,
which provide adequate reception on all ranges in well-supplied
areas, at least of the local transmitters.
On the rear side of the receiver are four binding posts for con-
necting 240/300 Ohm FM dipoles and AM antennas.
The FM
antenna cable should be connected to the FM binding posts.
If, however, as it is often the case with community antennas, a
cable for the AM range is present then this should be connected
to the binding posts AM and GND. The antenna switch located
above the binding posts should be switched to FM.
Right next to these connections are a coax antenna jack and a
binding post for directly connecting 60/75 Ohm coax cables.
Coax cables offer the best protection against noise and ignition
interference. When connecting a 60/75 Ohm antenna, place the
antenna switch in the FM/AM position.
Interference
Continuous interference is rarely due to defective equipment,
but is usually introduced from outside via the antenna.
If such interference occurs please have your antenna checked
by a specialist to determine whether an improvement
of the
antenna
system
will
solve
your
interference
problem,
or
18
| ENGLISH.
Speaker connection
Important!
Connect speaker pair 1 to the terminals marked A. Connect
speaker pair 2 to the terminals marked
B. The speaker boxes
should
be connected
to the correct
terminals
(LEFT and
RIGHT) which indicate left and right viewed from the listening
position.
Speaker switches
The
HiFi receiver may have two pairs of speakers attached
The switches marked SPEAKERS
serve to switch off the pairs
(e.g. when using headphones) and to control which outputs are
active. In this way, speaker pairs in two separate rooms may be
attached.
Switch position A activates speaker pair 1 and switch
position B only speaker pair 2. Switch position A + B activates
both speaker pairs.
Headphones operation
The PHONES jack on the front panel of the set is for connecting,
headphones or earphones having 1/4 inch coaxial plugs. All
modern low and high impedance phones systems can be used.
With
the SPEAKERS
switch
turned OFF
output
is made to
the phones jack only
Connecting program sources
For the connection of a turntable, tape or cassette deck, and
other audio sources Cynch
(RCA)
jacks are located on the
rear of the unit.
DIN 41
524 standard jacks are additionally
provided for the inputs TAPE
1 and PHONO, These jacks are
connected in parallel with the corresponding Cynch jacks. The
desired input is selected by pressing the corresponding selection
button on the front panel.
PHONO
The DIN or Cynch jacks are used to connect a turntable with
a magnetic pick-up cartridge, When the turntable is fitted with
an audio cable with Cynch
plugs and a separate ground wire
(connecting wire + , Ground
(GND), this shall be connected to
the ground terminal GND.
TAPE
The HiFi-stereo receiver has input jacks for two tape or cassette
decks. The connection is made to the jacks TAPE
1 and TAPE 2
on the rear side. A five-pole DIN jack is switched in parallel to
the Cynch jacks for TAPE
1. When connecting a tape or cassette
Publicidad
