Grundig R45 a Bedienungsanleitung Seite 14

Line Output
Socket LINE O is a low impedance/high
level output socket for making high quality
recordings on a tape recorder with a
corresponding line input socket.
possible to connect a mixer or reverbe-
ration unit to the Line output
back via the Monitor socket with
receiver being switched to Monitor
operation (MONITOR switch O set to top
position). The Line output socket can also
be used to feed another amplifier or
sound-to-light display.
Microphone Connection
The socket @ (see specifications
connection) will accept GRUNDIG
capacitor microphones, dynamic
microphones and high quality balanced
line studio microphones. The transformer
for balanced line microphones
and can be switched in and out with
O underneath the receiver (see label on
this place). By pulling and depressing
knob O MICRO the microphone input can
be switched — depending on the type of
microphone used — to stereo or mono.
Microphone and Mixing (MIX)
The operating functions are selected
control switch O
O Microphone and mixer switched off.
AUTOM = Automatic operation:
Eg: for making announcements-
discotheque operation. When talking into
the microphone the volume of the radio,
record, cassette or tape programme
automatically reduced during the
announcement. The volume of the
microphone announcement is adjusted
with control MICRO O
To avoid acoustic feedback (howling), we
recommend the microphone be used at a
reasonable distance from the loudspeaker,
or do not turn up the volume control
too far.
MIX Mixer operation:
The microphone signal can be mixed with
any other signal being fed into or out of
the receiver (radio programme, record, tape
or cassette). The mixed signal
be adjusted with control MICRO (for
microphone) and control MIX (for normal
programme). To avoid acoustic
especially if the mixed programme is being
recorded, the volume control should
be turned up too far.
14
MICRO Microphone operation only:
The microphone volume is adjusted with
control MICRO, the basic volume
volume control O. It iS also possible to
It is also
connect other signal
recorder, record
and play
crystal pick-up)
the
provided an appropriate
(see illustr. below).
Thus it is possible
programmes
unit. The controls
Mono/Stereo)
correspondingly.
for pin
Pin Connections
Adaptor for Signal
Phononape On Microphone
470kQ
is built-in
swit&l
470kQ
3
the
Socket for
Phono or
Tape cable
with
is
levels can
feedback,
not
with the
sources (tape/cassette
player with ceramic or
to the microphone socket,
adaptor is used
to mix any two
with the microphone mixer
(basic volume, level,
must be used
Of Cable
Source
Socket
Plug for
Connection
to micro-
phone input
Tedtnlcal Specification
General
Mains supply:
110. 130, 220. 240 V ACT60 Hz
Power consumption: approx. 230 W max..
no-load approx. W.
Fuses:
(Mains)
110/130V AC: 4 Amp. surge resisting
V AV; 2 Amp. surge resisting
(Secondary)
1 x rnA. surge resisting
1 x mA. surge resisting
1 x 63 mA. surge resisting
x 125 mA, surge resisting
Overload Protection
The Circuit has been designed so that it will
sense open and short circuit loading conditions.
It will also sense over capacitive Or over
inductive loads and the automatic overload
protection circuit will then operate. Thermal
protection devices have also been fitted
mains input transformer and onto the heatsinks
of the output transistors. These transistors
are therefore protected against destruction
overload and high operating temperatures. Should
a fault condition occur these overload protection
circuits will reset themselves when the
been cleared.
An electronic speaker protection circuit
destruction Of loudspeakers.
Radio Unit
Waveband Coverage:
FM: 87.5- 108 MHz
MW: - 1620 kHz
Sensitivities:
VHF/FM: I uV in 300 Q or 0.5 uV in 75 Q and
40 kHz deviation for dB noise.
Noise + Signal
MW Band 6. 15 pv
Noise
(modulation
Aerial Sockets:
FM: FM dipole 30012
AM: External Aerial and Earth
Circuits:
FM: 17 (3 variable. 1 fixed. 7 fixed IF. 4 Ceramic
filters, 1 trap 114 kHz)
AM: 8 (2 variable. 2 fixed IF. 4 ceramic filters)
Intermediate Frequencies:
FM: 10.7 MHz
AM:
to the
by
fault has
prevents
— 6 dB.
depth —30%)