FM
MUTING
SWITCH
When tuning
to
FM broadcasts
with
the FM MUT-
ING
Switch in its
"in"
position, the muting
circuit
will
eliminate
inter
-station noise. To prevent
muting
of
very weak stations along
with
the
noise, the
muting
function
may be turned
off
by
releasing the FM
MUTING
pushswitch
to
the
"out"
position.
VOLUME
This
control
regulates volume
of
all
four
channels
simultaneously.
DOLBY
SWITCH
This switch sets the
Dolby
noise-reduction
circuit
for
record or playback and also switches the
Meter Mode
from
AM or FM SIGNAL-STR ENGTH
to
DOLBY
CAL
LEVEL,
or vice-versa. With the
DOLBY
Switch placed in
"OFF"
position, the
Meter
will
be used as a
SIGNAL-STRENGTH
Meter; in all other positions,
as
a
DOLBY
CAL
LEVEL
METER.
DOLBY
FM: This position is used
for
listening
to
Dolbyized FM broadcasts. The
Dolby
FM
level has been pre-adjusted at the factory.
PLAY:
This position is used
to
play back a
Dolbyized source (except FM).
OFF:
With this position, the
Dolby
circuit
IS
by-passed and the
input
signals are
directly
applied
to
both TAPE
MONITOR
OUT
jacks
and amplifiers.
RECORD I: For making a Dolbyized recording
from
an in-coming
"flat"
(non-Dolbyized) signal.
When the
MONITOR
Switch is in the SOURCE
(out) position, the
"flat"
signal
will
be heard.
When the
MONITOR
Switch is in the TAPE (in)
position, the Dolbyized signal
from
the tape
will
be heard.
RECORD
II:
For making a
"flat"
(non-Dolbviz-
ed) record ing
from
an in-coming
Dolby
ized signal.
Regardless
of
the position
of
the
MONITOR
SWitch, a
"flat"
signal
will
be heard.
Refer to the
Dolby
Mode Chart on page 16.
RECORD
LEVEL
(L)
(R)
These knobs control the record level
of
the signals
to be recorded through the
Dolby
unit.
Adjust
the knobs so
that
the Level Meter pointers
of
the tape recorder do
not
exceed the OVU level.
PLAY
CAL.
(L)
(R)
These knobs adjust the playback
outputs
from
a
tape deck
to
the proper
Dolby
level.
400Hz
TONE
SWITCH
This is used
for
calibration
of
the record
input
level
of
the tape deck. When the switch is
depressed, the
built
-in oscillator operates and a
sine wave signal
output
of
580mV
will
be applied
to
the
four
TAPE MOI\IITOR
OUT
jacks.
10
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