Monarch STA-400X User manual
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OR
FEATURES
:
A
Complete
Stereo
Center.
Broad
Band
Stereo
FM
Reception
(Drift
and
Static
Free)
—
FM-Stereo
Indicator
Neon
—
Special
Balance
Control
—
44
Watts
Stereo
Miasic
Power
—
AM
Loopstick
Antenna
—
Tape
In
and
Out
Jacks
—
Flywheel
Tuning
—
Heavy
Extrusion
Front
Plate
for
Console
Installation
—
Separate
AFC
Switch
—
30
db.
Separation
—
Bright
Easy
to
Read
Dial
Calibrations
—
High
Gain
Preamplifier
—
Individual
Bass
and
Treble
Control
—
Special
Loudness
Control
—
Stereo
Headphone
Jack
—
Tape
Monitor
Switch.
MONARCH
ELECTRONICS
INTERNATIONAL,
INC.
NORTH
HOLLYWOOD
CALIFORNIA
INSTALLATION:
Before
attempting
to
operate
the
Monarch
Model
STA-400X,
please
read
the
following
inst-
ructions
carefully.
Only
after
all
necessary
con-
nections
are
made,
should
the
power
(105/125
volts
—
50/60
cycles
only)
be
applied.
ANTENNA:
FM
ANTENNA:
Because
of
the
excellent
sensitivity
of
the
STA-400X,
an
ordinary
piece
of
wire
48
inches
in
length
will
act
as
a
suitable
FM
antenna
in
most
locations.
In
difficult
reception
areas
however.
it
is
recommended
that
an
outside
antenna
be
used.
When
using
the
outside
anten-
na,
connect
one
wire
to
“FM”
and
the
other
wire
to
“G”
at
the
antenna
input
located
on
the
rear
of
the
unit.
AM
ANTENNA:
As
a
precaution
against
shipping
darnage,
the
AM
ferrite
antenna
bar
has
been
designed
that
it
may
be
placed
in
a
vertical
or
horizontal
posi-
tion.
For
maximum
reception,
carefully
pull
the
antenna
bar
until
it
is
in
a
horizontal
position
to
the
chassis.
Note:
To
improve
AM
reception,
connect
a
length
of
wire
to
the
“AM”
antenna
terminal.
SPEAKER
CONNECTIONS:
For
maximum
sound
quality,
it
is
recommended
that
matched
speakers
be
used,
after
determin-
ing
the
correct
impedance
(4,
8,
or
16
ohms)
of
your
speakers.
Right
channel
—
connect
one
lead
to
“O”
and
the
remaining
lead
to
the
corresponding
4,
8,
or
16
ohms
terminal.
Left
channel
—
connect
one
lead
to
“O”
and
the
remaining
lead
to
the
XQ,
and
connect
im-
pedance
selector
tap
to
corresponding
4,
8,
or
16
ohms
terminal.
Note:
Both
speakers
must
be
connected
to
prevent
severe
damage
to
the
unit.
INPUT
CONNECTIONS:
“MAG”
INPUT:
Magnetic
pick-up
is
connected
to
this
terminal,
for
low
output
cartridge.
“X-TAL”
INPUT
Connect
the
output
from
a
high
impedance
cartridge
such
as
the
crystal
or
ceramic
type
pickup.
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1)
TUBE
&
DIODE
USED:
6AQ8-3,
6BA6-2,
GAU6-2,
6BE6-1,
12AX7-3,
12AU7-1,
6GW8-4,
6R-E13-1,
5AR4-1,
SD-46
(DIODE)-9
2)
TUNER
SECTION:
FREQUENCY
RANGE:
FM:
88—
108MC
AM:
535—1605
KC
SENSITIVITY;
FM:
2nV/100
MC
(S/N
20dB
QUIETING)
AM:
10uV/1
MC
(S/N
20dB
QUIETING)
FREQUENCY
RESPONSE:
FM;
20
—
20,000
cps.
+0.5dB
ANE
en
SPEAKER
‘|
EXTRA
X-TAL
BAR
ANTENNA
s
ne
oly
tect
i
matt
%
8.
FS.
Seis
StU
a
om
*
ea
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ua
ge
§
.
Nd
oo)
‘Me
Ps
FM
G
AM
FUSE
LEFT
RIGHT
TAPE-OUT
MIKE
-
2
SPEAKER
.
ANTENNA
117
V.
AC
OUTLET OUTPUT
TAPE-IN
MAG
HOOK-UP
POSITIONS
“MIC”-INPUT:
High
Impedance
dynamic
Microphone
is
con-
nected
to
this
terminal.
Note:
Above
3
Inputs
cannot
be
used
at
one
time,
it
must
be
used
individually.
Front
Panel
Function
Switch
is
phono
position.
“EXTRA”
INPUT
These
jacks
are
to
be
used
with
a
high
level
signal
of
high
impedance
such
as
a
tape
recorder
or
T.
V.
OUTPUT
CONNECTIONS:
TAPE
OUT:
|
Using
shielded
cable,
connecting
the
outpu
from
these
two
jacks,
to
the
tuner
input
jacks
of
your
tape
recorder
will
allow
simultaneous
recording
without
interference
with
your
listen-
ing
pleasure.
OPERATION:
After
all
connections
have
been
made,
as
covered
in
the
preceding
instructions,
the
unit
may
be
placed
in
speaker
or
phone
position
by
turning
the
“output”
control
in
clockwise
direc-
tion.
The
dial
light
when
lit
indicates
power
has
been
applied.
IMPORTANT:
Do
not
apply
power
to
this
unit
without
making
certain
both
speakers
are
connected.
Failure
to
do
so
may
result
in
severe
damage
to
the
unit.
If
the
dial
light
fails
to
light
when
the
unit
is
placed
in
the
‘on’
position,
remove
and
check
the
2-Amp.
fuse
located
at
the
rear
of
the
unit.
LISTENING
TO
PHONO
RECORDS:
Place
the
function
switch
to
the
(phono)
posi-
tion.
The
“MODE”
switch
should
be
set
at
the
stereo
or
MONOPHONIC
position,
depending
|
upon
the
type
records
being
played.
The
“BASS”
and
“TREBLE”
control
setting
would
depend
3)
FM
MPX
SECTION:
FREQUENCY
RESPONSE;
00
—
15,000
cps.
+0.5
dB
STEREO
SEPARATION;
35
dB/1,000
cps.
HARMONIC
DISTORTION;
LESS
THAN
1%/1,000
cps.
4)
AUDIO
AMPLIFIER
SECTION:
CIRCUIT;
6GW8
PUSH
PULL
GAIN:
MAG
PHONO
3mV
X’TAL
PHONO
35mV
MIC
4mV
EXTRA
250mV
=
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es
we
ae
Ge
oa
te
upon
personal
preference.
Adjust
the
balance
control
to
obtain
proper
balance
of
both
speakers.
When
operating
STA-400X
stereophonically,
it
may
be
desirable
to
reverse
the
two
channels
of
program
material,
the
‘“mode”
switch
will
be
turned
on
“reverse”
position.
The
LOUDNESS
control
is
used
to
compensate
for
the
apparent
loss
for
low
notes
at
low
output
levels.
|
The
RUMBLE
FILTER
is
used
to
cut
out
the
low
frequency
variational
effects
sometimes
pro-
duced
by
the
record
player
and
the
tape
recorder.
Scratch
filter
is
a
filter
to
cut
off
noise
at
play
back
of
a
scratched
record
and
broadcast
recep-
tion.
AM
RECEPTION:
Place
the
“function”
switch
to
the
“AM”’
posi-
tion
and
adjust
the
tuning
knob
to
the
desired
station.
The
“mode”?
switch
may
be
in
any
position.
Because
of
the
design
of
this
unit,
it
is
not
necessary
to
change
the
setting
of
the
mode
switch.
FM
RECEPTION:
Place
the
“function”
switch
to
“FM”
and
the
“FM/AFC”
switch
in
the
off
position
once
the
desired
station
has
been
obtained
by
using
the
tuning
knob,
and
place
the
“FM/AFC”
switch
in
the
“On”
position.
This
will
prevent
any
pos-
sibility
of
station
drift.
FM
STEREO
RECEPTION
(MULTIPLEX
STEREO):
Place
the
function
switch
to
“FM
STEREO”
and
select
the
FM
station
as
discribed
on
FM
Reception,
and
when
stereo
indicator
neon
is
brightened,
this
station
is
transmitting
in
stereo.
Note:
When
tuning
the
AM
or
FM
stations,
correct
tuning
is
obtained
when
the
gap
between
the
two
beams
of
light
on
the
Tuning
Eye
is
at
its
smallest
point.
TAPE
RECORDING
AND
MONITORING
Connect
an
audio
cable
from
the
left
channel
“TAPEOUT”
jack
to
the
left
input
(high
level)
of
the
tape-recorder.
Repeat
for
the
right
chan-
nel.
Also
left
channel
‘“‘TAPEIN”
to
the
left
channel
output
(high
level)
of
the
tape-recorder.
Repeat
for
the
right
channel.
To
listen
to
the
play-back
of
recorded
tape,
place
the
“TAPE
MONITOR”
switch
to
“ON”
position.
In
this
TONE
CONTROL:
+12dB
~—12dB
50
eps.
+10dB
~-12dB
10,000
cps.
RUMBLE
FILTER:
—~8dB
50cps.
-14dB
20
cps.
—8dB_
10,000
eps.
LOUDNESS
CONTROL:
+10dB
50cps.
+4dB_
10,000
eps.
(VOLUME
CONTROL
at
-
30
dB)
MUSIC
POWER
22
WATTS
PER
CHANNEL,
OUTPUT
POWER:
44
WATTS
TOTAL,
FREQUENCY
RESPONSE:
20
—
50,000
cps.
+1dB
BALANCE
|PHONO
SCRATCH
FM
AFC
OUTPUT
MODE
VOLUME
BASS
TREBLE
LOUDNESS
TAPE
MONITOR
position
it
automatically
bypass
the
“FUNC-
TION”
switch
and
permits
you
to
listen
to
tape
only.
When
you
are
finished
with
the
tape,
immediately
return
the
switch
to
the
“OFF”
position.
Otherwise
you
wili
be
unable
to
hear
any
other
program
material.
If
your
tape-re-
corder
incorporates
a
separate
play-back
head
with
pre-amplifier,
it
is
possible
to
listen
to
the
recording
a
fraction
of
a
second
after
it
is
made
as
a
quality
check.
Let
us
assume
that
a
re-
cording
is
being
made
off-the-air.
The
“FUNC-
TION”
switch
will
be
in
the
FM
position,
the
system
will
be
playing
the
actual
broadcast.
With
the
switch
move
to
“ON”,
the
system
will
now
be
playing
the
tape
recording
of
the
broad-
cast
just
after
it
has
been
recorded.
By
moving
the
switch
back
and
forth
it
is
possible
to
hear
whether
the
recording
is
equivalent
to
the
actual
broadcast.*
*
Only
for
recorders
with
separate
record
and
play-
back
heads
with
pre-amplifier.
STEREO
HEADPHONE:
Stereo
headphone
jack
is
located
at
the
lower
end
of
the
right
edge
of
front
panel.
Plug
in
a
low
impedance
stereo
headphone,
(MONARCH
Model
ES-300)
and
turn
the
“OUTPUT”
switch
to
“‘phones’’
position.
SPEAKER
PHASING
(rear
panel).
This
switch
is
used
to
adjust
the
speakers
so
that
they
will
‘‘aid”
and
not
cancel
each
other.
Set
the
VOLUME
for
a
moderate
output
and
stand
at
a
position
equidistant
from
the
speakers.
Listen
to
some
program
and
slide
this
switch
until
the
sounds
are
clear
without
the
hollow
or
empty
effects
from
one
of
the
speakers.
Only
one
setting
is
necessary,
and
need
not
be
adjusted
unless
the
speaker
connections
have
been
altered.
Taw
RET
BAZ
IR
aN
ae
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SHR
PTR,
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5
Nt
Os
Sa
tiene,
RESIDUAL
NOISE:
MAG
PHONO
30mV
EXTRA
5mV
(VOLUME
MAXIMUM,
TONE
FLAT)
INPUT
TERMINALS:
MAG
PHONO,
X’TAL
PHONO,
MIC,
EXTRA
OUTPUT
TERMINALS:
4,
8,
16
ohm
FOR
SPEAKERS
TAPE-OUTPUT
FOR
SPEAKERS
HEADPHONE
JACK
FOR
STEREO
HEADPHONES
5)
DIMENSIONS:
1634”
W
512”
H
6)
WEIGHT:
29
lbs.
13”
D
ed
as
ahs
*
ain”
ogo
3
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HIG
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SCHEMATIC
DIAGRAM
STA-400X
_
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TAPE
MONITOR
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