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Philips 22 AH 793 User Manual page 4

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your plug proceed
as
follows:
The Brown
wire
must
be
connected
to
the
termi-
nal which
is marked
with
the
letter
L
or
coloured
Red.
The
Blue
wire
must
be
connected
to the
termi-
nal
which is marked with
the
letter N or coloured
Black.
Note:
This apparatus
must
be
protected
by
a
3
amp Fuse if
a 13
amp
plug
is
used
or
if
any
type of plug
is
used by
a
5
amp
Fuse either in
the plug or
adapter or
at
the distribution
board.
If
in
doubt consult
a
qualified
electrician.
Connections
Loudspeaker
enclosures
Loudspeaker
enclosures,
impedance
4-8
Ohm,
should
be
connected
to
the sockets
@'
@'
@
and
I?]).
Stereo
enclosures,
connected
to
the
sockets
IE§:
and
@
are placed
in
front
of
and,
respectively,
to the
right
and
the
left
of
the
listener.
'STEREO
2x2'
enclosures,
connected
to
the
sockets
(24)
and
®
behind
and,
respectively,
to
the
right
and
to
the
left of the
listener.
Remark:
For
reproduction
through
the
'STEREO
2x2'
loudspeakers,
as a consequence,
two
stereo
loudspeaker
enclosures
must
be con-
nected. In
case
of 'STEREO
2x2'
reproduction
all
the
enclosures
connected
should
prefer-
ably
be of the
same
specification.
MFB-enclosures
These enclosures
should be connected
to the
special MFB-socket
((3\
For 'STEREO
2x2'
reproduction
MFB-enclo-
sures can be used in combination
with
conven-
tional
loudspeaker
enclosures,
in which case
the latter must
be
connected
to the sockets
@
and
@.
Where the
two types of
enclosures
are used in
combination,
it is
preferable
to posi-
tion
the
MFB-enclosures
in
front of the
liste-
ner.
Note:
Provided
a
pair of conventional
enclo-
sures is connected
to the sockets
@
and
@'
a second pair
may,
in addition be
connected
to
the
sockets@
and
2 .
Where
MFB-enclosures
are
used,
the
input
sensitivity
control
bn
the box must be
set ac-
cording to the
type
of
enclosure,
viz.:
In
the case of MFB's
with
a continuously
adjustable
sensitivity
control,
the setting must
be
"1
V".
In
the case
of
MFB's with a
3-position
input
sensitivity
switch the setting
must
be "PRE-
AMPLIFIER 1
V".
6
Positioning
the
loudspeaker
enclosures
To
obtain the
optimum
stereo
effect,
a
certain
amount of care
must
be exercized
in position-
ing the
loudspeaker
enclosures.
Since
every
room
has its
own
acoustic
cha-
racteristics,
which
are
governed mainly by the
shape,
size and furnishings
of the
room,
it is
impossible
to state here just where
the
enclo-
sures
should
be
placed. The
best
positions can
be found only by trial and
error.
The following
notes
should
be
of
help
to you.
Try to keep
the distance
between
the
en-
closures about
the same as the
distance of each
to
the
listener.
Bass response
is accentuated
if the enclo-
sures are
situated
in corners
or on the
floor.
If
the response
then
is
not
desired,
try
to im-
prove matters
by
placing
the enclosures some-
what
higher,
and farther from the
corners.
Reproduction
of
treble
is adversely affected
if
the
enclosures
are
positioned
behind
furni-
ture,
curtains
etc.
Keep
the
loudspeaker
set-up as
symmetrical
as
possible. The
effect of
a
certain asymmetry
can be
offset
by
means
of
the stereo
balance
control.
Aerials
FM-aerial
Transmissions
from
nearby
FM-stations
can
be received
using
a
provisional
wire
aerial
(supplied),
which
should
be
connected
to
socket
i@).
For
best
results,
of
course,
particularly
in
the
case
of FM-stereo
reception,
an
external
aerial
(75 Ohm) should be
employed.
Connect this
aerial to
socket~.
AM-aerial
The built-in
ferrite
rod aerial
will provide
sa-
tisfactory
reception of
local
stations
with
strong
signals.
If reception
is too weak
an
AM-outdoor
aerial
can
be connected
to socket
@.
If
desired,
an earth
lead can be connected
to the other
pole of this
socket.
Headphones
Stereo
headphones,
impedance
8-600
Ohm,
can be
connected
to socket
@.
Connecting
the headphones
cuts off
the
loud-
speakers.
Remark:
Listenina
via
headphones
usually
asks for a higher setting of
volume
control
~
than
when
listening
via
the
loudspeakers.
Therefore
it is recommended
to set
this
con-
trol to a lower
setting
before
removing
the
headphones
plug.
Record player
A record player fitted with
a magneto-dynamic
pick-up
cartridge
can
be
connected
to socket
~\
Recorders
Reel to
reel or
cassette recorders
can be
con-
nected,
for
recording
and
playback,
to the
sockets
@
and
\2]).
Tuner/amplifier
Amplifier
section
Switch
on/off
with
G)
Dial
illumination
lights up/goes
out.
Select playback
of
tuner,
record
player
or
re-
corder with source
selector@.
Adjust volume
with
(D.
Adjust
balance
with
0.
Balance
is the
re-
lative
volume
between
the two stereo
chan-
nels.
Adjust bass
with
@.
Adjust treble
with
(j).
Contour:
switching
on contour
Ii)
boosts
bass and treble
tones at low listening
levels.
Our ears have less
sensitivity
to low and high
frequencies
at low listening
levels and
switch-
ing
on contour
compensates
for
this
effect.
High filter
CD
can
be
switched
on to
reduce
high
frequency
noise
such
as tape
hiss,
record
scratch, etc.
Remark:
Switch
on
contour
and high
filters
only
when
nece-ssary.
Tuner section
Tuning to AM-stations
Set
source
selector@to
'LW'
or
'MW'.
Tune to
the
station
desired
with
@.
Tuning is
optimum when
the pointer of indi-
cator
@
shows
maximum
deflection.
Tuning to
FM-stations.
General
notes to be observed
when tuning
to
FM-stations.
The reception
quality
of FM-stereo
broad-
casts dependsto a large
extent uponthestrength
of the signal
provided
by the
aerial.
If
a
strong
signal
is
being
received
and
control
@
is
switched
to the
'STEREO'
mode,
high
quality,
low noise, stereo
reception
will
result.
Stereo
indicator
will then
light
up.
If the
signal
is weak however the noise
level
will
increase
and may
spoil the programme
content.
At a
pre-determined
level
the
s
twill
automatically
switch to
the
'MONO'
mode.
The
noise
level
will then
be reduced but
the
ster
0
effect
will,
of
course,
be
lost.
This function
can
be
performed
manually
by
setting
switch
Q
2)
to the
'MONO'
mode.
In
addition,
the
rotary
part
of
the
control can
be
used to
gradually alter
the stereo
separation.
In
this
way
the
noise
level
can
be reduced to
an acceptable
level without
totally
losing
the
stereo
effect.
AFC (Automatic
Frequency
Control)
can
be
switched on
by pressing
key@.
Then,
with
AFC in
operation,
stable reception
is
automatically
assured.
Remark:
Preferably
do
not
use
AFC
while
tun-
ing.
Also
when,
using
AFC,
this would lead to
undesired
tuning
to a
stronger
neightbouring
station.
Tuning
isoptimum
when
the pointer
of
indica-
tor@
shows
maximum
deflection.
FM-manual
tuning
Set
source
selector@to
'FM'.
Then press
key
@.
Tune to
the
station
desired
with
knob
14
Pre-setting
FM-stations
Set
source
selector@to
'FM'.
Press
one of the
buttons@.
Tune to
the
station desired
by
rotating this
button.
Tuning frequency can
be
read from
indicator
@.
Follow
this procedure
for
setting the
remain-
ing buttons
@.
Tuning to
preset
stations
Set source
selector
@
to
'FM'.
Then press one of the preset
buttons
@.
Operation with record player
Switch
on
the
set with
CD.
Set
source
selector
@to
'PHONO'
position
and tape/monitor
selector
to
'SOURCE'.
Adjust
volume, balance,
bass
and
treble
with
(D,0,
@
and
Operation with recorders
Recording
Onto
recorders,
connected
to the
sockets
@
and
@
recordings
can be made of radio
pro-
grammes or
record
playback.
7

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