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39
SPEAKER
PHASING
The
left
and
right
channel speakers
should
be
connected
so
they are "in
phase" with each other. This
means
that
the speaker
cones
in both the
left
and
right
channel speaker systems should
move
in the
same
direction
at
the
same
time,
when
driven
by
identical
signals.
Read
through the
entire
"Speaker
Phasing" section before proceeding.
( ) Connect a wire
from
either
terminal
on
your
left
speaker to the
Amplifier terminal C
that
is nearest
to the
PHONO
input socket.
( ) Connect another wire
fr~m
the
remaining terminal
on
your
left
speaker to terminal Lon the
Amplifier.
( )
Similarly,
connect a wire
from
either
terminal
on
y~ur
right
speaker to the
other
terminal Con
the Amplifier.
( ) Connect a wire
from
the
rema1n1ng
terminal
on
your
right
speaker to
terminal Ron the Amplifier.
( ) Press the Amplifier
MONO
pushbutton
to the
ON
position.
( )
Connect
a tuner
or
other
signal
source to the appropriate input
on
the Amplifier.
( )
Turn
the signal source on.
Turn
the Amplifier
VOLUME
control to a
comfortable
listening
level.
( )
Turn
the speakers
so
they face each
other
and
are approximately three
feet
apart.
See
Figure
1-3.
( )
As
you
stand in
front
of
the
speakers
as
shown,
note the loudness
of
the bass notes.
Now
interchange
the
two
wires
of
the
right
speaker.
When
the loudest bass tones are
heard, the speakers are in phase.
If
the bass tones diminished
when
these wires
were
interchanged, the
speakers were in phase before
and
are
now
out
of
phase.
Change
the
two
right
speaker wires
back
once
again to the previous connections;
then leave
them
connected in
this
manner.
The
speakers are
now
in phase.
NOTE:
If
your speaker system cannot
be
moved,
you
can
use
the following
method
to
check
the phasing. Stand in
front
of
the speakers
as
shown
in Figure
1-4.
If
the
sound
is
coming
directly
from
the
front,
the speakers are in phase.
If
the
sound
comes
from
both
sides,
the speakers
are out of phase; interchange the
two
wires
on
either
speaker. This will bring
them
into phase.
PHONE
PLUG
Figure 1-5
shows
a type
of
plug
that
can
be
installed
on
the
end
of
a
stereo
headphone
cable.
The
tip
of the plug
connects to the
right
channel, the
ring
connects to the
left
channel,
and
the
sleeve
is
the
conmon
connection.
~
#6 X 5/8"
SHEET
ME
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5
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E
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HEE
T
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AL
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r----
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I
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# 6 x I / 4"
SHEET
METAL
5
CREW
I I
:
--
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--
I
Figure 1-3
PICTORIAL
4-3
Figure 1-5
WOOD
I DE
PA
NEL
/t6x5/8
"
SHEET
METAL
5 C
RE
W
r SO
UND
COMll!G FRO~\
BOTH
5 1D
ES7
s
our-,,o
CO
MI
NG
0
FR
OM
FR
ONT
_l
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i
Figure 1-4
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