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4-CHANNEL
STEREO SYSTEM
Conventional 2-channel stereo systems are designed so that
instrumentai and vocal music can be reproduced
in
stereo
through
left
and
right
speakers
placed
in front of the
listener.
In
contrast,
the newly
developed 4-channel stereo
system
features
a
high
degree
of
reproduction
of full
dimensional
sound including the atmosphere and
applause
in
a
concert
hall in addition to
stereo sound
from
singers
and instruments.
Consequently,
you
can get magnificently
lifelike
4-channel
sound
far
superior
to
that
of
2-channel
stereo.
The Pioneer 4-channel Decoder Amplifier, model QL-600A
combined
with your
SX-727, and
two
additional
speakers
gives
you
4-channel
sound.
See
Fig.
14.
HOW
TO
USE
THE 4.CHANNEL
DECODER
AMPLIFIER
OL-6OOA
To obtain
4-channel sound, combine
the
Pioneer QL-600A
with your
SX-727
.
The QL-600A has
a matrix
decoder
circuit
for
converting
a
2-channel stereo signal
into a
4-
channel stereo signal
plus amplifiers
for
driving the two
rear
speaker
systems. As
shown
in
Fig. 15, the
QL-600A
can
be plugged
into
the TAPE 2 REC and TAPE 2 MON jacks
of
your
SX-7
27
,
giving you
4-channel
sound
of
the
RE G-
ULAR or SQ MATRIX
type.
With the MATRIX
system,
matrix
recordings
or
FM
stereo broadcasts are
reproduced to
perfection.
What's more,
with
a 4-channel stereo tape deck
(Pioneer QT-6600,
for
example) connected
to the
QL-600A
as shown
in
Fig. 15,
discrete 4-channel tapes can be
re-
produced.
CARTRIDGE
TAPE
PLAYER
TURNTABLE
TAPE
DECK
:
OTTO*
sx-727
oL-600A
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Fis.
14
SPEAKER
SYSTEMS
FRONT
LEFT
SIDE
RIGHT
SIDE
2
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REAR
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Fis.
15
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