Sansui QS-500 - Page 6

CONNECTIONS
Your QS-500 permits you to continue to use your
present 2-channel stereo receiver, amplifier or music
system and speaker systems for the front channels
of 4-channel stereo system. Instructions will be
given below on making the necessary connections,
but before you set out to make such connections,
examine the connections among the various pieces
of equipment in your present stereo set-up once
more. If a tape deck is connected, disconnect it
once. (Refer to the instructions on the connections
of a 2-channel tape deck on page 7).
However, if you have bought the amplifier and
speaker systems for the front channels for the first
time, connect them for regular 2-channel reproduc-
tion, as instructed by their manufacturers.
When the above preparations are finished, proceed
to make the connections, referring to both the in-
structions below and the diagram on page 8.
Be sure to make them firm and secure.
Connecting the QS-500 to the
Front-Channel Amplifier
Take out the four shielded cords from the acces-
sory kit supplied with your QS-500. Then:
1. Connect a pair of them between the terminal
marked “FRONT AMP. FROM REC OUT” on the
unit’s rear panel and the tape recording terminal of
the front-channel amplifier. |
2. Connect another pair between the terminal
marked “FRONT AMP. TO TAPE MON” and the
amplifier’s tape playback or monitor terminal.
Be sure that the left and right channels are kept in
the same order at both terminals. The accessory
shielded cords are colored in blue and yellow to
facilitate this.
NOTE: Once you have made the above connec-
tions, turn on the tape monitor switch of the front-
channel amplifier (or set it to PLAYBACK).
Connecting the Rear-Channel
Speaker Systems
Up to two pairs of speaker systems can be con-
nected to the QS-500 to reproduce rear-channel
sound, and be driven either independently or simul-
taneously as selected by the unit’s Power/Rear
Speakers Switch.
If you are connecting only one pair, connect it to
either SYSTEM A or SYSTEM B terminal. Keep
the left and right channels, plus and minus polari-
ties in the correct order, referring to the diagram
on page 8. Should you want to add another pair
at a later date, connect it to the other terminal.
If you have two pairs of speaker systems connected
to the QS-500, it is suggested that you place one pair
to form the ‘2-2 System’ and the other to form the
‘Front 2-2 System’ of speaker position (see page 9).
About the Speaker Polarities
Whether or not the four speaker systems in a 4-
channel stereo system are in phase with one another
is an important factor to the maximum enjoyment
of 4-channel stereo sound. The phase relationship
must be correct not only between the front left and
right speakers, and the rear left and right speaker
systems, but also between the front channels and
the rear channels.
Even if you have connected the four speaker
systems to the two amplifiers with correct polarities
between each pair, the speakers may not be in phase
with one another if the amplifiers essentially differ
in circuit design. They may also fail to achieve a
correct phase relationship because of certain acoustic
conditions of your room. If such seems to have
taken place, change the rear speaker connections
and change their polarities while actually listening
to them until you feel certain you’ve obtained a
most natural 4-channel stereo effect.
CONNECTIONS
NOTE:
1. The speaker systems connected to your QOS-500
must possess an impedance of 4 to 16 ohms. If you
want to connect two pairs and drive them simul-
taneously (by turning the unit’s Power/Rear Speak-
ers Switch to the “SYSTEM A+B” position), they
should all have an impedance of 8 ohms or more.
2. As your QS-500 connects up to two pairs of
speaker systems for the rear channels and allows
selecting either or both pairs, you could install a 4-
channel stereo system in two rooms and operate
them simultaneously or independently, provided
that your front-channel amplifier is equipped with
a speaker selector switch similar to the OS-500’s
Power/Rear Speakers Switch.
Connecting Tape Decks
2-Channel Tape Deck
Since you connect your QS-500 to the tape recording
and monitor terminals of your front-channel ampli-
her,
you
cannot
connect
a
2-channel
tape
deck
to
that amplifier. This is why your QS-500 is equip-
ped with recording and monitor terminals for such
a tape deck. There are both pin jack type terminals
anda
DIN
connector
socket,
and
either
may
be
used.
If you want to use pin jack terminals:
1. Connect one pair of shielded cords between the
“2
CHANNEL
TAPE
REC”
terminals
of
the
OS-
900
and
the
recording
input
terminals
of
the
tape
deck.
2. Connect another pair of such cords between the
unit’s
“2
CHANNEL
TAPE
MON”
terminals
and
the
tape
deck’s
playback
output
terminals.
Be
sure
to
keep
the
left
and
right
channels
in
the
same
order at both terminals in each case.
If
your
tape
deck
is
equipped
only
with
a
DIN
con-
nector
socket,
however,
plug
the
DIN
connector
cord
extending
from
it
into
the
5-pin
DIN
connector
socket
on
the
OS-500’s
rear
panel.
4-Channel Tape Deck
If you connect a 4-channel tape deck to the OS-500,
you'll
be
able
to
record
the
4-channel
signals
con-
verted by the unit’s built-in 4-Channel Synthesizer
Decoder,
as
well
as
to
reproduce
4-channel
recorded
tapes. |
The tape deck may either be connected to the unit’s
pin jack terminals or the DIN connector socket. If
using
the
former:
_
1.
Connect
the
4-channel
“TAPE
REC”
terminals
on
the
unit’s
rear
panel
with
the
input
terminals
of
the
tape
deck
by
means
of
the
shielded
cords.
2.
Then
connect
the
4-channel
“TAPE
MON”
terminals
on
the
unit’s
rear
panel
with
the
output
terminals
of
the
tape
deck,
also
by
means
of
the
shielded
cords.
Be
sure
not
to
confuse
the
front
and
rear,
left
and
right
channels.
If using the DIN connector socket:
1.
Insert
the
front-channel
DIN
connector
plug
of
the
4-channel
tape
deck
into
the
upper
DIN
con-
nector
socket
marked
“4
CHANNEL
TAPE
RE.
CORDER”
on
the
unit’s
rear
panel.
2.
Then
insert
the
rear-channel
DIN
connector
plug
of
the
tape
deck
into
the
lower
DIN
connector
socket.
NOTE:
On
many
4-channel
tape
decks,
each
of
the
four
channels
is
designated
as
follows:
FRONT
LEFT—
CHANNEL
1
or
TRACK
1
FRONT
RIGHT—CHANNEL
3
or
TRACK
3
REAR
LEFT—
CHANNEL
2
or
TRACK
2
REAR
RIGHT—
CHANNEL
4
or
TRACK
4
incatiaiaieidlneiiietetetteha nin eitialmneettnaatienieeetctiaitereem naman aden aratetn petted tte eee ane SE ee at ore