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Rotel RB-970BX - MAKING THE CONNECTIONS; CONNECTING THE SPEAKERS; CONNECTING THE PREAMPLIFIER; CONNECTING THE POWER CORD

Rotel RB-970BX
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•
Connect
a
wire
from
the
ground
terminal
on
the
rear
panel
of
this
unit,
to
the
ground
terminal
on
the
applicable
source
unit
(or
any
other
point
on
the
cabinet
where
noise
can
be
brought
down
to
a
minimum).
However,
absolutely
ensure
the
wire
does
not
touch
any
areas
related
to
the
power
source
such
as
auxiliary
AC
outlets,
and
do
not
insert
the
wire
inside
the
cabinet.
•
Contact
your
dealer
for
further
advice.
STEREO
AND
MONO
OPERATION
The
power
amplifier
can
be
used
either
as
a
normal
stereo
or
as
a
bridged
mono
amplifier.
The
unit
comes
factory-set
as
a
stereo
amplifier
(the
BRIDGED
switch
on
the
back
of
the
unit
is
set
at
the
STEREO
position).
Do
not
tamper
with
the
switch,
unless
you
wish
to
use
the
unit
as
a
mono
amplifier,
in
which
case
reset
the
switch
to
the
MONO
position.
Do
not
connect
the
speakers
before
the
switch
position
is
set
correctly
according
to
your
choice.
Two
bridged
mono
amplifiers
must
be
used
for
stereo
operation.
MAKING
THE
CONNECTIONS
_
See
Illustration
1
-
Rear
Panel,
to
visualize
where
the
connections
to
components
are
to
be
made.
1.
CONNECTING
THE
SPEAKERS:
•
The
illustration
shows
what
audio
components
you
can
connect
to
the
rear
panel
of
the
unit
and
how
they
should
be
properly
hooked
up
via
RCA
type
pin
cords.
Ensure
that
the
Left
and
Right
channels
are
correctly
matched
between
the
RCA
type
sockets
of
the
unit
and
those
on
the
components.
•
Use
speakers
of
impedance
ratings
of
4
to
16
ohms.
However
if
you
wish
to
operate
the
unit
in
bridged
mode
as
a
mono
power
amplifier
with
only
one
speaker,
ensure
the
speaker
is
rated
8
ohms
minimum.
The
speaker
impedance
will
be
indicated
on
the
back
of
the
speakers
or
in
the
speaker's
instruction
manual.
•
Use
proper
speaker
cords
-
which
your
dealer
will
normally
recommend
-
with
as
low
capacitance
content
as
possible.
The
speaker
connections
(five-way
binding
posts)
provided
on
the
back
of
the
amplifier
are
suitable
for
banana
plugs,
as
well
as
bare
wire
or
spade
lugs.
•
If
connecting
the
speaker
cords
directly
with
bare
wire
ends,
we
suggest
you
strip
off
about
1
cm
of
the
insulation
shield
cover
from
the
ends
of
the
speaker
cords.
Twist
any
exposed
strands
tightly,
and
insert
the
ends
fully
and
securely
into
the
terminals
on
the
rear
panel.
•
Check
that
the
speaker
cord
ends
(exposed
tips)
on
the
terminal
posts,
have
no
stray
wires
touching
one
another,
as
this
can
cause
short
circuits
and
may
damage
both
the
amplifier
and
the
speakers.
•
When
using
the
unit
as
a
STEREO
power
amplifier
make
sure
the
BRIDGED
switch
is
set
correctly
to
the
STEREO
position.
Connect
the
Left
and
Right
channels
correctly
between
the
speaker
and
the
unit,
and
ensure
for
each
channel
that
the"+"
and
terminals
are
also
correctly
matched.
•
When
using
the
unit
as
a
MONO
power
amplifier
(bridged
mode):
make
sure
the
BRIDGED
switch
is
set
correctly
to
the
MONO
position.
Connect
only
one
speaker
to
the
power
amplifier:
connect
the
"+"
speaker
lead
wire
to
the
LEFT
"+"
terminal
post
on
the
power
amplifier
and
the
speaker
lead
wire
to
the
RIGHT
"+"
terminal
post.
Do
not
operate
the
amplifier
with
a
common
ground
speaker
switching
device.
This
will
damage
the
amplifier
(and
void
your
warranty).
Consult
your
dealer
if
in
doubt.
2.
CONNECTING
THE
PREAMPLIFIER
See
Illustrations
2,
3
and
4
-
when
using
the
unit
as
a
stereo
power
amplifier,
a
monaural
amplifier
or
as
a
stereo
amplifier
for
bi-amplification,
respectively.
•
The
stereo
mode
uses
one
preamplifier
and
one
power
amplifier.
•
The
"bridged"
monaural
mode
uses
one
preamplifier
and
two
mono
power
amplifiers
•
The
bi-amping
mode
uses
one
preamplifier
or
control
amplifier,
which
has
two
sets
of
outputs
connected
in
parallel,
and
two
stereo
power
amplifiers,
one
driving
the
tweeters
and
the
other
driving
the
woofers
of
the
speakers,
which
have
separate
connectors
for
the
tweeters
and
the
woofers.
•
Ensure
that
regardless
of
the
mode
you
choose,
that
the
correct
connections
are
done.
3.
CONNECTING
THE
POWER
CORD
•
Always
handle
the
power
cord
with
care
and
never
pull
the
plug
out
of
the
wall
socket
by
tugging
the
cord.
Hold
the
plug
to
remove
it
from
the
wall.
•
Ensure
the
VOLUME
control
is
set
to
the
minimum
position
before
plugging
in
the
power
cord.
•
Connect
the
power
cord
to
the
AC
(mains)
outlet.
•
When
plugging
and
unplugging
make
sure
the
power
switch
on
the
unit
is
turned
off.
NOTES:
Verify
that
all
connections
are
properly
and
securely
made
and
that
the
amplifier
and
components
have
been
plugged
in.
Using
higher
quality
interconnect
cables
will
improve
sound
quality
2

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