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ST Series
Bryston ST Series User Manual
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BRYSTON
9B
ST
MANUAL
Clipping
indicators:
All
Bryston
amplifiers
use
bicolor
LEDs
with
green
indicating
power
on
and
flashing
red
indi¬
cating
actual
overload
or
distortion.
Upon
power-
up
the
9B’s
LED’s
will
remain
“red”
until
all
volt¬
ages
stabilize
and
the
unit
comes
out
of
mute
and
the
LED
turns
green.
If
the
LED
indicator
contains
a
substantial
red
content,
when
program
is
present,
it
should
be
considered
as
a
sign
that
the
level
is
too
high
and
may
cause
speaker
damage
if
it
continues.
It
should
be
remembered
that
the
Bryston
ST
se¬
ries
are
powerful
amplifiers,
and
that
it
is
possible
to
damage
almost
any
speaker
if
an
amplifier
is
used
in
a
thoughtless
or
abusive
manner.
Brys¬
ton
will
not
be
responsible
for
damage
caused
in
this
manner.
The
clip-sensing
circuit
uses
an
AC
comparator
to
detect
any
source
of
signal
distortion
including
clipping,
short
circuits
in
cabling,
excessive
DC
or
supersonic
signals,
whether
at
the
input
or
out¬
put.
Most
conditions
which
could
cause
the
red
LED
to
light
for
more
than
a
moment
or
two
can
be
dangerous
to
your
loudspeakers
and
should
be
corrected
immediately.
If
a
specific
LED
remains
“red”
without
signal
present,
it
may
indicate
a
thermai
overload
condition
and
the
channel
is
shut
down
until
safe
operating
temperatures
return.
Bryston
9B
ST
Remote
Power
Control
-
THX
units
only
r
REMOTE
POWER
CONTROL^
LOCAL
REMOTE
SELECT
’LOCAL’
WHEN
NOT
USING
REMOTE
POWER
CONTROL
DC
OR
AC
4-12V
FRONT
PANEL
POWER
SWITCH
MUST
BE
’ON’
WHEN
USING
REMOTE
POWER
FUNCTION.
n
©
I
i©
The
9B
ST
remote
power
control
function
allows
the
user
to
link
the
power
on/off
of
the
9B
to
an
exter¬
nal
preamplifier,
processor,
or
other
control
device.
This
is
useful
in
installations,
such
as
home
the¬
ater,
for
powering
up
multiple
am¬
plifiers,
often
at
distant
locations
from
the
source.
Located
on
the
back
panel
of
the
9B
ST
is
a
two
screw
terminal
input
connector.
The
amplifier
can
be
powered-up
by
applying
4-12
Volts
(AC
or
DC
of
either
polarity)
connected
to
the
termi¬
nals
of
the
jack.
This
jack
will
accept
1/4
inch
stripped
wire
ends,
inserted
into
the
square
holes
provided,
and
the
adjacent
screws
carefully
tightened
to
hold
them
in
place.
The
input
current
remains
at
less
than
3
ma
regardless
of
voltage,
there¬
fore
22
Ga
wire
is
sufficient.
^
The
front
panel
power
switch
must
be
left
in
the
"on"
position
(in),
at
all
times
for
the
am¬
plifier
to
operate
in
remote
power
control
mode.
^
In
‘REMOTE’
position
the
amplifier
can
only
be
turned
on
by
applying
a
remote
control
voltage
of
4-12
volts.
In
the
‘LOCAL’position
the
amplifier
will
not
respond
to
remote
control
voltage,
only
the
front
panel
power
switch.
^
At
all
times
the
power
can
be
turned
off
by
using
the
front
panel
power
switch.
Page
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Bryston ST Series Specifications
General
Type
Solid State
Frequency Response
20Hz to 20kHz ±0.1dB
Gain
29dB
Inputs
Balanced XLR, Unbalanced RCA
Dimensions
Varies by model
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