6b/9b amplifier bridged mode hook up, 11 9b, Five channel power amplifier – Bryston 9BSST User Manual
Page 13: Heat, Bridging kits

BA
LA
N
C
ED
IN
PU
T
4v
1v 2v
OU
TP
UT
25
0W
/8
X
LR
/P
H
O
N
E
IN
PU
T
Pin
1
/S
LE
EV
E:
Pin
2
/T
IP
:
Pin
3
/R
IN
G
:
G
N
D
PO
S(+
)
N
E
G
(–
)
WARNING!
RISK OF HAZARDOUS ENERGY
. MAKE PROPER SPEAKER CONNECTIONS.
SEE OPERATING MANUAL BEFORE USING.
HO
M
E T
HE
AT
RE
S
ET
TIN
GS
B
AL
AN
C
ED
IN
PU
T:
SIN
G
LE
E
N
D
ED
IN
PU
T:
See
m
an
ual
fo
rfu
rt
her
d
et
ai
ls
.
2V
1V
S
EN
SIT
IV
IT
Y
fo
r1
00
W
@
8
PO
LA
R
IT
Y
18
0
SIN
G
LE
E
N
D
ED
IN
PU
T
6B/9B AMPLIFIER BRIDGED MODE HOOK
UP
6B+9B-BRIDGED-HOOKUP(RP8)PMC.cdr WRP 1 NOV 2002
PU
SH
0
BA
LA
N
C
ED
IN
PU
T
4v
1v 2v
OU
TP
UT
25
0W
/8
X
LR
/P
H
O
N
E
IN
PU
T
Pin
1
/S
LE
EV
E:
Pin
2
/T
IP
:
Pin
3
/R
IN
G
:
G
N
D
PO
S(+
)
N
E
G
(–
)
WARNING!
RISK OF HAZARDOUS ENERGY
. MAKE PROPER SPEAKER CONNECTIONS.
SEE OPERATING MANUAL BEFORE USING.
HO
M
E T
HE
AT
RE
S
ET
TIN
GS
B
AL
AN
C
ED
IN
PU
T:
SIN
G
LE
E
N
D
ED
IN
PU
T:
See
m
an
ual
fo
rfu
rt
her
d
et
ai
ls
.
2V
1V
S
EN
SIT
IV
IT
Y
fo
r1
00
W
@
8
PO
LA
R
IT
Y
18
0
SIN
G
LE
E
N
D
ED
IN
PU
T
PU
SH
0
The
same
signal
is
fed
into
both
amplifier
channel
inputs
via
a
“Y”
adaptor
cable.
Note
that
the
POLARITY
of
one
channel
is
the
inverse
of
the
other.
THIS
IS
ESSENTIAL
for
the
amplifier
to
operate
in
bridged
mode.
Fa
ilu
re
to
IN
V
ER
T o
n
e o
f t
he
c
h
an
n
els
re
la
tiv
e t
o t
h
e o
th
er
w
ill
re
sul
t i
n
z
er
o o
u
tp
u
t.
It
d
oe
s n
ot
m
at
te
r
which
channel
is
set
to
zero
degrees
and
which
one
is
set
to
180
degrees,
however,
as
long
as
they
are
different.
When
bridging
two
channels
together
the
resultant
output
will
be
increased
by
6
dB
relative
to
the
output
of
a
single
channel.
To
keep
the
gain
of
a
bridged
channel
the
same
as
that
of
a
single
channel,
the
SENSITIVITY
switch
should
be
set
to
a
higher
voltage
setting.
For
example,
if
a
single
channel
is
set
to
“1V”
sensitivity,
then
both
the
bridged
channels
would
be
set
to
“2V”.
Likewise,
if
a
single
channel
were
set
to
a
sensitivity
of
“2V”,
then
the
bridged
channels
would
be
set
to
“4V”.
While
any
two
channels
can
be
bridged,
we
recommend
that
adjacent
channels
be
used
(as
shown)
to
facilitate
the
external
wiring
between
the
channels.
Note
that
only
the
POSITIVE
(+)
terminals
on
the
6B
power
amplifier
modules
are
connected
to
the
speaker.
A
ground
wire
(16g
or
heavier
wire
recommended)
must
be
connected
between
the
two
BLACK
output
terminals
on
the
6B
amplifier
channels
being
bridged.
DO
NOT
CONNECT
ANYTHING
ELSE
TO
EITHER
OF
THESE
BLACK
OUTPUT
TERMINALS!
The
red
(positive)
output
terminal
of
the
non-inverted
channel
(the
one
whose
polarity
is
set
to
zero
degrees)
is
connected
to
the
speakers
positive
(+)
terminal.
The
red
(positive)
output
terminal
of
the
inverted
channel
(the
one
whose
polarity
is
set
to
180
degrees)
is
connected
to
the
speakers
negative
(-)
terminal.
To SOURCE SIGNAL
BA
LA
N
C
ED
IN
PU
T
4v
1v 2v
OU
TP
UT
25
0W
/8
X
LR
/P
H
O
N
E
IN
PU
T
Pin
1
/S
LE
EV
E:
Pin
2
/T
IP
:
Pin
3
/R
IN
G
:
G
N
D
PO
S(+
)
N
E
G
(–
)
WARNING!
RISK OF HAZARDOUS ENERGY
. MAKE PROPER SPEAKER CONNECTIONS.
SEE OPERATING MANUAL BEFORE USING.
HO
M
E T
HE
AT
RE
S
ET
TIN
GS
B
AL
AN
C
ED
IN
PU
T:
SIN
G
LE
E
N
D
ED
IN
PU
T:
See
m
an
ual
fo
rfu
rt
her
d
et
ai
ls
.
2V
1V
S
EN
SIT
IV
IT
Y
fo
r1
00
W
@
8
PO
LA
R
IT
Y
18
0
SIN
G
LE
E
N
D
ED
IN
PU
T
PU
SH
0
BA
LA
N
C
ED
IN
PU
T
4v
1v 2v
OU
TP
UT
25
0W
/8
X
LR
/P
H
O
N
E
IN
PU
T
Pin
1
/S
LE
EV
E:
Pin
2
/T
IP
:
Pin
3
/R
IN
G
:
G
N
D
PO
S(+
)
N
E
G
(–
)
WARNING!
RISK OF HAZARDOUS ENERGY
. MAKE PROPER SPEAKER CONNECTIONS.
SEE OPERATING MANUAL BEFORE USING.
HO
M
E T
HE
AT
RE
S
ET
TIN
GS
B
AL
AN
C
ED
IN
PU
T:
SIN
G
LE
E
N
D
ED
IN
PU
T:
See
m
an
ual
fo
rfu
rt
her
d
et
ai
ls
.
2V
1V
S
EN
SIT
IV
IT
Y
fo
r1
00
W
@
8
PO
LA
R
IT
Y
18
0
SIN
G
LE
E
N
D
ED
IN
PU
T
PU
SH
0
To
SOURCE
SIGNAL
While
single
ended
or
unbalanced
inputs
are
used
here,
bridging
can
also
be
accomplished
using
the
balanced
inputs
as
shown
to
the
left.
When
bridging
“PRO”
channels
which
are
eq
uip
pe
d
w
ith
le
ve
l
co
nt
ro
ls
,
it
is
imperative
that
the
level
controls
on
BOTH
channels
being
bridged
be
set
to
their
maximum
clock-wise
positions
(0
dB).
While
balanced
inputs
are
used
h
er
e,
b
rid
g
in
g
ca
n
a
ls
o
b
e
accomplished
using
the
single
ended
inputs
as
shown
at
right.
HEAT
When
two
6B
channels
are
bridged
the
power
output
can
exceed
800
Watts.
Two
9B
channels
can
provide
over
300
W
a
tt
s.
W
h
e
n
o
p
e
ra
te
d
a
t
th
e
se
elevated
power
levels
there
is
a
p
o
s
s
ib
il
it
y
o
f
th
e
a
m
p
li
fi
e
r
overheating.
When
overheated
they
will
automatically
be
shutdown
by
internal
protection
circuitry
to
prevent
a
n
y
d
a
m
a
g
e
o
cc
u
rr
in
g
to
th
e
amplifier.
To
prevent
overheating
it
may
be
necessary
to
provide
external
fan
cooling
especially
if
the
amplifier
is
installed
in
an
enclosed
cabinet
and
operated
at
or
near
maximum
power
levels.
BRIDGING KITS
Bryston
can
supply
Bridging
Kits
consisting
of
a
“Y”
adaptor
cable
and
a
ground
strap
cable.
The
“Y”
adaptor
cable
can
be
equipped
with
either
RCA
(Phono)
connectors
(Part
#
150901)
for
single-ended
a
p
p
li
c
a
ti
o
n
s
,
o
r
w
it
h
X
L
R
co
n
n
ec
to
rs
(P
ar
t
#
1
5
0
9
0
2
)
fo
r
balanced
applications.
The
ground
strap
cable
is
equipped
with
gold
plated
spade
lug
connectors
on
either
end.
Bryston
Bridging
Kits
are
designed
for
use
with
adjacent
channels.
AL
THOUGH 6B CHANNELS ARE SHOWN, THE
SAME HOOKUP APPLIES TO 9B CHANNELS
11
9B
SST
FIVE CHANNEL POWER AMPLIFIER