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Bryston BP-25 User Manual

Bryston BP-25
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DDD0oCJ)[]
CONNECTING
BRYSTON
POWER
AMPLIFIERS
and
PRE-
AMPLIFIERS
for
REMOTE
ON/OFF
CONTROL
Rear
panel
detail
of 58/88 amplifiers
Rear
panel
detail
of
38/48 amplifier
Rear
panel
detail
of
28-LP
amplifier
Bryston's
remote
amplifier
on/off
function
allows
the
user
to
link
the
power
on/off
operation
of
Bryston's BP20/25
pre-amps
to
one
or
more
Bryston
power
amplifiers,
models 2B-LP, 3Bst,
4Bst, 5Bst, 7Bst
& 8Bst. When
the
Remote
ON/OFF
switch
on
the
rear
panel
of
a
Bryston
power
amplifier
(shown above) is
set
to
LOCAL
the
amplifier
responds
only
to
its
front
panel
power
switch. When
the
Remote
ON/OFF
switch is
set
to
one
of
the
delay
settings,
howev-
er,
the
amplifier
will accept a
remote
control
voltage
(between
4 and 12
volts,
either
AC
or
DC)
to
turn
the
amp
on
or
off.
The
delay
settings
cause
the
amplifier
to
wait
for
a
few
sec-
onds
after
initially
receiving a
control
signal
before
turning
on
the
amplifier. This allows sev-
eral
amplifiers
to
turn
on
sequentially
rather
than
simultaneously.
If
the
remote
on/off
func-
tion
is used,
the
front
power
switch
on
the
power
amplifier
must
be pushed in (ON). The
exception
to
this
is
the
2B-LP
on
which a
front
mounted
power
switch
is
not
standard. Also,
the
2B-LP does
not
offer
delay
settings
and
it
uses a
rear
mounted
toggle
switch
to
select
between
REMOTE,
OFF
(center
position)
or
LOCAL
(on).
The source
of
the
control
voltage
can
be a Bryston's BP20/25
preamp
or
other
control
product
capable
of
supplying 12Vdc
(maxi-
mum)
@
64mW
. When a Bryston BP20/25 is used,
either
the
ON/OFF
or
MUTE/UN-MUTE
operation
of
the
preamp
can be used
determine
when
the
control
voltage
is
sent
to
the
power
amplifier.
In
addition,
BP25
preamps
are
supplied
with
an
infra-red
remote
control
which can
be used
to
toggle
the
preamp's
MUTE
function
and
thus
can also be used to
turn
Bryston
power
amplifiers
on
and off. The
power
switches
for
the
BP20/25
preamps
are located on
their
external
power
supply
(MPS-l)
and
turning
this
power
supply
on
or
off
can also be used
to
turn
Bryston
amplifiers
on and
off
remotely.
The
rear
panel
of
the
MPS-l
power
supply
is equipped
with
a
3-terminal
connector
(see
illustration
on
next
page) which
provides
two
different
12v
output
signals. The
+12V
SW
ter-
minal,
which responds
to
the
MUTE
operation
of
the
preamp,
generates
a 12VDC signal when
the
preamp
is
not
muted
. When
the
preamp
is
muted
the
12VDC signal
is
interrupted
and
any
remotely
controlled
power
amps
would
turn
off. The
+12V
terminal
provides a 12VDC signal
whenever
the
power
supply
is
turned
on.
To
summarize:
Option
1:
Using
the
+12V
SW
and
COM
terminals
of
the
rear
panel
of
the
preamps
MPS-l
power
supply, a
12-Volt
signal is
sent
to
the
amplifier
based on
the
status
of
the
pre-
amp's
MUTE
function. When
the
preamp
is
muted,
the
12V
signal is
interrupted
and
the
power
amp
turns
off.
Option
2: Using
the
+12V
and COM
terminals,
a 12 Volt
control
signal will be
sent
to
the
power
amplifier
only
when
the
preamp
power
supply
is
turned
ON. Therefore,
the
power
amp
will be
turned
on
only
when
the
preamp
is
turned
on.
The
terminal
blocks will
accept
stranded
wires between
12
and 26AWG,
stripped
up
.35/1.
The setscrews
are
used
to
open
(loosen)
and close
(tighten)
the
wire
cages.

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Bryston BP-25 Specifications

General IconGeneral
BrandBryston
ModelBP-25
CategoryAmplifier
LanguageEnglish

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