Pioneer QM-800 Руководство по эксплуатации - Страница 2
Просмотреть онлайн или скачать pdf Руководство по эксплуатации для Усилитель Pioneer QM-800. Pioneer QM-800 8 страниц. Quadraphonic power amplifier
Печатать страницуFirst. let
us
thank you
for
the confidence
you
have
shown
us
in
purchasing
the
Pioneer
quadraphonic
power
amplifier.
model
OM-800. This
amplifier is
designed
to
serve
in
a
4-channel
stereo installation, together
with a
4-channel
preamplifier,
4
speaker systems
and
one
or
several
program
sources.
Engineered
for
highest sound
fidelity,
it
will
open
up a whole
new
world
of
"environmental
sound."
Please
read
the following
instructions
carefully
to
assure
that
all
connections
are
made
correctly
and
that the
OM-
800
will
reveal
its
true
performance
quality.
FEATU RES
DIRECT COUPLING OF
ALL
STAGES
Direct coupling
of all
amplifier
stages
greatly
improves
phase
characteristics
and permits
an extremely wide
fre-
quency
response
down
to
near-DC.
A
load-regulated power
supply
unit
is
employed, and
output
power is higher
than
will
ever be required.
LEVEL METERS FOR
ALL
FOUR CHANNELS
To obtain optimum
sound balance
in
a 4-channel
system,
four
separate
level
meters
are
provided.
Moreorrer,
the
meters'sensitivity can
be adjusted
in
three
stages
(0,
-10
and
-20
dB)
to
permit
accurate
readings
at
all
volume
levels.
ADJUSTABLE lNPUT SENSITIVITY
As
the
power
amplifier's
input
sensitivity can
be adjusted
in
6dB
steps
(at 0.5,
1
and
2
volts),
it
is
easy
to
match
with
any
preamplifier
LINE VOLTAGE
AND
FUSE
CHANGING LINE VOLTAGE
AND
FUSE
To
remove
the
fuse,
turn the
fuse cap located on the line
voltage selector
in
the direction of the
arrow.
Then remove
the
fuse
plug
from the unit.
Put
the
fuse
plug back
so
that the proper line
voltage
marking
can
be
seen
through the cut in the
edge
of
the
plug.
When-
ever
the position
of
the
selector
is
changed, check
the rating
of
the fuse.
A
2-ampere
is
to
be
used
for
either
220V
or
24OY operation and
a
4-ampere fuse
for
110V,
I20V,
130V
operation.
If
the rating
of
the
fuse
is conect,
replace
cap.
FUSE REPLACEMENT
If
the
fuse blows, remove the fuse cap and replace the
fuse
with
a
new
one.
SPECIAL HIGH-RANGE SPEAKER
OUTPUTS
ln
addition
to
the
four
normal.
full-range
speaker
terminals.
a
set
of
high-range speaker
outputs are
provided.
The
OM-800
can
be used
as
an exclusive high-range
amplifier
in
a
multi-amplifier
installation.
PERFECT PROTECTION
OF
OUTPUT
STAGE
TRANSISTORS
AND
SPEAKERS
The
output
transistors are protected
from
damage
(in
the
case
of
overload
or
short-circuits
in
the
speaker
leads)
by
a
dual
system
of
relay and
DC
drift
voltage
detector circuits.
The latter
also guard against possible
speaker damage by
DC
current.
UNIOUE PIONEER EXTERIOR
DESIGN
The
front
panel is
attractive
as
well
as
logically laid
out.
With
its
natural wooden cabinet,
the
OM-800
matches
other
Pioneer
hi-f
i components
perfectly.
cotN
FUSE
CAP FUSE
FUSE
PLUG
SOCKET
Take
oft
the
fuse cap
by turning
it
with
a
coin,
etc.
in the direction indicated
by
the arrow
mark.