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Pioneer GM-4000 User Manual

Pioneer GM-4000
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Features
Controls
and
their
Use
*
A
DC/DC
converter
circuit
with
pulse
width
modulation
(PWM),
2
three-stage,
Darlington,
single-ended
push-pull
(SEPP)
circuit,
and
a
non-switching
circuit
that
eliminates
switching
distortion
are
used
to
give
a
high
output
power
of
200
W
+
200
W
{stereo}
or
400
W
(mono)
with
a
low
harmonic
distortion
of
0.002%
(at
1kHz
and
40
W
output).
e
High-quality
parts,
such
as
gold-plated
terminals,
offering
high
conductivity,
and
audio
capacitors,
are
used
to
assure
high
sound
quality.
»*
Compulsory
fan
cooling,
giving
high
cooling
efficiency,
is
used
to
produce
a
new,
compact
design
with
no
radiation
fins.
«
The
bridgeable
function
allows
switching
between
two
channel
mode
(stereo)
and
single-channel
mode
(mono)
by
simply
operat-
ing
the
mode
select
switch.
*
The
tow
boost
switch
enhances
low-frequency
sounds.
»
The
low-pass
filter
(LPF)
switch
allows
the
amplifier
to
be
used
as
a
power
amplifier
for
sub-woofers,
«
The
auto
input
selector
makes
it
easy
to
connect
the
amplifier
to
a
car
stereo
with
RCA
pin
jacks
or
one
with
DIN
sockets.
important
The
serial
number
of
this
device
is
located
on
the
bottom
of
the
unit.
For
your
own
security
and
convenience,
be
sure
to
record
the
serial
number
on
the
enclosed
warranty
card,
Keep
it
handy
for
future
ref-
erence.
@
Input
Level
Control
if
the
output
is
low
even
when
the
volume
of
the
car
stereo
is
turned
up,
turn
this
control
clockwise.
If
there
is
distortion
when
the
volume
of
the
car
stereo
is
turned
up,
turn
this
control
counter-clockwise.
@
Low
Boost
Switch
Press
this
switch
to
increase
the
volume
of
sounds
in
the
low-
frequency
range
if
your
car
audio
system
does
not.
reproduce
enough
bass
sounds.
This
is
effective
when
the
amplifier
is
used
to
drive
a
sub-woofer.
»
lf
there
are
no
fow-frequency
sounds
in
the
music
you
are
listening
to,
or
if
you
are
using
relatively
small
speakers,
this
switch
may
not
make
much
dif-
ference.
eorseemaarned
et

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Pioneer GM-4000 Specifications

General IconGeneral
BrandPioneer
ModelGM-4000
CategoryAmplifier
LanguageEnglish

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