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Macrom 44.13 - Page 3

Macrom 44.13
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FEATURES
4/3/2
CHANNEL
OPERATION
The
power
of
the
44.13
can
be
subdivided
as
follows:
a)
30
W
RMS
for
each
of
the
four
output
channels
b)
30
W
RMS
on
two
stereo
channels,
and
60
W
RMS
mono
c)
60
W
RMS
on
two
stereo
channels
NO
AMPERAGE
LIMITATIONS
The
amperage
limitation
circuits
incorporated
in
traditional
amplifiers
may
cause
untimely
clipping
and
a
low
transient
response.
The
absence
of
such
circuits
ensures
a
low
T.I.M.
effect,
an
excellent
transient
response
and
a
perfect
sound
quality.
INPUT
MODE
SELECTOR
This
selector
allows
the
user
to
choose
between
2
or
4
input
signals
to
the
amplifier.
^
OUTPUT
MODE
SELECTOR
This
selector
allows
the
user
to
specify
the
number
and
the
configuration
of
the
outputs.
INDEPENDENT
SELECTORS
FOR
CROSSOVER
FREQUENCIES
This
control
allows
for
independent
selection
of
the
Low
Pass
and
High
Pass
crossover
frequencies
at
80
or
120
Hz.
REMOTE
ON/OFF
On
switching
the
head
unit
on
or
off,
the
amplifier
is
automatically
switched
on
or
off.
RCA
INPUT
SENSITIVITY
The
sensitivity
adjustment
of
this
new
amplifier
is
positioned
at
500
mV
for
optimum
coupling
with
other
MACROM
sources.
However,
the
continuous
adjustment
from
100
mV
to
2
V
is
possible
for
easy
coupling
of
other
sources
available
on
the
market.
STATUS
INDICATOR
This
LED
shows
the
current
status
of
the
amplifier:
GREEN
fix:
The
unit
works
perfectly
well.
GREEN
blinking:
The
unit
is
in
the
protection
mode,
something
is
wrong.
WHITE:
The
unit
is
off.
TRIPLE
PROTECTION
Your
unit
is
provided
with
three
different
protection
devices,
as
befits
all
high-end
products:
SOFT
START:
the
amp
powers
gradually
in
order
to
avoid
damage
to
the
speakers
in
case
the
head
unit
is
switched
on
with
the
volume
control
set
to
maximum.
OVERHEATING:
in
case
of
wrong
installation
the
unit
enters
the
protection
mode
before
being
damaged.
As
soon
as
the
temperature
returns
to
normal
values,
the
unit
resumes
normal,
operation.
I
OUTPUT
SHORT
CIRCUIT:
in
case
of
a
short
circuit
at
the
speaker
outlets
the
unit
enters
the
protection
mode
in
orderto
avoid
serious
damage
to
the
end-stage
transistors.
Normal
operation
is
resumed
on
eliminating
the
short
circuit.
FINAL
STAGE
WITH
DISCREET
COMPONENTS
(TRANSISTORS)
MOS-FET
SUPPLY
UNIT
The
high
power
of
the
44.13
is
obtained
by
the
use
of
a
highly
sophisticated
C-MOS-FET
supply
unit
giving
constant
performance,
high
efficiency
in
favour
of
lower
current-consumption.
The
results
are
excellent
performance,
a
linear
and
ample
frequency
response
with
high
dynamics.
CAPACITIVE
/
INDUCTIVE
POWER
SUPPLY
FILTER
This
filter
reduces
radio
frequency
interferences
(RFI)
and
cuts
off
system
noises
(i.e.
the
whine
of
the
alternator).
GOLD-PLATED
RCA-CONNECTORS
GOLD-PLATED
SCREW-TYPE
SPEAKER
OUTPUT
CONNECTIONS
8
INSTALLATION
(Fig.
1,
page
3)
Due
to
the
high
power
of
the
amplifier
a
great
amount
of
heat
is
generated
when
the
unit
is
in
use.
Therefore,
it
is
necessary
to
install
the
unit
in
a
place
with
good
air
circulation
or
otherwise
the
amplifier
will
enter
the
protection
mode.
The
most
suitable
place
for
installation
is
the
boot;
obviously,
the
unit
should
not
be
covered
with
carpet
floor
or
similar.
1.
Place
the
unit
at
the
point
of
installation
and
mark
the
position
of
the
four
securing
screws
provided.
2.
Drill
the
screw
holes.
.
,..
,
3.
Place
the
amplifier
in
the
correct
position
and
secure
it
by
means
of
the
four
tapping
screws
provided.
-
NOTE:
Connect
the
ground
lead
to
a
screw
already
provided
on
the
chassis
of
the
car
(marked
with
^
an
'
in
the
figure).
CONNECTIONS
(Fig.
2,
page
4)
(T)
Input
level
adjustment
of
channels
A-B
(D
RCA-input
connector,
channel
B/F
(right)
(5)
RCA-input
connector,
channel
A/E
(left)
(
4
)
Input
level
adjustment
of
channels
C-D
(
5
)
RCA-
input
connector,
channel
D
(§)
RCA-
input
connector,
channel
C
(
7
)
Output
mode
selector
(5)
Input
mode
selector
(
9
)
High-Pass
crossover
frequency
selector
(the
indication
is
referred
to
-3
dB)
(10)
Low
Pass
crossover
frequency
selector
(the
indication
is
referred
to
-3
dB)
CONNECTIONS
(Fig.
3.
pag.4)
@
Positive
output
terminal,
speaker
A,
or
positive
output
speaker
E
@
Negative
output
terminal,
speaker
A
and
negative
output
speaker
B
@
Positive
output
terminal,
speaker
B,
or
negative
output
speaker
E
®
Positive
output
terminal,
speaker
C,
or
positive
output
speaker
F
@
Negative
output
terminal,
speaker
C,
or
negative
output
speaker
D
16
Positive
output
terminal,
speaker
D,
or
negative
output
speaker
F
@
30
A
fuses
@
Power
supply
terminal
+12
V
to
the
battery
(BATT)
@
Negative
ground
connection
terminal
(GND)
.j20)
Terminal
for
remote
switch-on
(REMOTE)
@
Status
indicator
9

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