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FRONT
&
REAR CONNECTIONS
(MA900-MA1200)
FRONT
PANEL
1.
POWER SWITCH
To
turn
the
unit
ON
or
OFF, press
the
upper
or
lower
portion
of
Ihis
button. Before turning
on the
amplifier, check
all
connections
and
turn
down
the
level controls.
A
momentary muting
is
normal
when
turning
the
amplifier
on or
off.
(Caution:
Always
turn
on
your power amplifier last, after
all
your
other
connected
equipment,
and
always turn
off
your power
2.
POWER
LED
INDICATORS
These
LEDs illuminate when
the
power
is
turned "ON".
3.
CLIP
LED
INDICATORS
These
LEDs illuminate
if any
secti
output
are
witnin
3dB of
clipping. Occasional blinking
i
are
acceptable,
but if
they remain
on
more than
interm
should
turn down either
the
power amplifier's level
i
reduce
ihe
output level
of the
preceding component
to
avoid
audible
distortion.
4.
SIGNAL
LED
INDICATORS
These
LEDs illuminate
to
confirm
the
presence
of an
input
signal
greater than
100
mV
at
that channel
of the
amplifier
5.
PROTECT
LED
INDICATORS
is
shorted
,
the
load impedance
is
too
low.
Or
ifthere
is an
internal
and
check
the
output's
connection
to
verify
that
it
is
correct, then
turn
ON the
power again.
6.
LEVEL CONTROLS
These
control
the
level
of
signal
coming into each channel.
The
actual
voltage
attenuation
of the
amplifier
is
shown
in dB.
Turn these
7.
BRIDGE
LED
INDICATORS
These
LEDs illuminate when
the
MODE
is
turned "BRIDGE",
8.
PARALLEL
LED
INDICATORS
These
LEDs illuminate when
the
MODE
is
turned
"PARALLEL".
REAR
PANEL
9.
POWER CONNECTOR
your
power
amplifier.
(CAUTION
:
Always
operate
the
unit
with
the AC
ground
wire
connected
to the
electrical
systerr
10.
FUSE
Fuse holders
for
20A/250V
fuses.
If
these
fuses
cont
blow,
shut
off
the
unit
and
have
it
serviced
by
qualifif
jund)
'iisly.
11.GROUND
LIFT SWITCH
to
eliminate
hum
caused
by
ground loops.
12.
SENSITIVITY SELECTOR SWITCH
The
MA
Series amplifiers offer
3
SENSITIVITY
of
operation:
0.7V
1.0V
&
1.44V.
13.
COMPRESSOR SELECTOR SWITCH
The
MA
Series amplifiers offer
OFF or
COMPRESSOR.
The
compressor only works when
the
1v
sensitivity
is
select
Reference
Manual
Page
13
12


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