Owner's Manual
Setu
And
Ad"ustment
Gain
The
gain
control
is
NOT
a
volume
control.
The
gain
control
adjusts
the
amount
of
signal
required
to
drive
the
amplifier
to
full
output.
With
the
gain
at
full
clockwise
rotation,
less
signal
voltage
is
required
to
drive
the
amp
to
full
output.
With
the
gain
at
full
counter
clockwise
rotation,
more
signal
voltage
is
required
to
drive
the
amp
to
full
output.
For
optimal
performance,
set
the
gain
control
to
minimum
High
Pass
Filter
[HPF)
The
high
pass
crossover/filter
is
designed
to
remove
low
frequency
information
from
a
speaker.
This
is
generally
used
to
protect
smaller
devices
from
trying
to
reproduce
low
frequency
information
that
might
damage
them.
The
crossover
frequency
is
adjustable
from
50
Hz
to
1KHz
and
uses
12
dB
per
octave
slope.
To
engage
the
HPF
simply
slide
the
switch
to
the
position
on
the
marked
HPF.
Crossover
frequency
selection
is
made
by
rotating
the
dial:
clockwise
raises
the
frequency,
counter-clockwise
lowers
the
frequency.
Most
mid-bass
or
midrange
drivers
should
be
set
between
80
and
LJOO
Hz
depending
on
how
high
the
subwoofer[s]
plays.
For
mid-range
drivers
that
are
5~.,
or
smaller
we
suggest
setting
the
HPF
to
120Hz.
The
HPF
can
also
be
combined
with
passive
crossovers
on
a
separate
or
coaxial
speaker
set
to
provide
low
frequency
protection
to
the
midrange
driver,
or
to
form
band-pass
filter
for
a
midrange
speaker
already
using
a
passive
low-pass
filter.
Low
Pass
Filter
[LPFJ
The
Lowpass
crossover/filter
is
designed
to
remove
high
frequency
information
from
a
speaker.
This
is
generally
used
to
prevent
mid
bass
speakers
or
subwoofers
from
trying
to
reproduce
mid
and
high
frequency
information
that
they
are
not
designed
to
reproduce.
The
crossover
frequency
is
adjustable
from
30Hz
to
250Hz
and
uses
a
12dB
per
octave
slope.
To
engage
the
LPF
slide
the
switch
to
the
position
marked
LPF.
Frequency
selection
is
made
by
rotating
the
dial:
clockwise
raises
the
frequency
and
counter
clockwise
lowers
the
frequency.
Most
subwoofers
should
be
set
between
80Hz
and
100Hz
depending
on
how
low
the
mid-bass
or
midrange
drivers
are
capable
of
playing.
Full
Range
[MXA850.5M
&
MXAqao.qM)
Sliding
the
selector
switch
to
this
position
turns
off
all
crossovers
and
allows
a
full
range
signal
to
pass.
The
flat
position
should
be
selected
when
using
outboard
electronic
crossovers.
Bass
Boost
[q5Hzl
Boost
should
be
used
with
discretion,
keeping
in
mind
that
electronically
enhanced
boost
places
an
additional
load
on
the
amplifier
and
the
speakers
they
are
connected
to.
This
control
is
fully
variable
from
0
-12dB.
Sub
Sonic
Filter
[MXA85D.lm
&
MXA&DD.lM)
This
filter
is
fully
variable
from
15Hz-50Hz
and
removes
unwanted
frequencies
below
the
frequency
selection.
This
filter
is
most
useful
with
subwoofers
loaded
in
a
ported
enclosure,
which
helps
prevent
unloading
[rapid
loss
of
power
handling
below
the
port
tuned
frequency].
End
Panel
Connections
Use
only
~~MXA"
Remotes
for
this
amplifier
model.
The
a~ustment
will
increase/decrease
the
output
level
of
the
amplifier.
The
remote
controller
operates
the
level
ol
the
MXA600.1M
and
only
the
subwoofer
channel
of
the
MXA850.5M.
Input
Mode
Switch:
[MXA850.5M]
Place
the
switch
on
the
number
of
audio
inputs
being
used.
F =
FRONT
R=REAR
S=SUB.
6