THREE.2tm~
shipped
in
the
unbalanced mode,
which
is
often
best,
it
may
be necessary
to
change this depending
upon
the
configura-
tion
of
the
components
you
use.
To
change this, move
the
appropriate jumper
on
the
3-pin header.
12.
Input
Gain
Control:
These potentiometers(aka
"pots") are used
to
increase
the
amount
ofsignal voltage to
your power amplifiers. With these controls you
can
provide
up
to
13
Volts
(peak)
to
your amplifier's inputs. Check
with
your amplifier manufacturer's specs
to
determine exactly
how
much
voltage
they
can really handle. More info
on
this
in
the
section
on
"Level Matching" page
12.
13.
Crossover
Frequency
Selection:
Under
the
top
cover of your THREE.2lies aplug-in module
that
controls
the
crossover frequency. The module selects
the
frequency
that
the
front
and
rear outputs of your
THREE.2
will play
down
to
as
well
as
determining where your subwoofer will begin
playing. The jumperlets you defeat
the
crossover, so if your
system does
not
use a separate subwoofer, all your amplifiers
will get afull range signal.
14.
Illumination
Selection:
These jumpers let you
change
the
backlight illumination
to
Cool Blue
or
Hot
Red.
Given
that
we are acclimated
to
sun
free life
in
the
rainforest,
we
have shipped
the
THREE.2
in
the
Cool Blue mode.
15.
Ground
Isolation
Selector:
This feature allows
you to change the power supply
ground
for different systems.
When
the
THREE.2
is
shipped from
the
factory,
the
selector
is
in
the
fully isolated position (which
is
generally
the
best).
Alas,
not
every manufacturer devotes so
much
time
into
getting its grounds right. Therefore,
we
have
prOVided
other
ground
isolation options
to
help if you have a
ground
loop
noise (alternator whine)
in
your system. Experiment
with
different settings if you
run
into
this
type
of
problem.
To
change
the
settings,
turn
the system off, carefully move
the
black jumper from
the
center two pins (Isolated)
and
move it
to
either
the
top two pins (2000hm)
or
the
bottom
two pins
(Ground).
Now:
If
you
don't
feel comfortable
with
everything you
have read
up
to
this point, run,
don't
walk
to
your nearest
authorized AudioControl dealer
and
let
them
install it.
Life
is
too
short
to
be tearing your hair
out
over your car audio
system.
Owner's Enjoyment
Manual
7
