Fig. 1 speaker connections, Mosttm configuration, Input sensitivity setting – Adcom GFA-4304 User Manual
Page 6: They are not amplifier volume controls, Ground
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■ From source unit’s “Power Antenna"
or “Remote” lead
To “IGN” or “Turn-On” terminal of
' all Amplifiers, GFIs and processors
To constant +12 Volts (B+ or power
Ground
86 ~ 30
distribution block)
Fig. 1
SPEAKER CONNECTIONS:
ADCOM
uses
gold-plated
speaker
connectors
that
will
accommodate
up
to
8AWG
speaker
wire.
Standard
speaker
wire
gauge
is
12AWG
to
16AWG
and
will
fit
easily
into
the
terminals.
Be
sure
there
are
no
frayed
or
loose
wire
strands
that
may
end
up
touching
other
wires.
Speaker
polarity
is
clearly
marked;
special
attention
must
be
taken
while
connecting
speakers.
Speaker
polarity
is
essential to proper amplifier operation!
Any
number
of
speakers
may
be
used
with
your
ADCOM
Car
Audio
amplifier.
The
“system
impedance”
is
dependent
on
the
wiring
configuration
and
selection
of
speakers.
Although
ADCOM
amplifiers
are
stable
into
loads
of
less
than
'/a
Q,
continuous
operation
into
impedances
lower
than
2
i2
may
eventually
lead
to
thermal
overload,
causing
the
amplifier
to
shut
down
until
it
cools
off.
Your
authorized
ADCOM
Car
Audio
dealer
is
best
able
to
maximize
the
performance
of
your
system
by
calculating
impedance
and
ensuring
the
proper
connection of ail system components.
MoStTM CONFIGURATION:
ADCOM
Car
Audio
amplifiers
are
capable
of
running
stereo
and
mono
configurations
simultaneously.
In
order
to
achieve
this,
one
channel
must
be
inverted
af
the
input.
Inverting
simply
means
making
the
positive
lead
negative,
and
the
negative
lead
positive.
For
consistency,
we
recommend
that
the
“B”
or
"RIGHT”
channel
be
inverted.
In
addition,
the
same
channel’s
output
must
be
inverted
to
complete
the
process.
Inverting
techniques
will
be
discussed
in
sections 2 and 3.
INPUT SENSITIVITY SETTING:
Located
on
the
end
panel,
along
with
the
input
connectors,
are
two
small
openings
that
house
the
input
sensitivity
controls.
THEY
ARE
NOT
AMPLIFIER
VOLUME
CONTROLS!
When
properly
set,
they
match
the
output
of
the
source
unit
with
the
input
of
the
amplifier.
If
you
wish
to
have
the
amplifier