Speaker Connections; Input Sensitivity Setting - Adcom GFA-4302 Owner's Manual

Chassis
Ground
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
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 Va ft, continuous operation into impedances lower than 2 ft 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 all system components.
MoSt™ CONFIGURATION:
ADCOM Car Audio amplifiers
are capable of running stereo and
mono
configurations simultaneously. In order to achieve this, one channel must be
inverted at 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