QUADRAPHONIC QUAD4 User Manual - page 7
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Copyright 2016 Retro Manufacturing, LLC
Quadraphonic is designed to work within a range of 12 volts to
14.5 volts DC. Before connecting any wiring, use a multi-meter to
test the vehicle’s electrical system for adequate power supply.
First, check the voltage at the battery with the ignition in the off
position. The multi-meter should read no less than 12 volts. Next,
check voltage at the battery with the engine running. The multi-
meter should show a reading between 12 and 14.5 volts. If your
vehicle’s electrical system does not fall within these parameters,
consult an auto electrician before proceeding with the installation.
Quadraphonic utilizes a very efficient digital Class D design. For
most installations 8 to 14 gauge power and ground primary wire is
suitable. For longer runs, use thicker gauge wire.
Constant 12 volt (+) Yellow Wire
The constant 12 volt (+) yellow wire should be wired directly to the
vehicle’s positive (+) battery terminal using 8 to 14 gauge primary
wire. Start at the vehicle’s battery, and run the cable back to the
amplifier. Avoid running the wire over engine components and
heater cores. The use of an in-line fuse is recommended. Connect
the fuse holder as close to the battery as possible (within 18-inches
of the battery terminal). This fuse should be no greater than 15
amps. Leave the fuse out until final connections have been made.
Ground (-) Black Wire
Locate a metal area as close to the amplifier as possible
(preferably the floor pan or vehicle chassis). Use a wire brush or
sandpaper to eliminate any paint for a better ground connection.
Secure the ground wire to the vehicle using a bolt, star washer
and nut. See diagram below for close-up of correct ground
connection.
POWER AND GROUND CONNECTIONS
Bolt
Ring Connector
Ground Wire
Star Washer
NOTE: Remove any paint
below the ring connector