W W W . P O L K A U D I O . C O M / A M P S
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P O L K / M O M O : C H A M P I O N S H I P P E R F O R M A N C E
Notes About Electrical Installation
• ALWAYS DISCONNECT YOUR VEHICLE’S BATTERY GROUND BEFORE WORKING WITH YOUR
VEHICLE’S ELECTRICAL SYSTEM.
• This amplifier is designed for use in vehicles with 12-volt, negative-ground electrical systems. Use
of this product in vehicles with positive-ground, or with voltages other than 12 volts, may result in
damage to the product and the system, and will void the warranty. This product is NOT certified or
approved for use in aircraft.
• We recommend that you carefully design your car audio system before you begin a major installa-
tion like this. Draw it all out. Make sure that the cables for power and signal are not on the same
side of the vehicle and that they do not cross each other; this will help reduce any noise that may
radiate from the power cable to the signal cable. If a signal cable is too close to a power cable, it
may pick up the magnetic field generated by the power cable, which could lead to a loss of quality
in your signal.
• Do not run wires under your vehicle or outside your vehicle.
• For best possible performance, give your power the widest possible throughway. Use the largest
gauge power/ground cable available; we recommend at least 8 AWG. Use the largest gauge con-
nectors, as well: barrier spades at the amp and terminal rings to the battery. See your authorized
Polk AutoSound Dealer for power cables and wire connectors.
• Protect your vehicle with a circuit breaker or fuse placed no more than 12" (30cm) from your
battery. This circuit breaker or fuse should be no greater than the fuse(s) of your amplifier for
optimal protection. For example, this Polk Audio Amplifier has two 25A fuses. Your “vehicle pro-
tection” fuse should be rated at 50A. See your authorized Polk AutoSound Dealer for professional
advice on fuses and circuit breakers.
• Make your ground wires as short as possible to avoid Ground Loop engine noise and hum
from interfering with your system. When using multiple components, ground everything at the
same point.
• ALWAYS DISCONNECT YOUR VEHICLE’S BATTERY GROUND BEFORE WORKING WITH YOUR
VEHICLE’S ELECTRICAL SYSTEM.
Read This First
Installing a car audio system is a serious project. If you have any doubts about your ability to
execute any of the installation steps found in this manual, save yourself a lot of grief and contact
a professional installer. Your Polk Audio dealer is a good place to find one. If you intend to do the
installation yourself we assume you possess some skill in the proper use of hand and power tools.
No matter how much installation experience you have, we recommend that you…
• Read this manual thoroughly before you begin
• Plan your installation carefully
• Allow enough time to complete the installation without rushing
• Take steps to protect your car and upholstery from unwanted scratches and punctures.
• Wear proper protective safety gear.
Tools you May Need
• Phillips head screwdriver
• Panel pry tool
• Electric drill and 3/16" and 1/8" drill bits
• Permanent ink marker or pencil
• Solderless, crimp-on connectors and a crimping tool
• Safety glasses
• Wire strippers and cutters
• Electrical tape
• Grommets for passing wires through metal car walls
• Amplifier Power Wire Kit (available at your authorized Polk Audio Dealer)
Safe Limits of Operation
Your Polk Audio AutoSound equipment is constructed of the highest quality materials for years of
trouble-free performance. You should be aware that damage to loudspeakers can occur when an
amplifier, regardless of its wattage, is made to play at higher listening levels than its power can
clearly produce. Operation at this level can result in very high levels of audible distortion originat-
ing in the amplifier, which can add a harsh, gritty sound to your listening material. If you hear
distortion—turn it down or risk damaging your speakers. You can damage any speaker, regardless
of power rating, if you push any amplifier, regardless of power rating, to the point of distortion.
