O W N E R ’ S
M A N U A L
C400.4 Carbon Series
4/3/2 Channel Amplifier
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All Carbon Series Amplifier Models Feature:
Read This First
• Polk’s Maximum Dynamic Headroom (MDH) Power Supply allows Polk/MOMO Amplifiers to
deliver more instantaneous power peaks, easily driving your speakers during musical peaks. Get
“max headroom” (!) and more power for low impedance loads.
• Each model features fully adjustable electronic crossovers to power any install using any speakers
on the market.
• Each model also features the exclusive Polk/MOMO Pre-EQ Switch, which optimizes the
crossovers for use with Polk/MOMO Ultra High Performance Speakers and Subwoofers so you can
take high performance to whole new level.
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
• 5-Way Smart System Protection (SSP) circuits: Power and Ground-Reversal Protection, Thermal
and Short Protection, Current Overdraw and Low Impedance Protection circuits with auto-
Standby Mode ensure safety, reliability and durability.
• Take steps to protect your car and upholstery from unwanted scratches and punctures.
• Wear proper protective safety gear.
Tools you May Need
• Hideaway Cover Plate conceals the wiring and the “Set It Once” user-adjustable controls for
clean-looking, fiddle-free installs.
• Phillips head screwdriver
• Polk Performance Certificate attests to each individual amp’s Power Rating, and serial number.
• High-density split-dome convection heat sinks with more surface area than standard fins for
extreme heat dissipation and a long, reliable life of high amplification. No need for noisy fans.
• High damping factor improves driver control for tighter, punchier bass.
• Subsonic Filter (15Hz@24dB/octave) for an extra level of speaker protection.
• Remote Subwoofer Level Control available on all models (a stock feature on the mono sub amp).
• Power, Thermal and Short Protection LEDs easily visible on top plate.
• Gold-Plated Screw-Down Capture Terminals for the most secure connections.
• Small footprints for compact installs. Removable End Caps for even smaller footprints: big power
in small packages.
• 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
C400.4 Features:
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.
• May be used as a 4-channel, 3-channel or 2-channel amplifier for maximum adaptability.
Allows bi-amplification of Polk/MOMO component systems or Polk/MOMO Coaxial speakers.
• Variable Low Pass and High Pass crossover filters, 50Hz-5kHz, switchable between 12dB/Octave
and 24dB/Octave: all the control you need to power virtually any type of speaker from tweeters to
component systems to subwoofers.
• Exclusive Polk/MOMO Pre-EQ Switch: One-button preset active crossover and EQ optimization
for the best performance from Polk/MOMO Component systems.
• Active crossover optimized for all 62” component systems.
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Notes About Electrical Installation
Installing Your New Polk Audio Amplifier
• 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.
Before installing your new amplifier, carefully choose the location for the installation. The
amplifier should have at least 2" (5cm) of ventilation space on all sides to allow heat to rise and
dissipate away from the amplifier. Be sure that the power and signal cable connections can enter
and leave the amplifier in a straight line to avoid the risk of kinked wires causing a malfunction.
And try to make your ground connections as short as possible.
• 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.
CAUTION: Remember, your car is filled with hidden stuff: electrical wires, gas lines, vacuum lines,
brake lines and all sorts of other lines. Then there’s that pesky gas tank. You do not want to run
into this stuff while drilling. Make sure you know where all of these dangers are when you’re
installing your amp to avoid puncturing anything.
The amplifier should be protected from exposure to moisture and direct sunlight. The best places
to mount your amplifier are: The floor of the trunk, under the driver’s seat, or on the back of the
rear seat.
• 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 30A fuses. Your “vehicle
protection” fuse should be rated at 60A. 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.
Once you decide where to install your amplifier and have made certain that there is ample
ventilation, air circulation and shelter from unusual hazards, mark the mounting surface using
the amplifier itself as a template. A tip: a strip of masking tape on these surfaces will help make
your marks more visible.
Drill holes using a 1/8" (2.5mm) metal bit at the marked locations and mount the amplifier
using the supplied screws and inserts. Take the time to secure the amplifier solidly so that it does
not come loose in the event of a collision or sudden jolt to the vehicle. A flying amp will hurt you.
DO NOT DRILL HOLES WHILE
THE AMPLIFIER IS IN PLACE
AS A “TEMPLATE.” YOU COULD
EASILY DAMAGE THE AMP’S
ANODIZED COATING BY
DOING THIS.
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Typical Installation
Typical Installation, continued
ALWAYS DISCONNECT YOUR VEHICLE’S BATTERY GROUND BEFORE WORKING WITH YOUR
VEHICLE’S ELECTRICAL SYSTEM.
For the ground connection, also use the largest gauge cable available. Connect to the terminal
marked GND and then connect this cable directly to your car’s chassis. Keep the length of the
GND connection as short as possible, ideally under 6", to avoid ground loops and engine noise
hum problems. Make certain that the ground point is directly connected to the car’s metal
chassis, with no dirt or paint getting in the way of a clean metal-to-metal connection.
ALWAYS BE AWARE OF THE LOCATION OF HIDDEN WIRES, CABLES AND FLUID LINES BEFORE
DRILLING HOLES OR MAKING CONNECTIONS.
1. DISCONNECT the negative battery post connection and secure the disconnected cable away from
the battery to prevent “accidental re-connection” during the installation process. This is not an
option. Just do it, Ben Franklin.
7. SECURELY install the amplifier in your chosen location.
Take the time to secure the amplifier solidly so that it does not come loose in the event of a
collision or sudden jolt to the vehicle. Warning: Low Flying Amp!
2. RUN power wire from the engine compartment to the amplifier installation location, taking care
to route it in such a way that it will not be damaged and will not interfere with vehicle operation.
8. CONNECT the positive and negative power wires to the amplifier. A fuse near the amplifier
is not necessary.
Your amp will need to draw large levels of current, so use the largest gauge power/ground cable
available; we recommend at least 8 AWG. (See your authorized Polk AutoSound Dealer for power
cables and wire connectors.) Don’t forget to 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 30A fuses. Your “vehicle protection” fuse should be rated at 60A. (See your
authorized Polk AutoSound Dealer for professional advice on fuses and circuit breakers.)
9. CONNECT the remote turn-on wire to the amplifier.
10. CONNECT the RCA signal input cables to the amplifier.
11. CONNECT the speaker wires to the amplifier.
Make sure to use speaker wire of at least 16 gauge or thicker.
Be certain to maintain correct polarity. One of the terminals on the rear of your speaker is posi-
tive (+) and the other is negative (-). Make certain that you connect the wire from the positive
(+) terminal of your amplifier to the positive (+) terminal on your speaker, and the wire from
the negative (-) terminal of your amplifier to the negative (-) terminal on your speaker. Most
speaker wire has some indicator (color code, ribbing, or printing) on one of the two wires to
help you maintain consistency.
3. CONNECT power wire with EMPTY fuse holder to the positive battery post. Do not install the
fuse itself until the power wire has been connected to the amplifier.
4. RUN signal cables and remote turn-on wire from the head unit to the amplifier mounting
location.
Use high quality RCA cables for signal connections. The remote turn-on connection allows the
amplifier to be turned on and off with the power control of your head unit. Use smaller cable
here, 16 gauge is probably best. (See your authorized Polk AutoSound Dealer for professional
advice on cables and connectors.)
Make certain that no bare wire ends touch each other. Such contact could result in an electri-
cal short and cause your head unit or amplifier to turn off or malfunction.
12. Carefully review the amplifier’s control settings to make sure that they are set according to the
needs of your system.
Make sure that the cables for power and audio 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 an audio 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.
13. Now install the power wire fuse and reconnect the negative battery post terminal. (See your
authorized Polk AutoSound Dealer for professional advice on fuses and circuit breakers.)
14. Turn on the head unit at low level to check that the amplifier is configured correctly. Resist the
temptation—RESIST!—to crank it up until you have verified the control settings and made
your fine tunings.
5. RUN speaker wire from the speakers to the amplifier installation location.
Measure enough wire to reach from your amplifier to each speaker or inline crossover, plus an
additional 12" to allow moving the speakers or equipment without having to disconnect the wires.
15. Make the necessary adjustments to the input sensitivity to obtain the right overall output and
the desired balance between the two pairs of channels and other amps in your system.
6. FIND a good solid metal grounding point close to the amplifier and connect the negative power
wire to it.
ADDITIONAL STEPS AND DIFFERENT PROCEDURES MAY BE REQUIRED IN SOME APPLICA-
TIONS. IF YOU HAVE ANY QUESTIONS, PLEASE CONTACT YOUR AUTHORIZED POLK AUDIO
AUTOSOUND DEALER OR POLK AUDIO CUSTOMER SERVICE.
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Wire Routing Options
L E A D
T R U N - O N
R E M O T E
L E A D
G R O U N D
L E A D
B A T T E R Y
R
For Flush Mount installations (where amp sits directly on solid surface),
route wiring through side vents of end caps BEFORE wiring into the amp.
R e a r
F r o n t
R e a r
F r o n t
R
For Stealth installations, route wiring down through bottom opening under removeable plate.
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Detailed Adjustments for the Amp Panel
Detailed Adjustments for the Amp Panel continued
midrange and high frequencies from the subwoofer. If it
amplifier will be used to drive full range speakers with no
subwoofer in the system. The full frequency bandwidth
will be output to the speakers with no high or low
frequency attenuation. C] set to HP position when the
amplifier is used to drive full range speakers with a sub-
woofer in the system. The frequencies below the crossover
point will be attenuated at 12dB/Octave or 24/Octave.
LOW position, as the most popular head unit output con-
1 REMOTE BASS GAIN MODULE JACK
Accepts telephone jack input connection from the remote
bass gain module (only works on REAR channel when
crossover is set to LP). Set GAIN (8) to max when using
the remote. Remote bass gain module is sold separately.
See your Authorized Polk AutoSound Dealer or visit the
webstore at polkaudio.com.
is set too high, you’ll hear voices and other midrange
sounds coming from the subwoofer and the bass will
seem to come only from the rear of the vehicle. If it is set
too low, you’ll miss the “kidney punch” kick of the mid-
bass. Set the control to 80Hz – 120Hz and adjust it by ear
from there.
nections are low voltage. To use HIGH level speaker wire
inputs, simply splice an RCA connector onto your speaker
wire, then set this switch to HIGH. If you have a higher
output head unit, a 4V or 8V head unit output (see your
head unit’s owner’s manual), set this selector to HIGH
because you will have high voltage coming into the amp.
When the CROSSOVER MODE is set to HP it filters out
bass from your midrange or full range speakers. That
takes strain off the speakers, allowing them to play
louder with less distortion. Set the Frequency Control
to around 80Hz – 100Hz. If it sounds like you’re losing
too much mid-bass punch, turn the Frequency Control
down to 50Hz.
6 POLK/MOMO PRE-EQ SWITCH
One-button preset crossover and EQ optimization for
the best performance from Polk/MOMO Component
systems. Using this will override all other
crossover settings.
8 GAIN ADJUSTMENT
2 FREQUENCY SLOPE TOGGLE
Begin with gain set at about the 11 o’clock position.
Once all settings are made, turn this setting up until your
source JUST BEGINS to distort, then back off slightly to
cut distortion and operate at optimum gain. The voltage
range for the RCA audio inputs is 200mV to 8V. Anything
greater may cause audible distortion and/or damage
to the amplifier.
Use this switch to determine the grade of the frequency
slope over which the amplifier "rolls off" the frequencies
for better blending between highs and lows. Choose either
steep crossover slope (24dB/Octave) or a more gentle
crossover slope (12dB/Octave).
7 INPUT TYPE SELECTOR
This switch allows you to select the type of connection
being made. The default for the average head unit is the
3 FREQUENCY MULTIPLICATION SWITCH
Choose "x1" for lower crossover frequencies(50 to
500Hz), choose “x10” and the crossover frequency will
be multiplied by 10 (500Hz to 5kHz).
Most of the time you should set the LP and HP filters to
around the same frequency setting, but always let your
ears be the final judge. Experiment and go with the
settings that sound best.
4 CROSSOVER FREQUENCY
ADJUSTMENT
When the CROSSOVER MODE is set to OFF, the
Frequency Control does nothing. When the Pre EQ
switch is on, the Frequency Control does nothing (the
crossovers are preset by the Pre EQ feature).
When the FREQUENCY MULTIPLICATION SWITCH is set
to “x1,” the crossover frequency can be adjusted between
50 to 500Hz. When the FREQUENCY MULTIPLICATION
SWITCH is set to “x10,” the crossover frequency can be
adjusted between 500Hz to 5kHz.
Most applications of the four channel amp require two sets of RCA inputs (Front and Rear). If your head unit
only has one RCA output, you may use a short RCA cable to connect from PRE-OUT Front to INPUT Rear as
shown in the diagram. You may also use a Y-adapter to split the signal.
5 CROSSOVER MODE SELECTOR SWITCH
A] set to the LP position when the amplifier is used to
drive a woofer or subwoofer. The frequencies above the
crossover point will be attenuated at 12dB/Octave or
24/Octave. B] set to OFF (“Full Pass”) position when the
Single output
The crossover frequency adjustment filters out frequen-
cies that you don't want the speaker to reproduce. When
the CROSOVER MODE is set to LP it filters out the
from headunit
Single output
from headunit
RCA "Y"
adapters
1
2
3
4
6
7
8
5
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
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Power Connection Details
Sketch Your Custom Install Configuration
for Future Reference Here:
Before installing your amplifier, disconnect the negative (ground) wire from the vehicle’s battery
and secure it away from the battery. This will prevent accidental damage to the system. And to
yourself as well.
This amplifier’s “+12 VDC” and “GROUND” (chassis ground) connections are designed to accept 4
AWG power wire or smaller. We recommend a power wire of at least 8 AWG. Bigger power wire means
more room for more power to flow.
To connect the power wires to the amplifier, first back out the set screw on the top of the amplifier
using the included hex wrench. Strip 1/2 inch (12mm) of insulation from the end of each wire and
insert the bare wire into the receptacle on the front panel of the amplifier, seating it firmly so that no
bare wire is exposed. While holding the wire in place, tighten the set screw firmly.
The ground connection should be made using the same gauge wire as the power connection (since
they must carry the same amount of power) and should be kept as short as possible. Make a direct
connection between the Ground Terminal of the amplifier (“GROUND”) and the chassis of the vehi-
cle. Metal must connect to metal. Be sure that all body paint, undercoating, insulation or obstruc-
tion is removed from the area of the ground connection to ensure a direct and secure ground con-
nection. Use a “star washer” to better “lock down” the ground connection.
This amplifier uses a conventional +12V remote turn-on lead, typically controlled by the head unit’s
remote turn-on output. The amp will turn on when the +12V is present at its “REMOTE” input and
turn off when the +12V is switched off. If the head unit does not have a dedicated remote turn-on
output, the amplifier’s turn-on lead can be connected to +12V via a switch that derives power from
an ignition switch circuit.
Any power cables run through metal barriers or firewalls must be protected with a high quality rub-
ber grommet to prevent damage to the insulation of the wire. Failure to do so may result in a dan-
gerous short circuit. Grommet. Grommet grommet. What a great word. Grommet. Say it with me:
“Grommet.”
Remote Bass Gain Module
This amp features an optional Remote Bass Gain
Module connection. The Remote Bass Gain Module is
standard with the MONO model, and available separate-
ly for the 2- and 4-channel models. It uses standard
telephone wire and telephone jack connectors. To
connect the Remote Bass Gain Module to the amplifier,
simply insert the telephone jack into place on the amp’s
control plate. Install the remote module within easy
reach on or under your dash.
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C400.4 Specifications
Power Output: ...................................................RMS Continuous Power
Protect Your Hearing!
Now that you’ve got Polk Audio equipment in your car you’re a valued member of the Polk Audio
family. We want you, and your hearing, to be around for a long, long time. We urge you to practice
restraint in the operation of this product so as not to damage your hearing (and that of other
people in your car, or in your neighborhood). Studies have shown that continuous exposure to
high sound pressure levels can lead to permanent irreparable hearing loss. And then you’d be
no good to us. This and all other high-power amplifiers are capable of easily producing sound
pressure levels that can be dangerous.
(at 14.4V at the input terminals, 20Hz - 20kHz)
Per Channel into 4 Ohms (0.1% THD+N) .......75W
Per Channel into 2 Ohms (1% THD+N) ..........100W
Bridged into 4 Ohms (1% THD+N) ..................200W
Total Dynamic Power (at 1kHz).......................975W
Frequency Response (-3dB Points)...................<15Hz to 45kHz
Signal-to-Noise (Referenced to rated power) ...>105dBA
Channel Crosstalk..............................................>55dB
Input Sensitivity.................................................200mV to 8.0V
Remote Gain Control.........................................0 to -30dB
Input Impedance...............................................>10k Ohms
Speaker Impedance ...........................................>2 Ohms Stereo
...........................................................................>4 Ohms Bridged
Power Requirement...........................................10V to 16V DC Negative Ground
Please use common sense in the operation of this product. Limit your exposure to continuous high
volume levels, and consider operating your audio system while driving in a manner that still
allows you to hear necessary outside noises like sirens and horns.
Crossover Filters
Filter Function...................................................High Pass, Low Pass, Off
Frequency...........................................................50Hz to 5000Hz
Slope...................................................................12 or 24dB/Octave
Subsonic Filter...................................................24dB/Octave at 15Hz
Technical Assistance or Service
If, after following the hookup directions, you experience difficulty, please double-check all wire
connections. Should you isolate the problem to the amplifier, contact the authorized Polk Audio
dealer where you made your purchase, or contact Polk Audio Customer Service 800-377-7655
Pre-EQ
Front
Filter Function ..............................................High Pass
Corner Frequency..........................................4.0kHz
Slope..............................................................12dB/Octave
Filter Function ..............................................Shelf
Corner Frequency..........................................+2dB at 12.1kHz
Bandwidth.....................................................6dB/Octave
More detailed information—including audio how-to articles, FAQs, and online manuals—is
There are no user serviceable parts or fuses inside the amplifier. The unique nature of the circuitry
in the Polk Audio Carbon Series Amplifiers requires specially trained service personnel. Do not
attempt to service this amplifier yourself or through unauthorized repair facilities. This will not
only void the warranty, but may result in the creation of more problems within your amplifier.
Rear
Filter Function ..............................................High Pass
Corner Frequency..........................................38.4Hz
Slope..............................................................12dB/Octave
Filter Function ..............................................Low Pass
Corner Frequency..........................................2.82kHz
Slope..............................................................18dB/Octave
Dimensions (L x W x H)
Inches.................................................................16 x 9.75 x 2.5
Centimeters........................................................40.64 x 24.8 x 6.35
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Polk/MOMO Series Limited Warranty
Polk Audio, Inc., warrants to the original retail purchaser
only. This warranty will terminate automatically prior to its
stated expiration if the original retail purchaser sells or
transfers the Product to any other party.
This warranty does not include service or parts to repair
damage caused by accident, disaster, misuse, abuse,
negligence, inadequate packing or shipping procedures,
commercial use, voltage inputs in excess of the rated
maximum of the unit, cosmetic appearance of cabinetry
not directly attributable to defect in materials or workman-
ship, or service, repair, or modification of the Product
which has not been authorized or approved by Polk Audio.
This warranty shall terminate if the Serial number on the
Product has been removed, tampered with or defaced.
Polk Audio, Inc., warrants, to the original retail purchaser
only, that the LOUDSPEAKER(S), PASSIVE CROSSOVER
COMPONENT(S) and ENCLOSURE on this Polk Audio
Loudspeaker Product will be free from defects in material
and workmanship for a period of one (1) year from the
date of original retail purchase from a Polk Audio
Authorized Dealer.
This warranty is in lieu of all other expressed Warranties.
If this Product is defective in materials or workmanship as
warranted above, your sole remedy shall be repair or replace-
ment as provided above. In no event will Polk Audio, Inc. be
liable to you for any incidental or consequential damages
arising out of the use or inability to use the Product, even if
Polk Audio, Inc. or a Polk Audio Authorized Dealer has been
advised of the possibility of such damages, or for any claim
by any other party. Some states do not allow the exclusion or
limitation of consequential damages, so the above limitation
and exclusion may not apply to you.
Furthermore, Polk Audio, Inc., warrants, to the original
retail purchaser only, that any AMPLIFIER OR OTHER
ELECTRONIC COMPONENT will be free from defects in
material and workmanship for a period of one (1) year
(extended to two years when professionally installed) from
the date of original retail purchase from a Polk Audio
Authorized Dealer.
To allow Polk Audio to offer the best possible warranty
service, please register your new product online at:
service 800-377-7655 in the USA and Canada (outside
the USA: 410-358-3600) within ten (10) days of the
date of original purchase. Be sure to keep your original
purchase receipt.
All implied warranties on this Product are limited to the
duration of this expressed Warranty. Some states do not
allow limitation on how long an implied Warranty lasts, so
the above limitations may not apply to you. This Warranty
gives you specific legal rights, and you also may have other
rights which vary from state to state.
Defective Products must be shipped, together with proof of
purchase, prepaid insured to the Polk Audio Authorized
Dealer from whom you purchased the Product, or to the
Factory at 2550 Britannia Boulevard, Suite A, San Diego,
California 92154. Products must be shipped in the original
shipping container or its equivalent; in any case the risk of
loss or damage in transit is to be borne by you. If upon
examination at the Factory or Polk Audio Authorized Dealer
it is determined that the unit was defective in materials or
workmanship at any time during this Warranty period,
Polk Audio or the Polk Audio Authorized Dealer will, at
its option, repair or replace this Product at no additional
charge, except as set forth below. All replaced parts and
Products become the property of Polk Audio. Products
replaced or repaired under this warranty will be returned
to you, within a reasonable time, freight prepaid.
This Warranty applies only to Products purchased in
Canada, the United States of America, its possessions, and
U.S. and NATO armed forces exchanges and audio clubs.
The Warranty terms and conditions applicable to Products
purchased in other countries are available from the Polk
Audio Authorized Distributors in such countries.
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W W W . P O L K A U D I O . C O M / A M P S
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
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5601 Metro Drive
Baltimore, Maryland 21215
(800) 377-7655
Contact Polk Audio Customer Service 800-377-7655 (M-F, 9-6 EST, US only)
or via email [email protected]. Outside the US, call 410-358-3600.
“Polk,” “Polk Audio,” “The Speaker Specialists” and “Dynamic Balance” are registered
trademarks of Polk Investment Corporation used under license by Polk Audio Incorporated.
“MOMO” is a registered trademark of MOMO Design, Italy.
RM0658-2
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