Polk Audio Car Amplifier C4004 User Manual

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  
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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  
(M-F, 9-6 EST, US only) or via email [email protected]. Outside the US, call 410-358-3600.  
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.  
22  
23  
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  
Download from Www.Somanuals.com. All Manuals Search And Download.  
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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