Kicker KX350.2 User Manual
2
KX AMPLIFIERS
Introduction
KX350.2 / KX450.2 / KX550.2 / KX850.2
Two Channel Models:
KX.2 Series
Amplifier
Owner’s Manual
Congratulations!
You have just purchased the latest in amplifier
technology to carry the famous KICKER name.
Your KICKER KX series amplifier is designed
and built to give you years of powerful and
trouble-free performance. This installation
manual contains valuable information on how
to get the most out of your new
KX series amplifier.
This is your “fuel for Livin’ Loud
™
”!
Authorized Kicker Dealer:
Purchase Date:
Amplifier Model Number:
Amplifier Serial Number:
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
Attention:
Please record your purchase information in the area
below. We recommend attaching the original sales
receipt to this manual for future reference.
If you require service on this speaker during the
warranty period, you will need to provide this
information and a copy of the original sales receipt to
Kicker for validation of warranty repairs.
ALWAYS KEEP YOUR RECEIPT!
3
KX AMPLIFIERS
Features
Features
Low Impedance Operation Class A/B stable into 2 ohm stereo
or 4 ohm mono loads.
SORT Protection Circuitry (Short circuit, Over-voltage, Reverse
polarity, Thermal) Protects amplifier from accidents and
undesirable operation.
MOSFET Power Supply Provides high efficiency operation.
KickBass Variable bass boost circuit which provides up to 18dB
of boost at 40Hz.
Built-In Variable Crossover 12dB selectable High pass or Low
pass variable from 50-200Hz. User defeatable for full range
operation.
High & Low level inputs Allows connection to various sources
such as: after-market stereo, factory radio, DVD Player, Video
Cassette Player, etc.
PAST (PRE Amp Signal Transfer) Output RCA jacks to pass the
incoming signal to another amplifier or component.
Custom tooled gold plated connectors Assure maximum
power transfer and clamping.
SAMS (Stereo And Mono Simultaneously) Amplifiers will
operate into a bridged mono load and a stereo load at the same
time.
Remote Bass Level Control Dash or center console mountable
for remote fine-tuning of bass output.
EndKaps Cast aluminum, custom, removable covers to
protect and hide all your wiring connections to the amplifier.
Can be prepped and painted any custom color you choose.
Two Year Warranty When purchased from an Authorized
KICKER Dealer.
4
KX AMPLIFIERS
Installation
Mounting
When selecting a location to mount your Kicker amplifier be
sure it is structurally sound and that there are no items behind
the area where the screws will be driven that could be damaged.
Check for wire harnesses, brake lines, fuel lines, gas tanks, etc.
All amplifiers generate heat under normal operation. Be sure to
choose a location that allows adequate ventilation for the
amplifier. Also consider that the air temperature inside an
automobile’s luggage compartment can reach upwards of 140°
Fahrenheit (60° Celsius). An amplifier mounted here may require
additional cooling tactics such as fans or venting ducts to the
passenger compartment to allow cool operation. If possible,
mount the amplifier in the climate-controlled passenger
compartment.
Remember the controls on top of the amplifier will need to be
accessible for adjustment. Keep this in mind as you choose your
amplifier’s mounting location.
Now that you are ready to mount your amplifier, use the
supplied 3mm allen wrench to remove the amplifier EndKap. This
will give you access to the mounting holes in the amplifier and all
wiring connections.
With the EndKap removed, drill four holes using a 7/64”
(11mm) drill bit and use the supplied #8 screws to mount the
amplifier.
Use supplied #8 Mounting Screws
Remove
Remove
Remove
Remove
5
KX AMPLIFIERS
The use of twisted pair interconnects is recommended for all
installations to minimize noise. When routing these cables
through the automobile, try to keep them away from factory
wiring harnesses and other power wiring. If you need to cross
any of this wiring do so at a 90 degree angle to reduce the
potential of alternator noise and electrical interference.
When working with power connections it is always
recommended that you disconnect the battery to prevent
accidents.
Installation
Signal can be input into the amplifier using either the low level
RCA input connections or the high level (speaker level) input
connections. Using the low level RCA connections is the
preferred method. Use the high level inputs only if your source
unit does not have low level RCA type outputs. Connecting to the
amp with either input connection will provide a low level signal at
the output (PAST) RCA jacks.
Wiring
The ground should be connected to the amplifier first before
making any of the other connections. This wire should be as
short as possible (24 inches or less) and connected to a paintand corrosion-free solid metal area of the car’s chassis. Use the
same gauge wire as recommended for the amplifier’s power
connection to the battery. Adding an additional ground wire
between the car battery’s negative post and the car chassis of
this same gauge (or larger) is also recommended.
If you ever need to remove the amplifier from the vehicle after
it has been installed, the ground wire should be the last wire
disconnected from the amplifier--just the opposite as when you
installed it.
A fuse must be installed within 18 inches of the battery to
protect the power wire feeding your amplifier. This fuse should be
of at least the same value used in the amplifier but no higher
than the capacity of the wire. See the chart below for wire size
and fusing recommendations.
Model Fuse Size Wire Size
KX350.2 50A 8 GA
KX450.2 60A 4 GA
KX550.2 70A 4 GA
KX850.2 120A 2 GA
Note: To get the best performance from your new Kicker Amplifier,
we recommend using genuine Kicker Accessories and Wiring.
Speaker
Left +
Left -
Right -
Right +
Outputs
WARNING-Use Only One...Never Both At The Same Time !!!
SOURCE UNIT
RCA
Outputs
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