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Features
Low Impedance Operation Class A/B stable into 2 ohm stereo
or 4 ohm mono loads.
Injection Molded EndKaps custom, removable covers to
protect and hide all your wiring connections to the amplifier.
Can be prepped and painted any custom color you choose.
SORT Protection Circuitry (Short circuit, Over-voltage, Reverse
polarity, Thermal) Protects amplifier from accidents and
undesirable operation.
Two Year Warranty When purchased from an Authorized
KICKER dealer.
MOSFET Power Supply Provides high efficiency operation.
KickBass Variable bass boost circuit which provides up to 12dB
of boost at 40Hz.
Built-In Crossover 12dB selectable High pass or Low pass fixed
at 80Hz. 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.
Custom tooled gold plated connectors Assure maximum
power transfer and clamping.
SAMS (Stereo And Mono Simultaneously) Amplifier will
operate into a bridged mono load and a stereo load at the same
time.
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KX Amplifier
3
Mounting
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.
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.
With the EndKap removed, drill four holes using a 7/64”
(11mm) drill bit and use the supplied #8 screws to mount the
amplifier.
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.
Use supplied #8 Mounting Screws
Remove
Remove
Remove
Remove
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KX Amplifier
4
Wiring
When working with power connections it is always
recommended that you disconnect the battery to prevent
accidents.
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.
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 paint-
and 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.
WARNING-Use Only One...
Never Both At The Same Time!!!
Speaker
Outputs
RCA
Outputs
SOURCE UNIT
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.
RIGHT +
RIGHT
LEFT
LEFT
High-Level
Inputs
-
-
+
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.
Model
Fuse Size Wire Size
15A 8 GA
KX100.2
Note: To get the best performance from your new Kicker Amplifier,
we recommend using genuine Kicker Accessories and Wiring.
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5
KX Amplifier
System Diagrams
BRIDGED OPERATION (MONO)
The following diagrams show the most common configurations
for your Kicker KX series amplifier.
KX.2 series amplifiers are capable of operating into a
minimum impedance of 4 ohms when in bridged operation.
TWO CHANNEL OPERATION (STEREO)
+
These KX amplifiers are capable of operating into a minimum
impedance of 2 ohms per channel in stereo operation. Modern
high performance speakers have a lower DC Resistance than
what used to be available. The Kicker Coaxial and Component
Speakers are rated at four ohms (some DC Resistances may be
as low as 3 ohms) and work with any amplifier designed to oper-
ate at a four ohm load. If you want to use two Kicker Coaxial or
Component Speakers on a single channel of your amplifier wire
the speakers in series. This will improve the sound quality, lower
the total harmonic distortion and lessen the thermal load at the
amplifier. This may prevent an amplifier from shutting down, due
to over-current protection circuitry.
SIGNAL IN
MONO
SPEAKER
_
GROUND
REMOTE
TURN-ON
18"
or less
+12V
FUSE
BATTERY
STEREO AND MONO SIMULTANEOUSLY (SAMS)
KX.2 series amplifiers are capable of operating into a
minimum impedance of 4 ohms mono and 2 ohm stereo
simultaneously with the use of passive crossovers.
LEFT SPEAKER(S)
+
_
SIGNAL IN
LEFT SPEAKER(S)
LOW
PASS
CROSS-
OVER
+
+
HIGH PASS
+
CROSSOVER
_
SIGNAL IN
GROUND
_
GROUND
+
RIGHT SPEAKER(S)
HIGH PASS
_
CROSSOVER
MONO
SPEAKER
REMOTE
TURN-ON
_
REMOTE
TURN-ON
RIGHT SPEAKER(S)
18"
or less
18"
One pair of 4 Ohm Speakers or
two pairs of 4 Ohm Speakers
wired in series is recommended.
2 Ohm minimum impedance
or less
+12V
FUSE
One pair of 4 Ohm Speakers or
two pairs of 4 Ohm Speakers
wired in series is recommended.
2 Ohm minimum impedance
BATTERY
+12V
FUSE
BATTERY
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KX Amplifier
6
Navigation
BEFORE TURNING ON THE SYSTEM FOR THE FIRST TIME,
MAKE SURE THAT THE TWO ROTARY CONTROLS ON THE
SIDE OF THE AMPLIFIER ARE TURNED FULLY
COUNTER-CLOCKWISE!
Your Kicker amplifier has two rotary controls and one switch on
the end panel. These controls ensure the reliability and
performance of the amplifier, so they need to be set correctly.
CROSSOVER SWITCH
GAIN CONTROL
NEVER CHANGE THE CROSSOVER “OFF/HI/LOW” SWITCH
SETTING WITH THE AUDIO SYSTEM ON!
The crossover switch located on the end panel next to the
RCA jacks is for setting the internal crossover. In the OFF posi-
tion the amplifier passes a full-range signal to the speakers. Use
the LO position when connected to a subwoofer.
Remember, the input gain control is not a volume control, it
matches the output of the head unit to the input level of the
amplifier and must be adjusted properly for best performance. All
the way up or down is not necessarily the best. Turn the head
unit up to about 3/4 volume (if the head unit goes to 30, turn it to
23). Next, turn (clockwise) the gain on the amplifier up slowly
until you can hear audible distortion, then turn it down just a little.
The HI position should be selected when connected to
speakers, which you do not want to receive any sub-bass
information..
Crossover Control
Input
&
The crossover is fixed with a 12dB slope at 80Hz high pass or
low pass. This control should be set to match your speaker
requirements. For example, if the amplifier is driving subwoofers,
you will need to set it to low pass.
Bass Boost
0-12 dB@ 40Hz
Low Level
170mV- 5V
High Level
340mV- 10V
Input Gain
KickBass (Bass Boost Control)
The KickBass bass boost control is designed to give you
increased output 0 - 12dB at 40 Hz. The setting for this control is
subjective, however, if you turn it up, you must go back and
adjust the gain control to avoid clipping the amplifier.
Selectable
Crossover Switch
Set @ 80Hz
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KX Amplifier
7
Trouble Shooting
ꢀ Red LED on, no output:
If your amplifier does not appear to be working, check the
obvious things first such as blown fuses, poor or incorrect wiring
connections, incorrect setting of crossover switch and gain
controls, etc.
1.) Amp is very hot.
ꢁThermal protection is engaged. Test for proper
impedance at the speaker terminals (see the diagrams in
this manual for minimum recommended impedance and
multiple speaker wiring suggestions) with a VOM meter.
Also check for adequate airflow around the amplifier.
There are two LEDs on the end panel of your Kicker KX series
amplifier, one green and one red. When the green LED is lit this
indicates the amplifier is turned on and no trouble exists. If the
green LED turns off and the red LED is lit, this indicates that the
protection circuitry (SORT) is engaged.
2.) Amp shuts down only while vehicle is running.
ꢁVoltage protection circuity is engaged. Voltage to the
amplifier is not within the 9-16 volt operating range. Have
the vehicle’s charging and electrical system inspected.
The power indicator on top of the amplifier which illuminates
the model badge follows the same function as the green LED,
indicating the amplifier is turned on and no trouble exists.
3.) Amp will only play at low volume levels.
ꢁShort circuit protection is engaged. Check for speaker
wires shorted to each other or to the vehicle chassis.
Check for damaged speakers, or speaker(s) operating
below the minimum recommended impedance.
ꢀ Green LED off, no output:
With a Volt Ohm Meter (VOM) check:
ꢁ+12 volt power terminal (should read +12V to +16V).
ꢁRemote turn-on terminal (should read +12V to +16V).
ꢁCheck for reversed power and ground connections.
ꢁGround terminal, for proper conductivity.
ꢀ No output from one channel:
ꢁCheck the balance control on source unit.
ꢁCheck RCA & speaker connections for the channel.
ꢁSwap the RCA connections from left to right.
If problem changes sides then you have a bad RCA cable
or source unit problem.
ꢀ Green LED on, no output:
ꢁCheck RCA connections.
ꢁTest speaker outputs with a “known” good speaker.
ꢁSubstitute source unit with a “known” good source unit.
ꢁCheck for a signal in the RCA cable feeding the amplifier
with the “AC” test position selected on the VOM meter.
ꢁSwap speaker connections from left to right.
If problem changes sides then you have a bad speaker
cable, passive crossover network and/or speaker.
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KX Amplifier
8
Trouble Shooting
ꢀ Alternator noise--whining sound with engine’s RPM:
ꢁCheck for damaged RCA cables.
Please Note: Modern high performance speakers have a lower
DC Resistance than what used to be available. The Kicker
Coaxial and Component Speakers are rated at four ohms (some
DC Resistances may be as low as 3 ohms) and work with any
amplifier designed to operate at a four ohm load. If you want to
use two Kicker Coaxial or Component Speakers on a single
channel of your amplifier wire the speakers in series. This will
improve the sound quality, lower the total harmonic distortion and
lessen the thermal load at the amplifier. This may prevent an
amplifier from shutting down, due to over-current protection
circuitry.
ꢁCheck the routing of RCA cables.
ꢁCheck the source unit for proper grounding.
ꢁCheck the gain settings, and turn them down if they are
set too high.
ꢀ Poor stereo image or reduced bass response:
ꢁCheck system phasing by turning the balance control
from left to right. If there is more bass output when
turned to either side, then check your speaker wiring,
passive crossover networks and speaker terminals for
proper positive and negative connections. Reverse a
connection on one channel, if necessary.
CAUTION: When jump starting the vehicle, be sure that
connections made with jumper cables are correct. Improper
connections can result in blown amplifier fuses as well as
the failure of other critical systems in the vehicle.
If you have more questions about the installation and operation
of your new KICKER amplifier, see the Authorized KICKER
Dealer in your area. You may also call our Technical Services
Line at (405) 624-8583 for assistance or visit our website at
NOTE: All specifications and performance figures are subject to change. Please visit the support section at www.kicker.com for the most current information.
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9
KX Amplifier
Performance
Specifications of KX100.2
Height:
MODEL
KX100.2
2.5 inches / 6.35 centimeters
10.125 inches / 25.7 centimeters
20Hz - 20kHz, +/- 0.5dB
RMS Power in Watts, All Channels Driven
@ 14.4V, 4Ω Stereo, < 1% THD+N
@ 2Ω Stereo, < 1% THD+N
Width:
2 x 35
2 x 50
1 x 100
Frequency Response:
Input Sensitivity:
170mV - 5V low level, 340mV -
10V high level
@ 4Ω Mono, < 1% THD+N
Signal-to-Noise Ratio:
Electronic Crossover:
>95dB, a-weighted, re: rated power
@ 12.5V, 4Ω Stereo, 0.085% THD+N
@ 2Ω Stereo, 0.5% THD+N
@ 4Ω Mono, 0.5% THD+N
Length with EndKaps:
2 x 25
2 x 40
1 x 80
High Pass, Low Pass or Bypass,
Fixed @ 80Hz, 12dB/octave
KickBass Boost:
Variable 0 to +12dB boost @ 40Hz
8.84”
(22.45cm)
Model KX100.2
35 x 2 @ 4 ohms, 14.4Vdc, 1% THD,
CEA-2006 (Watts)
Signal to Noise Ratio -84
CEA-2006 (ref: 1W, A-weighted)
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KX Amplifier
10
WHAT IS NOT COVERED?
ELECTRONICS LIMITED WARRANTY
This warranty is valid only if the product is used for the purpose for which it was
designed.
It does not cover:
Kicker warrants this product to be free from defects in material and workmanship
under normal use for a period of THREE (3) MONTHS from date of original
purchase with receipt. When purchased from a Authorized KICKER Dealer it is
warranted for TWO (2) YEARS from date of original purchase with receipt. In all
cases you must have the original receipt! Should service be necessary under this
warranty for any reason due to manufacturing defect or malfunction during the
warranty period, Kicker will repair or replace (at its discretion) the defective
merchandise with equivalent merchandise at no charge. Warranty replacements may
have cosmetic scratches and blemishes. Discontinued products may be replaced
with more current equivalent products.
•
•
•
Damage due to improper installation.
Subsequent damage to other components.
Damage caused by exposure to moisture, excessive heat, chemical cleaners,
and/or UV radiation.
Damage through negligence, misuse, accident or abuse. Repeated returns for
the same damage may be considered abuse.
•
•
•
•
•
•
•
•
•
•
Any cost or expense related to the removal or reinstallation of product.
Speakers damaged due to amplifier clipping or distortion.
Items previously repaired or modified by any unauthorized repair facility.
Return shipping on non-defective items.
Products with tampered or missing barcode labels.
Products returned without a Return Authorization (RMA) number.
Freight Damage.
This warranty is valid only for the original purchaser and is not extended to
owners of the product subsequent to the original purchaser. Any applicable implied
warranties are limited in duration to a period of the express warranty as provided
herein beginning with the date of the original purchase at retail, and no warranties,
whether express or implied, shall apply to this product thereafter. Some states do
not allow limitations on implied warranties, therefore these exclusions may not apply
to you. This warranty gives you specific legal rights; however you may have other
rights that vary from state to state.
The cost of shipping product to Kicker.
Service performed by anyone other than Kicker.
WHAT TO DO IF YOU NEED WARRANTY OR SERVICE
HOW LONG WILL IT TAKE?
Defective merchandise should be returned to your local Authorized Stillwater
Designs (Kicker) Dealer for warranty. Assistance in locating an Authorized Dealer
confirm that a dealer is authorized by asking to see a current authorized dealer
window decal.
Kicker strives to maintain a goal of 72-hour service for all electronics (amplifiers,
crossovers, equalizers, etc.) returns. Delays may be incurred if lack of replacement
inventory or parts is encountered.
INTERNATIONAL WARRANTY
If it becomes necessary for you to return defective merchandise directly to
Stillwater Designs (Kicker), call the Kicker Customer Service Department at
(405)624-8510 for a Return Authorization (RMA) number. Package all defective
items in the original container or in a package that will prevent shipping damage,
and return to
Contact your International Kicker dealer or distributor concerning specific
procedures for your country’s warranty policies.
Stillwater Designs, 5021 North Perkins Road, Stillwater, OK 74075
The RMA number must be clearly marked on the outside of the package. Please
return only defective components. The return of functioning items increases your
return freight charges. Non-defective items received will be returned freight collect.
P.O. Box 459 • Stillwater, Oklahoma 74076 • U.S.A. • 405 624-8510
KICKER drivers are capable of producing sound levels
that can permanently damage your hearing! Turning up a
system to a level that has audible distortion is more
damaging to your ears than listening to an undistorted
system at the same volume level. The threshold of pain
Include a copy of the original receipt with the purchase date clearly visible, and a
“proof-of-purchase” statement listing the Customer’s name, Dealer’s name and
invoice number, and product purchased. Warranty expiration on items without proof-
of-purchase will be determined from type of sale and the manufacturing date code.
Freight must be prepaid; items sent freight collect, or COD, will be refused.
is always an indicator that the sound level is too loud and
WARNING:
may permanently damage your hearing.
Please use common sense when controlling volume!
Failure to follow these steps may void your warranty. Any questions can be
directed to the Kicker Customer Service Department at (405) 624-8510.
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04202005+04KX.2
11
KX Amplifier
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