KX300.4 / KX600.4 / KX800.4
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 trou- ble-free performance. This installation manual contains valuable information on how to get the most out of your new KX series amplifier. Thanks for buying KICKER. Enjoy!
KX Amplifier Features
Low Impedance Operation 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 undesired operation.
MOSFET Power Supply Provides high efficiency operation.
KickBass Variable bass boost circuit which provides up to 18 dB of boost at 40 Hz.
Built-In Variable Crossover 12 dB High pass or Low pass variable from 50200 Hz. Defeatable for full range operation.
High & Low level inputs Allows connection to various sources such as: aftermarket stereo, factory radio, DVD Player, Video Cassette Player, etc..
Custom tooled gold plated connectors Assure maximum power transfer and damping.
SAMS (Stereo And Mono Simultaneously) Amplifier will operate into a bridged mono load and a stereo load at the same time.
Remote Bass Level Control Dash mounted for maximum control. (Not included in the KX300.4)
Two Year Warranty When purchased from and installed by an Authorized KICKER Dealer.
Mounting Instructions
When selecting a location to mount your Kicker amplifier be sure it is structurally sound and that there are no items behind the area that could be damaged by the screws. Check for brake lines, fuel lines, gas tanks, or wiring harnesses 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 automobiles trunk can reach upwards of 140 degrees fahrenheit. An amplifier mounted here may require additional cooling tactics such as fans or venting to allow cool operation. If possible, mounting the amp in the passenger compartment will allow cooler operation.
Remember that the controls on top of the amp will need to be accessible for adjustment later. 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 shroud. This will give you access to the mounting holes in the amplifier and all wiring connections.
REMOVE |
REMOVE |
REMOVE |
REMOVE |
With the shroud removed, you now have access to the four mounting holes in the mounting feet and all wiring connections. Drill 4 holes using a 7/64” drill bit and use the supplied #8 screws to mount the amplifier.
2
Wiring Instructions
Signal can be input into the amplifier using either the low level RCA input connections or the high level (speaker level) connections. Using the low level RCA connections is the preferred method. Use the high level inputs only if your head unit does not have low level RCA type outputs.
LEFT +
LEFT -
RIGHT -
RIGHT +
LEFT +
LEFT -
RIGHT -
RIGHT +
AMP 1
AMP 2
HI-LEVEL INPUT |
L |
R |
L |
R |
|
Amp 1 |
Amp 2 |
|
|
|
|
+ - - + |
+ - - + |
|
Amp 1 |
|
Amp 2 |
L+ L - R + |
R - |
AMP 1 |
REMOTE BASS |
BRIDGE |
|
SOURCE UNIT
OFF HI |
PASS |
PASS |
PASS PASS |
|
|
LO |
OFF HI |
LO |
|
AMP 1 |
|
AMP 2 |
||
L+ L - |
|
R + |
R - |
|
Amp 2
BRIDGE
WARNING-Use Only
High Or Low Level
NOT...Both!!!
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 noise problems.
When working with power connections it is always recommended that you disconnect the battery to prevent accidents.
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/corrosion free solid metal area of the car’s chassis. Use the same gauge wire as recommended for the amplifiers 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 amp 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 |
KX-300.4 |
40A |
8 GA |
KX-600.4 |
80A |
4 GA |
KX-800.4 |
120A |
2 GA |
3
RCA Dummy Plugs
When using both sets of High Level inputs, RCA dummy plugs must be inserted into the AMP 2 inputs in order for the fader to work properly. If the amplifier is being used in any other configuration do not use the RCA dummy plugs! If you do not have dummy plugs available, simply using raw RCA ends or cutting the ends off of existing cables will be sufficient. See the Amplifier Technical manual for more information. DO NOT USE SHORTING PLUGS!
LEFT + |
Speaker |
|
LEFT - |
||
RIGHT - |
Outputs |
|
RIGHT + |
||
|
||
LEFT + |
SOURCE UNIT |
|
LEFT |
- |
RIGHT -
RIGHT +
AMP 1
AMP 2
HI-LEVEL INPUT |
L |
R |
L |
R |
|
Amp 1 |
Amp 2 |
|
|
|
|
+ - - + |
+ - - + |
|
Amp 1 |
|
Amp 2 |
L+ L - R + R -
AMP 1
BRIDGE
OFF HI |
PASS |
PASS |
PASS |
PASS |
LO |
OFF HI |
LO |
|
|
AMP 1 |
AMP 2 |
|
||
L+ L - |
R + |
R - |
|
|
|
Amp 2 |
|
|
|
|
BRIDGE |
|
|
|
RCA Dummy Plugs
System Diagrams
The following diagrams show the most common configurations for your system.
Stereo Four Channel Operation
KX amplifiers are capable of operating into a minimum impedence of 2 ohms per channel in stereo operation.
GROUND
REMOTE
TURN-ON
18" or less
+12V |
FUSE |
BATTERY
- |
+ |
- |
+ |
R- |
|
|
R+ |
|
|
L- |
|
|
L+ |
SIGNAL IN |
AMP 2 |
|
||
R- |
SIGNAL IN |
AMP 1 |
|
|
|
R+ |
|
|
L- |
|
|
L+ |
|
|
+ |
- |
+ |
- |
+ 
-
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