Kicker KX600.4, KX800.4, KX300.4 Owner's Manual

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 trou­ble-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
KICKER Dealer.

purchased from and installed by

an Authorized

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

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.

REMOVE

2

Wiring Instructions

A

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 +

MP 1

LEFT +

LEFT -

RIGHT -

RIGHT +

SOURCE UNIT

AMP 2

HI-LEVEL INPUT

L R L R

Amp 1 Amp 2

+ - - + + - - +

L+ L - R + R - L+ L - R + R -

A

BRIDGE BRIDGE

MP

1

Amp 1 Amp 2

REMOTE BASS

OFF

AMP 1 AMP 2

SS

PA

PASS

HI

LO PASS

OFF

HI PASS

LO

WARNING-Use Only
High Or Low Level

Amp 2

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

A

When using both sets of High Level inputs, RCA dummy plugs must be insert-

ed 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 +

MP 1

LEFT ­ RIGHT -

RIGHT +

LEFT +

LEFT -

RIGHT -

RIGHT +

AMP 2

L+ L - R + R - L+ L - R + R -

Speaker
Outputs

HI-LEVEL INPUT

L R L R

Amp 1 Amp 2

+ - - + + - - +

Amp 1 Amp 2

A

MP

1

BRIDGE BRIDGE

RCA Dummy Plugs

ASS

P

OFF

HI

LO

AMP 1 AMP 2

Amp 2

SOURCE UNIT

SS

PA

P

OFF

HI

ASS

LO PASS

System Diagrams

The following diagrams show the most common configurations for your sys-

tem.

Stereo Four Channel Operation

KX amplifiers are capable of operating into a minimum impedence of 2 ohms

per channel in stereo operation.

+

REMOTE

TURN-ON

+12V

BATTERY

GROUND

18"

or less

FUSE

-

R­R+
L­L+

R­R+
L­L+

+

SIGNAL IN AMP 2

SIGNAL IN AMP 1

-

-

+

-

+

+

-

4