KICKER KX300.4 - Car radio

KX300.4 - Car radio KICKER - Free user manual and instructions

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Product Type4-Channel Car Amplifier
BrandKicker
ModelKX300.4
Dimensions (L x W x H)13.5 in x 8.0 in x 2.0 in
Weight6.0 lbs
Power Output (RMS per Channel)75W x 4 @ 4 ohms; 100W x 4 @ 2 ohms
Total RMS Power300W @ 4 ohms; 400W @ 2 ohms
Bridged Power (RMS)200W x 2 @ 4 ohms
Frequency Response20 Hz - 20 kHz
Signal-to-Noise Ratio>95 dB
Amplifier ClassClass D
Input Sensitivity0.2V - 5V
Fuse Rating30A x 2 (AGU type)
CoolingConvection with heat sink
Protection CircuitsThermal, over-current, short circuit, DC offset
Recommended Impedance2 ohms minimum per channel; 4 ohms bridged
Crossover TypeVariable high-pass/low-pass/band-pass with selectable filters
Bass Boost0-12 dB @ 40 Hz
Remote Level ControlIncluded (wired remote)
Installation Accessories IncludedMounting screws, power and ground wire, remote cable, fuses
Warranty1 year parts and labor

Frequently Asked Questions - KX300.4 KICKER

What is the RMS power output of the Kicker KX300.4?
The KX300.4 delivers 75W RMS x 4 at 4 ohms, 100W RMS x 4 at 2 ohms, and 200W RMS x 2 in bridged mode at 4 ohms.
Can I bridge channels on the KX300.4?
Yes, you can bridge two channels to drive a single subwoofer. Bridged mode produces 200W RMS into a 4-ohm load.
What size fuse does the KX300.4 require?
The amplifier uses two 30A AGU fuses (60A total). Always replace with the same type and rating.
How do I set the input sensitivity (gain) on the KX300.4?
With the head unit at maximum volume (without distortion), adjust the gain control on the amplifier until you hear mild distortion, then turn back slightly. Use a digital multimeter for precise matching.
Does the KX300.4 include a remote bass boost knob?
Yes, a wired remote level control is included for adjusting bass boost (0-12 dB @ 40 Hz) and overall volume from the driver's seat.
What is the minimum impedance I can run per channel?
The amplifier is stable down to 2 ohms per channel in stereo mode, and 4 ohms in bridged mode (2 ohms per pair when bridged is not recommended).
Is the KX300.4 compatible with 2-ohm subwoofers?
Yes, you can run a 2-ohm subwoofer on a single channel, but for best power use bridged mode with a 4-ohm subwoofer to get 200W RMS.
How do I install the KX300.4 in my car?
Mount the amplifier on a flat, solid surface (e.g., trunk floor or seat back). Connect power wire (4 AWG recommended), ground wire (to bare metal), and remote turn-on. Use RCA cables from the head unit to the amplifier inputs. Configure crossover settings based on your speakers.
What type of crossover does the KX300.4 have?
It features variable high-pass, low-pass, and band-pass filters with selectable crossover steepness. You can set the crossover frequency from 50 Hz to 250 Hz depending on your speakers.
What is the warranty coverage for the KX300.4?
Kicker offers a 1-year parts and labor warranty against manufacturing defects. You must register your product or keep the original receipt for claims.

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Download the instructions for your Car radio in PDF format for free! Find your manual KX300.4 - KICKER and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. KX300.4 by KICKER.

USER MANUAL KX300.4 KICKER

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 50-200 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 KICKER 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.

KIKICKER

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 SPEAKER OUTPUTS SOURCE UNIT RCA Outputs WARNING-Use Only High Or Low Level NOT...Both!!! L+ L - R + R- AMP1 REMOTE BASS L+ L - R + R- AMP 2

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

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!

AMP 1 LEFT + LEFT - RIGHT - RIGHT + LEFT + LEFT - RIGHT - RIGHT + AMP 2 Speaker Outputs SOURCE UNIT L+ L- R+ R- AMP 1 AMP 2 L+ L- R+ R- REMOTE BAGS AMP 2 AMP 1 AMP 2 77.88x10 13.64x10 25.94x10 10V 10V 10V 10V 10V 10V 10V 10V 10V

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 impedance of 2 ohms per channel in stereo operation.

GROUND REMOTE TURN-ON +12V BATTERY FUSE KIKICKER R- R+ L- L+ R- R+ L- L+ SIGNAL IN AMP 2 SIGNAL IN AMP 1 + - + - -

KX amplifiers are capable of operating into a minimum impedance of 4 ohms in Bridged operation.

GROUND REMOTE TURN-ON +12V BATTERY FUSE 18" or less KIKICKER R- R+ L- L+ R- R+ L- L+ SIGNAL IN AMP 2 SIGNAL IN AMP 1 +

Stereo And Bridged

KX amplifiers are capable of operating into a minimum impedance of 2 ohms stereo and 4 ohms bridged operation.

GROUND REMOTE TURN-ON +12V BATTERY FUSE KIKICKER R- R+ L- L+ R- R+ L- L+ - + SIGNAL IN AMP 2 SIGNAL IN AMP 1 + - + -

Adjusting Amplifier Controls

On your Kicker amplifier there are six rotary controls on top and two switches on the end panel. These controls ensure the reliability and performance of the amplifier, so they need to be set correctly.

CROSSOVER SWITCHES

NEVER CHANGE THE CROSSOVER SWITCH SETTING WITH THE SYSTEM ON!

The switches located on the end panel next to the RCA jacks are for setting the internal crossover. In the OFF position the amplifier passes a full range signal to the speakers. Use the LO positon when connected to a subwoofer. The HI positon should be selected when connected to any speakers which you do not want to receive sub-bass information.

BEFORE TURNING ON THE SYSTEM FOR THE FIRST TIME, MAKE SURE THAT THE SIX ROTARY CONTROLS ON TOP OF THE AMPLIFIER ARE TURNED FULLY COUNTER-CLOCKWISE!

GAIN CONTROLS

Remember, the 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. (eg. If the head unit goes to 30, turn it to 25.) Next, turn (clockwise) the gain on the amplifier up slowly until you can hear audible distortion, then turn it down just a little. Adjust AMP 1 first, then proceed to AMP 2.

Crossover Control

Where you set the crossover is very subjective and can be fine tuned to match your listening preference or speaker requirements.

Bass Boost

The BASS BOOST control is designed to give you increased output 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.

CKER AUP 2 GOLD BOOST INT AUP 3 CAN AUP 2 GOLD FRC AUP 1 GOLD FRC AUP 1 CAN AUP 2 GOLD FRC AUP 1 CAN 50° 200°

Amp 2 Bass Boost

0-18 dB @ 40 Hz

Amp 2 Input Gain

Low Level High Level

170mV - 5V & 340mV - 10V

Amp 2 Crossover

50 Hz - 200 Hz 12 dB/Oct

Amp 1 Bass Boost

0-18 dB @ 40 Hz

Amp 1 Input Gain

Low Level High Level

170mV - 5V & 340mV - 10V

Amp 1 Crossover

50 Hz - 200 Hz 12 dB/Oct

Remote

Remote Bass Level Control

When using AMP 2 as a subwoofer amplifier you have the ability to control the level of the subs from the driver's seat. To mount the controller simply screw the metal bracket to the chosen location, then slide the housing onto the bracket

until it snaps into place. Run the cable from the controller to the appropriate jack on the amplifier chassis.

Mounting Surface

REMOTE BASS LEVEL CONTROL KX300.4 NOT INCLUDED PHONE CABLE MICKER HOLD CAPS L+ L R R- AV1 1 AV2 2 L+ L- R+ R- AV3 3 AV4 4 AV5 5 AV6 6 AV7 7 AV8 8 AV9 9 AV10 10 AV11 11 AV12 12 AV13 13 AV14 14 AV15 15 AV16 16 AV17 17 AV18 18 AV19 19 AV20 20 AV21 21 AV22 22 AV23 23 AV24 24 AV25 25 AV26 26 AV27 27 AV28 28 AV29 29 AV30 30 AV31 31 AV32 32 AV33 33 AV34 34 AV35 35 AV36 36 AV37 37 AV38 38 AV39 39 AV40 40 AV41 41 AV42 42 AV43 43 AV44 44 AV45 45 AV46 46 AV47 47 AV48 48 AV49 49 AV50 50 AV51 51 AV52 52 AV53 53 AV54 54 AV55 55 AV56 56 AV57 57 AV58 58 AV59 59 AV60 60 AV61 61 AV62 62 AV63 63 AV64 64 AV65 65 AV66 66 AV67 67 AV68 68 AV69 69 AV70 70 AV71 71 AV72 72 AV73 73 AV74 74 AV75 75 AV76 76 AV77 77 AV78 78 AV79 79 AV80 80

Specifications

Model KX300.4 KX600.4 KX800.4

RMS Power

In Watts, All Channels Driven

@ 13.8V, 4Ω Stereo, 0.085% THD 38 x 475 x 4100 x 4
@ 13.8, 2Ω Stereo, 0.2% THD 75 x 4150 x 4200 x 4
@ 13.8, 4Ω Mono, 0.4% THD 150 x 2300 x 2400 x 2

Dynamic Power

In Watts, All Channels Driven

@ 14.4V, 4Ω Stereo 60 x 4120 x 4175 x 4
@ 14.4V, 2Ω Stereo 75 x 4150 x 4215 x 4
@ 14.4V, 4Ω Mono 150 x 2300 x 2430 x 2
Length with Shroud16" (40.64cm)22 1/2" (57.15cm)25 3/4" (65.40cm)

Specifications common to all models

Height:2.5 inches / 6.35 centimeters
Width:10.125 inches / 25.7 centimeters
Length Without Shroud:Subtract 5" / 12.7cm from chart above
Frequency Response:20 Hz - 20 KHz, + 0, -1dB
Input Sensitivity:170 mV - 5 V low level, 340 mV - 10 V high level
Signal-to-Noise Ratio:>95 dB, a-weighted, re: rated power
Electronic Crossover:Variable high or low pass, 50 - 200 Hz, 12 dB/octave
KickBass Boost:Variable 0 to +18 dB boost @ 40 Hz

Troubleshooting

If your amplifier does not appear to be working, check obvious things first such as blown fuses, poor or incorrect wiring connections, crossover and gain controls set incorrectly, etc.

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.

The power indicator on top of the amplifier which illuminates the model badge follows the same function as the green LED.

○ 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).

→Ground terminal.

○ Green LED on, no output:

→Check RCA connections.

→Test speaker outputs with known good speaker.

→Substitute known good source unit.

→Check for signal on RCA cable with VOM meter in AC position.

- Red LED on, no output:

1.) Amp is very hot.

⇒Thermal protection is engaged. Check for proper impedance at speaker terminals. Also check for adequate airflow around amplifier.

2.) Amp shuts down only while vehicle is running.

→Voltage protection is engaged. Voltage to the amplifier is not within the 9-16 volt operating range. Have automobile charging/electrical system inspected.

3.) Amp will only play at low volume levels.

→Short circuit protection is engaged. Check for speaker wires shorted to each other or the vehicle chassis. Damaged speakers or operating below minimum impedance will also cause this.

○ No output from one channel:

→Check balance control on head unit.

→Check RCA & speaker connections for that channel.

→Swap RCA connections from left to right.

If problem changes sides then you have a bad RCA cable or source unit problem.

→Swap speaker connections from left to right.

If problem changes sides then you have a bad speaker cable or bad speaker.

○ Alternator noise (whining sound that varies with engine RPM):

→Check for damaged RCA cable.
→Check routing of RCA cable.
→Check source unit for good ground.
⇒Check gain setting, turn down if 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 for proper positive and negative connections. reverse connections 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 failure in other systems in the vehicle.

If you have more questions about the installation and operation of your new KICKERamplifier, see the Authorized KICKERDealer in your area. You may also call our Technical Services Line at (405)624-8583 for assistance or visit our website at www.KICKER.com.

Notes

ELECTRONICS LIMITED WARRANTY

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. When purchased from and installed by an Authorized KICKER Dealer it is warranted for TWO (2) YEARS from date of original purchase, or ONE (1) YEAR from date of original purchase if purchased from but not installed by an Authorized KICKER Dealer. If the product is labeled "B Stock" and purchased from an Authorized KICKER Dealer, it is warranted for ONE (1) YEAR from date of purchase, regardless of place of installation. Should service be necessary under this warranty for any reason due to manufacturing defect or malfunction during the warranty period, Kicker will replace or repair (at its discretion) the defective merchandise with equivalent merchandise at no charge. Warranty replacements on "B-Stock" merchandise may have cosmetic scratches and blemishes. Discontinued products may be replaced with more current equivalent products.

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.

WHAT TO DO IF YOU NEED WARRANTY OR SERVICE

Defective merchandise must be returned to your local Authorized Stillwater Designs (Kicker) Dealer for warranty. Assistance in locating an Authorized Dealer can be obtained by writing or calling Stillwater Designs direct. You can confirm that a dealer is authorized by asking to see a current authorized dealer window decal.

If it becomes necessary for you to return defective merchandise, 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

Stillwater Designs, 5021 North Perkins Road, Stillwater, OK 74075

The RMA number must be clearly marked on the outside of the package. Return only defective components. Return of entire cabinets, system packs, pairs, etc. increases your return freight charges. Non-defective items received will be returned freight collect.

Include a dated proof-of-purchase stating the Customer name, Dealer name, product purchased and date of purchase. 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 received freight collect will be refused.

Failure to follow these steps may void your warranty. Any questions can be directed to the Kicker Customer Service Department at (405)624-8510.

WHAT IS NOT COVERED?

This warranty is valid only if the product is used for the purpose for which it was designed. It does not cover:

  • 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
    • The cost of shipping product to Kicker
    • Service performed by anyone other than Kicker
  • Speaker with any foreign caulk used for gasket material

HOW LONG WILL IT TAKE?

Kicker strives to maintain a goal of 24-hour service for all returns. Delays may be incurred if lack of replacement inventory or parts is encountered.

INTERNATIONAL WARRANTY

Contact your International Kicker dealer or distributor concerning specific procedures for your country's warranty policies.

KICKER KX300.4 - INTERNATIONAL WARRANTY - 1

P.O. Box 459 • Stillwater, Oklahoma 74076 • U.S.A. • 405 624-8510

STILLWATER

Design ^®

WARNING:

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 is always an indicator that the sound level is too loud and may permanently damage your hearing. Please use common sense when controlling volume!

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Product information

Brand : KICKER

Model : KX300.4

Category : Car radio